Mitsubishi P91DW(UB) Specifications

www.amershambiosciences.com
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CE Conformity
The following Gel Imaging Digital Systems,
Models: ImageQuant-100, ImageQuant-300, ImageQuant-400, ImageQuant-ECL
Are in conformity with the provisions of the following EC Directives, including all amendments,
and national legislation implementing these directives:
Low Voltage Directive 73/23/EEC
EMC Directive 89/336/EEC
And that the following harmonized standards have been applied:
EN61010-1: 2001
EN61326-1: 1997+A1:1998+A2:2001 Class A
EN55011 Class A, EN61000-3-2, EN61000-3-3, EN61000-4-2,
EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, EN61000-4-11
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and contractual approval, if required, to make changes in specifications and features shown
herein, or discontinue the product described at any time without notice or obligation. Contact your
local GE Healthcare representative for the most current information.
GE and GE Monogram are trademarks of General Electric Company. ECL, ImageQuant,
Amersham and Amersham Biosciences are trademarks of GE Healthcare Limited © 2006,
General Electric Company – All rights reserved
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trademarks of Invitrogen. Windows is a trademark of Microsoft Corporation. Macintosh and
ResEdit are trademarks of Apple Computer, Inc. ChromaLight is a trademark of Alpha Innotech
Corporation.
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Table of Contents
Chapter 1: Introduction and Setup ............................................................................................. 1
1.1 ImageQuant Capture Imaging System........................................................................ 1
1.1.1 Mouse Functions................................................................................................ 2
1.1.2 About This Manual ............................................................................................ 2
1.1.3 Starting ImageQuant Capture ............................................................................ 2
1.2 ImageQuant Imaging System Setup ........................................................................... 3
1.2.1 System Components........................................................................................... 3
1.2.2 System Placement .............................................................................................. 3
1.2.3 Cable Connections ............................................................................................. 3
1.3 Computer, Camera and Peripheral Installation .......................................................... 4
1.3.1 Setting up the Power Strip/Surge Protector ....................................................... 4
1.3.2 Setting up the Computer, Monitor, Mouse and Keyboard (optional) ................ 5
1.3.3 Software Driver Installation Instructions........................................................... 6
1.3.4 Camera Installation .......................................................................................... 10
1.3.5 Connecting the Printer (optional)..................................................................... 11
1.3.6 Cabinet Assembly (optional) ........................................................................... 12
1.3.7 Connecting the Cabinet (optional) ................................................................... 16
1.3.8 Starting ImageQuant Capture .......................................................................... 16
1.4 ImageQuant System Quick Guide ............................................................................ 17
1.4.1 Cabinet Controls (for optional cabinet) ........................................................... 19
1.5 System Information .................................................................................................. 20
1.6 Acquiring an Image .................................................................................................. 21
1.6.1 Focusing on an Image ...................................................................................... 22
1.6.2 Control of the Optional Motorized Zoom Optics ............................................ 23
1.6.3 Auto Exposure and Auto Exposure Setup ....................................................... 24
1.6.4 Cabinet Controls - Activating the Light Source and Selecting a Filter ........... 26
1.6.5 Use Preview to Set Exposure Time ................................................................. 27
1.6.6 Optimizing the Gray Scale for Saturation and Contrast Displays ................... 28
1.6.7 Acquire and Transfer the Image ...................................................................... 29
1.6.8 Capturing Images Using the FrameGrabber Mode.......................................... 30
1.6.9 Saving an Individual Image from a Sequence ................................................. 32
1.6.10 Loading/Saving an Entire Sequence .............................................................. 32
1.6.11 FrameGrabber: Save/Load FrameGrabber Setup Routines .......................... 33
1.6.12 Frame Stacking .............................................................................................. 33
1.6.13 Capturing a Color Image Using the FrameGrabber Function........................ 34
Chapter 2: Getting Started - Basic Imaging Functions........................................................... 35
2.1 Contrast Adjustment................................................................................................. 35
2.1.1 Using the Contrast Adjustment Tools for Grayscale Images........................... 36
2.1.2 Black Level Adjustment .................................................................................. 36
2.1.3 White Level Adjustment .................................................................................. 37
2.1.4 Gamma Setting Adjustment............................................................................. 37
2.1.5 The Auto Contrast Selection............................................................................ 38
2.1.6 The Reverse Button.......................................................................................... 39
2.1.7 The Grid Button ............................................................................................... 40
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2.1.8 Making Linear, Log, or Equal Adjustments .................................................... 41
2.1.9 Using the Contrast Adjustment Tools for Color Images ................................. 42
2.2 Tool Bar.................................................................................................................... 43
2.3 Tool Box................................................................................................................... 46
2.4 Status Bar.................................................................................................................. 46
Chapter 3: Pull-Down Menus .................................................................................................... 47
3.1 The File Menu .......................................................................................................... 47
3.1.1 File|Open.......................................................................................................... 48
3.1.2 File|Overlay...................................................................................................... 49
3.1.3 File|Close ......................................................................................................... 49
3.1.4 File|Save and Save As...................................................................................... 50
3.1.5 Printer Setup..................................................................................................... 52
3.1.6 Print.................................................................................................................. 53
3.1.7 Logoff .............................................................................................................. 53
3.1.8 The Exit Function ............................................................................................ 53
3.2 The Edit Menu.......................................................................................................... 54
3.2.1 Reset and Clear ................................................................................................ 55
3.3 The Image Menu....................................................................................................... 56
3.3.1 Equalize............................................................................................................ 56
3.3.2 Arithmetic ........................................................................................................ 56
3.3.3 Conversion ....................................................................................................... 57
3.3.4 Flat Field Calibrate .......................................................................................... 58
3.3.5 Image Resize.................................................................................................... 59
3.3.6 Image Info........................................................................................................ 59
3.4 The Setup Menu ....................................................................................................... 60
3.4.1 Default Parameters........................................................................................... 60
3.4.2 Save Defaults ................................................................................................... 61
3.4.3 Load Defaults................................................................................................... 61
3.4.4 Security ............................................................................................................ 62
3.4.5 Print Info .......................................................................................................... 62
3.4.6 Print Mode ....................................................................................................... 63
3.4.7 Print Date ......................................................................................................... 63
3.4.8 Preferences....................................................................................................... 63
3.5 The Overlay Menu.................................................................................................... 66
3.5.1 Saving an Overlay............................................................................................ 66
3.5.2 Loading an Overlay.......................................................................................... 67
3.6 The Utilities Menu.................................................................................................... 68
3.6.1 Explorer............................................................................................................ 68
3.6.2 Notepad ............................................................................................................ 68
3.7 The View Menu........................................................................................................ 69
3.7.1 Zoom Functions ............................................................................................... 70
3.7.2 Show Annotations............................................................................................ 70
3.8 The Help Menu......................................................................................................... 71
3.8.1 On-Line Note ................................................................................................... 71
3.8.2 About................................................................................................................ 71
Chapter 4: The Tool Box............................................................................................................ 72
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4.1 The Zoom Tool......................................................................................................... 72
4.2 The Rotate / Flip Tool .............................................................................................. 73
4.3 Histogram ................................................................................................................. 74
4.4 Automatic Enhancement .......................................................................................... 76
4.5 Annotations............................................................................................................... 77
4.5.1 Object Attributes.............................................................................................. 77
4.5.2 Annotation Colors............................................................................................ 77
4.5.3 Line Thickness ................................................................................................. 78
4.5.4 Line Types ....................................................................................................... 78
4.5.5 Arrows and Straight Lines ............................................................................... 78
4.5.6 Text Background and Font............................................................................... 79
4.5.7 Text Angles...................................................................................................... 80
4.5.8 The Drawing Tools .......................................................................................... 80
4.5.9 The Editing Tools ............................................................................................ 82
4.6 False Color................................................................................................................ 84
4.6.1 Gray Scale (Palette 0) ...................................................................................... 84
4.6.2 Saturation (Palette 1)........................................................................................ 84
4.6.3 Palettes 2 through 11........................................................................................ 85
4.7 Image Filters............................................................................................................. 86
4.7.1 General Information on How Filters Work...................................................... 87
4.7.2 Sharpening Filters ............................................................................................ 88
4.7.3 Noise Filters ..................................................................................................... 88
4.7.4 Despeckle Filters.............................................................................................. 88
4.7.5 3-D (Contour) Filters ....................................................................................... 88
4.7.6 Smoothing Filters............................................................................................. 89
4.7.7 Edge Filters ...................................................................................................... 89
4.7.8 Horizontal Edge Filter...................................................................................... 89
4.7.9 Vertical Edge Filter.......................................................................................... 90
4.7.10 Custom Filter ................................................................................................. 90
4.7.11 The UNDO Button......................................................................................... 90
4.7.12 Examples of Filter Results ............................................................................. 91
4.8 FrameGrabber........................................................................................................... 92
4.8.1 Saving an Individual Image from a Sequence ................................................. 94
4.8.2 Loading/Saving an Entire Sequence ................................................................ 94
4.9 FrameGrabber: Save/Load FrameGrabber Setup Routines..................................... 95
4.9.1 Frame Stacking ................................................................................................ 95
4.9.2 Capturing a Color Image Using the FrameGrabber Function.......................... 96
Chapter 5: Analyzing Images .................................................................................................... 97
Appendix A: Opening ImageQuant Capture Files in Other Software Programs ................ 98
Appendix B: Security Features................................................................................................ 100
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ImageQuant 300 Capture User Manual
Chapter 1: Introduction and Setup
1.1 ImageQuant Capture Imaging System
The ImageQuant Imaging System is a powerful digital imaging system, ideal for instant
photography of a wide variety of samples. The CCD camera allows imaging of low-light
samples in UV-illuminated, and fluorescent applications.
The instrument is controlled by ImageQuant™ Capture software, which is designed with
ease-of-use in mind. ImageQuant Capture handles image acquisition and archiving, and
can be used to prepare images for desktop publishing.
ImageQuant Capture includes tools to optimize the image display by adjusting contrast
automatically or manually. Hard-to-see portions of the image can be clarified by
converting the image from positive to negative, using digital filters, or applying a false
color map. Notes, labels, arrows, lines and other drawing tools can be recorded directly
on the image using the annotation functions available in ImageQuant Capture.
Annotations are superimposed on the image when a hard copy is printed and can either be
saved as a template file or as part of the image. All of these features are accessible via
convenient on-screen buttons and menus controlled by the mouse.
ImageQuant Capture can also be used to transfer an acquired image to one of the
ImageQuant TL modules for detailed analysis.
The ImageQuant System is a complete package, including all the hardware and software
needed for image capture, enhancement and analysis. The system's computer need not be
solely dedicated to ImageQuant Capture and can also be used to run other software such
as word processing programs, spreadsheets, and desktop publishing software.
Images can be printed using a 256-level gray scale thermal printer or any printer with a
Windows® driver. The low-cost, high-quality prints are ideal for record keeping in lab
notebooks or for publication.
Images can be archived to the system’s hard disk, floppy disk, Zip or optional Jazz drive,
or to a network drive if applicable.
In section 1.4, there is a condensed instruction sheet, which will be useful if you are
familiar with the program but need to quickly refresh your memory. We suggest you
photocopy the appropriate instruction sheet(s) and post them near the instrument for easy
reference.
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ImageQuant 300 Capture User Manual
1.1.1 Mouse Functions
The mouse supplied with the ImageQuant System has two buttons. The left button is used
to activate functions and otherwise make selections when using the software. In some
cases, the right mouse button is used to recall or reactivate the function that was most
recently assigned to the left button.
1.1.2 About This Manual
Throughout this manual, different fonts are used to indicate certain things:
This font indicates the name of a button, a menu, or a function found in a menu.
This font indicates an entry that is typed
Letters of words found between < > refer to keys on the keyboard.
NOTE:
Notes will be used throughout the manual to inform on interesting points and
provide useful hints.
CAUTION:
Cautions will be used to inform the reader of action that may have the potential to
either harm the instrumentation or affect the quality of the data.
WARNING:
Warnings are used to provide special notice of actions that have the potential to
cause harm to the operator.
1.1.3 Starting ImageQuant Capture
To start ImageQuant Capture from Windows, double-click the ImageQuant Capture icon
on the windows desktop.
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ImageQuant 300 Capture User Manual
1.2 ImageQuant Imaging System Setup
1.2.1 System Components
The ImageQuant 300 System includes:
• High-performance CCD camera
• Zoom lens, close-up 2+ diopter lens, and interference filter
• (optional) Computer with keyboard, mouse, and monitor
• (optional) Windows operating system (preinstalled)
• ImageQuant image processing and analysis software
• (optional) ImageQuant light cabinet with UV transilluminator and white light
fold-down transilluminator
• (optional) wide-angle fast lens
• (optional) epi-illuminating UV lights
• (optional) printer
Check the packing list included with the system to verify that all components have been
received.
1.2.2 System Placement
As with all electrical instruments, the ImageQuant System should be located away from
water, solvents, or corrosive materials, on a table or bench top that is dry and stable.
Further, the system should be placed away from interfering electrical signals and
magnetic fields. If possible, a dedicated electrical outlet should be used to eliminate
electrical interference from other instrumentation in your laboratory.
1.2.3 Cable Connections
The cable ends and the ports into which they are inserted are keyed or unique for each
connection to eliminate confusion. The connections are pictured and described in the
next few sections.
WARNING
Make sure the power is OFF and all power cords are disconnected while connecting
the cables and setting up the instrument.
The ImageQuant light cabinet weighs 37kg (81.4 lbs.). It is recommended that two
people lift the cabinet from the shipping container to the desired location in the
laboratory.
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ImageQuant 300 Capture User Manual
1.3 Computer, Camera and Peripheral Installation
All software, peripheral drivers and operating systems have been pre-installed at the
factory. During the system installation all components should only need to be plugged
into the correct ports
1.3.1 Setting up the Power Strip/Surge Protector
Turn the power switch on the power strip/surge protector off. Plug the power strip/surge
protector into a wall outlet (preferably a dedicated circuit) and then turn the power on.
CAUTION: Do not plug the light cabinet into the same power strip as the PC. Use a
separate circuit if possible. The cabinet needs to be turned on after the operating
system has been completely loaded in order for the software to function optimally.
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ImageQuant 300 Capture User Manual
1.3.2 Setting up the Computer, Monitor, Mouse and Keyboard
(optional)
The computer will need to have the
monitor, mouse and keyboard connected
to it in the correct ports (see the
descriptions below). Also, a 3 prong
standard power cable should be plugged
into the back of the computer and the
power strip.
Keyboard/Mouse
connections (color
coded purple and
green
COM1 port for DE500 Light Cabinet
Connect the monitor’s video cable to the
monitor port on the back of the computer.
If after-market video cards were
preinstalled into your computer system
connect the monitor’s video cable to the
video card connector. Connect the
monitor’s power cable to the power strip.
LPT1 port
for parallel
port printers
The mouse and keyboard connectors are
color-coded and icon identified. Attach
the mouse and keyboard cables to the
connectors on the back of the computer
by matching the colors.
Monitor Port
The computer is now ready to be turned
on. Turn the computer on by pushing the
power button on the front of the unit.
USB ports
for printers
and other
devices
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ImageQuant 300 Capture User Manual
1.3.3 Software Driver Installation Instructions
This set of instructions only applies if you did not purchase an integrated system and
need to install the firewire card (If the computer contains a pre-installed firewire card or
an on-board firewire port, please skip to step #4).
1. Install the firewire card into an available PCI slot on the motherboard of the PC.
2. Boot up the computer.
3. The firewire card should automatically be detected by the Windows operating system.
If not refer to the firewire card instruction manual and/or the computer operating
manual instructions.
4. Install ImageQuant 300 Capture software by placing the installation CD into the
CD ROM on the computer. The CD should automatically begin the installation
routine. If the computer does not detect the CD, use Windows Explorer to access the
contents of the CD and manually run the file ImageQuant300.exe.
5. Follow the default software installation instructions.
6. After the computer has rebooted, right-click on My Computer and select Properties:
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ImageQuant 300 Capture User Manual
7. Open Device Manager and find the exclamation mark under Imaging Devices. Rightclick on Generic 1394 Desktop and select Update Driver:
8. Select No, not this time when you are asked if you want to connect to Windows
Update to search for a driver:
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ImageQuant 300 Capture User Manual
9. Select Install from a list or specific location (Advanced):
10. Select AlphaImager Camera:
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ImageQuant 300 Capture User Manual
11. Select Continue Anyway if a digital signature message appears.
12. After the driver installation is complete, the error message should be resolved in the
device manager.
13. Exit out of the device manager.
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ImageQuant 300 Capture User Manual
1.3.4 Camera Installation
The ImageQuant camera connects via a standard IEEE 1394 firewire connection. If the
system was shipped with a computer, the firewire card will be pre-installed. If the system
was not shipped with a computer it will be necessary to install the firewire card first
before installing the camera and software (see next section for driver installation
instructions).
1. Locate the ImageQuant firewire camera cable:
2. Connect the firewire cable to back of the computer in any of the open firewire ports.
Firewire ports:
2 empty
1 with camera cable
connected
Firewire ports located on the back of the computer
3. Connect the firewire cable to the side of the camera.
Camera
connector
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ImageQuant 300 Capture User Manual
1.3.5 Connecting the Printer (optional)
The Mitsubishi P91DW (UB) printer connections are color coded for convenience. Plug
the USB cable into the back of the printer and into the proper USB connector on the back
of the computer. Plug in the standard 3 prong power cable to the back of the printer and
to the power strip, then turn the power on.
Note: The Mitsubishi P91DW (UB) printer may be connected to any USB port on
the computer; however, the driver may need to be manually reinstalled.
The Mitsubishi CP700 and CP770 printers connect via the on-board parallel (LPT1) port.
Plug in the standard 3 prong power cable on the back of the printer and into the power
strip, then turn the power on. Set the printer up for color or black and white printing
following the directions in the owners’ manual supplied with the printer.
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ImageQuant 300 Capture User Manual
1.3.6 Cabinet Assembly (optional)
When you remove the light cabinet from its shipping carton, it is already partially
assembled. The camera mounting assembly is packed separately in the same container.
The UV transilluminator and cabinet top are both packed in separate boxes. Make sure
you have received all the hardware before discarding the shipping carton. Start by placing
the cabinet on a level flat surface, in a position where you can easily reach the top, front
and back.
Attaching the Camera to the Cabinet
Take the following steps to attach the camera to the cabinet:
1. Remove the camera and lens from the packaging and attach the lens to the
camera.
2. Place the stand in a vertical position. Place the metallic washer seal over the hole
on the base of the stand.
3. Attach the cable to the camera.
4. Attach the camera to the post using the fastening knob. Lower the camera until it
is firmly seated in the washer seal at the base of the stand. The lens should poke
slightly through the hole at the base of the camera stand.
5. Place the foam rubber camera stand gasket in the cabinet over the location where
the camera stand will be placed.
6. Carefully lower the camera stand through the top of the cabinet, placing it over
the gasket and positioning the lens directly above the hole that leads to the filter
wheel.
7. Fasten the camera post to the top shelf of the cabinet using the screws that are
provided.
Camera stand, camera,
fastening knob and washer
seal.
Place washer seal on camera
stand
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Use fastener knob to attach camera
to stand, base of camera should
rest within washer seal.
ImageQuant 300 Capture User Manual
Installing the UV Transilluminator
Take the following steps to install the UV transilluminator (this is a box-shaped UV
lighting apparatus that rests at the bottom of the cabinet):
1. At the bottom of the cabinet, there is an extendable metal tray that is held in place
by a single screw (this is to prevent the tray from being damaged during
shipping). Start by removing this screw and then pulling the tray out so that it is
fully extended.
2. With the tray fully extended, re-insert the locking screw in its original position
underneath the slide-out tray (This ensures that you will have the screw if you
ever have to ship the unit and also prevent light coming through the threaded hole
that seats the screw.)
3. Note that the extended tray has four holes, which match the rubber legs on the
transilluminator. Place the transilluminator on the tray so that its legs are firmly
seated in these holes.
4. Plug the power cord at the bottom of the cabinet into the socket at the back of the
UV transilluminator.
5. Push the tray back into the cabinet.
Close-up of the slide-out tray
at the bottom of the cabinet.
Note that there is a screw that
holds the tray in place for
shipping. Remove this screw
to allow the tray to slide freely.
Once the tray is extended,
replace the locking screw in its
original position underneath
the slide-out tray. This will
prevent light from entering into
the cabinet through the
threaded hole.
13
Place the UV transilluminator
on the tray (making sure that
its rubber “feet” are firmly
seated in the holes on the
tray) and then plug the
cabinet’s power cord into the
back of the transilluminator.
ImageQuant 300 Capture User Manual
Unfastening the Fold-Down White Light Tray
The cabinet contains a fold-down light tray that is locked for shipping (see illustration
below). Take the following steps to unfasten the light tray:
1. The light tray is held in place by a detachable knob that screws into place just
above the light tray. Unscrew the knob until it is separated from the cabinet
and the tray can move freely.
2. Note the bottom of the tray has a threaded hole. Insert the knob into this hole
and turn it clockwise until it is firmly seated.
Close-up of the fold-down
white light tray located at the
back of the cabinet. This tray
is secured by a detachable
knob.
Release the white light tray by
unscrewing the knob, which
will allow the tray to swing
down freely.
14
Once the tray is released,
screw the knob back into the
threaded hole underneath the
light tray, where it will serve as
a handle.
ImageQuant 300 Capture User Manual
Attaching the Hood
Take the following steps to attach the cabinet hood and connect the hood fan:
1. Place the hood on top of the cabinet so the holes for screws are centered over the
corresponding holes in the top of the cabinet.
2. From within the cabinet, attach the hood fan’s power cord to the temperature board
socket on the top- right side of the cabinet.
3. Fasten the hood to the cabinet using M4x16 socket head screws.
The cabinet hood is
positioned over the top of the
cabinet
Once the hood is positioned over
the top of the cabinet, plug the
fan cable into the socket on the
top-right side of cabinet.
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Close-up of socket.
ImageQuant 300 Capture User Manual
1.3.7 Connecting the Cabinet (optional)
The cabinet connects to the back of the computer via an RS232 cable.
Connector on the
back of the cabinet
Connector on the back
of the computer
Ports on the back of the cabinet and computer respectively.
Power on the cabinet after the Windows operating system has fully loaded. The
ImageQuant Imaging System is now ready for use.
1.3.8 Starting ImageQuant Capture
To start ImageQuant Capture from Windows, double-click the ImageQuant icon on the
windows desktop.
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ImageQuant 300 Capture User Manual
1.4 ImageQuant System Quick Guide
Note: This is intended as a quick reference guide for acquisition. For more detailed
information on the individual features reference section 1.6 of this manual.
1. Power on the system:
a. Turn on the computer, monitor, and optional printer.
b. After the computer has booted up completely to the Windows
desktop, turn on the power to the cabinet (if applicable).
c. Start ImageQuant Capture by double clicking on the desktop
shortcut.
2. Positioning and Focusing on the Sample:
a. In the ‘Tool Bar’, select the ‘Acquire’ icon to activate the image
acquisition software features.
b. In the Image Acquisition window, select the
button.
c. Open the door to the cabinet and position your sample on the preferred
illumination source. Fluorescence samples that require epi or transillumination
of UV energy should be placed on the purple UV filter glass. For colorimetric
samples such as protein gels, film, or blots, use the fold-down the white light
table for your sample.
d. Open the aperture on the camera lens all the way open to the smallest number F1.2 - manually or via the software controls for motorized optics.
e. With the door still open to allow light to enter into the cabinet, use the monitor
real time readout display to position and focus your sample in the middle of the
image acquisition window.
f. Adjust the zoom setting manually or via the software controls so that the area of
interest on the sample takes up all of the image size on the screen.
3. Capturing a bright sample like fluorescently labeled gels, colorimetric samples and film:
a. Close the cabinet door.
b. Choose the appropriate optical filter for your sample type:
a. Position #1 for colorimetric gels and film (no filter)
b. Position #2 for ethidium bromide gels
c. Positions #3-5 for other fluorescently labeled gels (optional filters).
c. Turn on the illumination source (UV or white light) using the touch panel or
‘virtual’ software controls.
d. Select the
e. Select
f. Select
button.
(for details on how to adjust the auto expose settings refer
to section 1.6.3 of the manual)
g. Once the image in preview mode does not contain any saturation (red false color
palette for white bands, green for dark bands) select
. The exposure
bar will turn green when this is complete. If the exposure bar is pink in color,
saturation is still present in the image. For really bright images, particularly in
white light applications, it may be necessary to reduce the aperture setting until
the saturation is removed from the image.
4. Save the original image
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a. Click on the Save Image function in the FILE menu or click on the SAVE or
SAVE AS icon in the Tool Bar window.
b. Enter a file name and select the directory to which it should be saved (the
directory path should be less than 100 characters).
c. Specify the file format (TIF, BMP, PCX, MAC, color TGA)
d. Click OK to save the file
5. Enhance the display [optional]
a. Adjust the black, white and gamma levels by moving the slider bars at the right
of the image in the “Contrast Adjust” window, or select auto contrast.
b. Apply digital filters, found in the Tool Box under the FILTERS tab (to stop a
filter, hit any key on the keyboard; to reverse the effects of a filter, click UNDO).
c. Add text, boxes, arrows, etc. to the image using the annotation tools in the Tool
Box under the ENHANCEMENT and ANNOTATE tabs.
6. Print the image using the large PRINT button in the Tool Bar or the pull-down FILE
menu option
7. Analyze the sample by using the analysis options in the toolbar (1D, Array, Colony and
Toolbox). When one of these buttons is pressed, the image is transferred to the
appropriate ImageQuant TL module for analysis.
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1.4.1 Cabinet Controls (for optional cabinet)
Transillumination Controls
These two buttons are used to toggle the UV transilluminator and the
reflective white light table on and off.
Reflective Light Controls
These two buttons are used to toggle the reflective UV and white
light sources on and off.
UV Override Button
Normally, if UV light is being used the cabinet automatically shuts
off the UV light source when the cabinet is opened. This button can
be used to override this behavior (the button should be held down 57 seconds before opening the cabinet).
Filter Wheel Position
These controls are used to set the filter that will be utilized for
acquisition. Use the arrow buttons to cycle through the available
filter settings. The LED indicates the number of the filter that is
currently being used:
1
2
3-5
No filter – use for colorimetric gels and film.
Ethidium Bromide
Optional filters
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1.5 System Information
To display system information, select the About option in the Help menu. This button
accesses a pop-up box.
ABOUT Pop-Up Dialog
This box shows the instrument serial number (where appropriate) and the Software
version number. Use the information specific to your instrument and software when
calling for technical support, software upgrades, etc.
To close the dialog box, click on the OK button.
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1.6 Acquiring an Image
In the TOOL BAR window, click on the Camera Acquire icon:
Once the Camera Acquire Icon is pressed, the CAMERA SETUP AND REVIEW
window is activated to provide exposure control of the camera, sensitivity/resolution
controls, all lighting and filter wheel position controls, contrast display options and
cabinet door open/close indicator using a software ‘virtual control’ menu. Also,
FrameGrabber setup is controlled and activated from this window. This window will
open with the Setup control mode activated (left blue button), which provides a near real
time readout to allow for easy sample positioning and optics adjustments.
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1.6.1 Focusing on an Image
Focusing on an image with ImageQuant Capture is easy with the real time display.
Simply adjust the parameters on the manual lens, or, if the lens is controlled via the
software, click on the appropriate software control button.
1. To open the aperture, turn the lens's aperture ring counter-clockwise for more light.
Conversely, if the image is too bright, close the aperture by turning it clockwise until
an image is visible on the monitor.
2. Then, zoom in on the image so that the area of interest on the sample takes up the
entire field of view on the screen.
3. Last, if the image appears blurry, turn the focusing ring (lower ring on the lens) until
the sharpest image is obtained.
4. For motorized zoom lenses, use the software controls to perform steps 1-3 above.
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1.6.2 Control of the Optional Motorized Zoom Optics
ImageQuant Capture controls the motorized optics when present. The software allows
you to set the Aperture, Focus and Zoom (if applicable) from the software acquisition
window. To change a value for the aperture, focus or zoom control, use the up and down
arrows to control the settings.
Turning the Optional Motorized Zoom Lens Software Controls On/Off:
The Software controls for the Motorized Zoom Lens can be turned on and off in the
IQcapture.def file. This file is located in the application’s program directory. The
software controls should be configured depending on whether or not the optional
Motorized Zoom lens is purchased. For customers that add the Motorized Lens to their
system after the initial sale, it is necessary to turn the controls on in the field:
Additionally, the COM2 port is set by default to off, enabling customers to use the
COM2 port for other applications. To activate the port, remove the semi-colon before the
COM2 port setting line in the IQcapture.def file:
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1.6.3 Auto Exposure and Auto Exposure Setup
ImageQuant Capture’s acquisition window includes a check box and setup button for
Auto Exposure.
Auto Expose
controls
Auto Expose Setup options
Auto Exposure Setup (Auto Exposure Compensation Setting):
4 choices available
• Normal Exposure for image saturation: Use this choice for normal
Colorimetric and Fluorescent imaging.
• Under Exposure for chemilumenescence
• Over Exposure for faint band detection.
• Custom Exposure Compensation: user definable Exposure Value (EV).
The up/down arrows allow the user to change the EV value by whole units (left up/down
arrows) or by 1/8th (right up/down arrows).
Auto Exposure works in both “Preview” and “Capture” modes. As the software
calculates the correct exposure time you will see the status bar change from red to yellow
and then to green. When it reaches green the software has achieved the correct exposure
time. If the bar turns pink, this is an indication that there are saturated pixels in the image
area at the exposure time calculated.
In Capture mode the image will be acquired when the bar turns green. In Preview mode
the software will continue exposing over and over at that exposure time until a different
mode is selected. If “Capture” is selected after the software has achieved the correct
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exposure time in Preview mode, the software will begin acquiring at the last exposure
time calculated during the preview—it does not start the calculation over from scratch.
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1.6.4 Cabinet Controls - Activating the Light Source and
Selecting a Filter
Use the mouse to click on the desired light source in the ‘virtual’ cabinet control interface
or you can use the controls on the cabinet itself. Both mechanical and software controls
are linked and communicate display setting selections.
Note: There is a slight delay when the button is depressed until the light source is
fully activated.
Standard lighting choices include:
Transillumination White:
Transillumination UV:
Reflective White:
Reflective UV (optional)
(No Light Selected)
For protein gels, autorads, film, plates, flasks
For fluorescent gels such EtBr, SYPRO® Red, etc.
For colorimetric blots and membranes
For SYBR® green, TLC plates, and
Chemifluorescence
For chemiluminescence
You can also select your FILTER to correspond with your sample staining. The
options include:
Filter Position #1:
Filter Position #2:
Filter Position #3 (optional):
Filter Position #4 (optional):
Filter Position #5 (optional):
(optional):
Chemiluminescence samples, no filter
Ethidium Bromide, colorimetric stains, film,
SYPRO® Orange (595nm)
SYBR® green (557nm)
Fluorescein, SYBR® Gold (520nm)
SYPRO® Red, Texas Red (630nm)
Hoechst Blue (460nm)
Note: Each Filter has an approximate bandwidth of +/- 40nm to allow for use with
other fluorescence stains as they are developed.
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1.6.5 Use Preview to Set Exposure Time
Once the sample has been positioned and the camera has been focused, close the door to
the ImageQuant light cabinet and make sure that the appropriate illumination source is
turned on. Also make sure the cabinet door indicator in the Cabinet Control software
interface indicates CLOSED.
Click on the blue PREVIEW button and select the desired exposure time in the menu
options to give the desired image intensity quality. Individual adjustments for 1/30
seconds, seconds, minutes, and hours are available.
•
For most white-light applications, 8-10 millisecond exposures are sufficient
with final adjustments of the aperture for best image quality.
•
For UV fluorescence applications, 250 milliseconds to 4 seconds is usually
sufficient and the aperture should be adjusted fully open, F1.2 for the
standard zoom lens. The ‘show saturation’ option should be selected for
these applications.
Note: When the system is switched to PREVIEW mode, the image may flash or
change brightness because the camera collects photons from the image for a longer
period of time before sending the image to the computer’s display readout.
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1.6.6 Optimizing the Gray Scale for Saturation and Contrast
Displays
If an image will be analyzed, it is important that it not be over-saturated (too light) or
under-exposed (too dark). Using Show Saturation, the user can see the areas of the
image that are assigned to each end of the gray scale spectrum, and can adjust the
imaging controls accordingly.
The Show Saturation checkbox (found below the camera control functions) allows the
user to access the Saturation Palette during image acquisition. The Saturation Palette
is a modified gray scale palette in which black (gray level 0) is replaced with green, and
white (gray level 255, 4,095, or 65,535) is replaced with red. With this palette, over- and
under-exposed areas of the image are shown as green or red, while areas within the linear
range of the CCD chip are shown in gray scale.
During image acquisition, note regions of the image that appear red or green. Adjust the
exposure time and/or the camera aperture to minimize the amount of red and green in the
image area. If an image will be quantified, it is especially important that the actual
sample area be neither red nor green. Once you are satisfied with the displayed image,
you may click off the Show Saturation.
The other three selections Chemi Display, Auto Contrast, and Reverse are
visualization tools designed to enhance contrast and provide flexibility in regards to how
the user wishes to view the image. Auto Contrast will display the image with automatic
black, white and gamma adjustments according to the image histogram information
(black/white levels). Reverse will show the sample as a negative by switching the black
and white values. Chemi Display utilizes both the auto contrast and reverse functions as
well as adjusting for gamma. It is intended for use with chemiluminescent samples.
These options are also available in the FrameGrabber portion of the acquisition software.
It is important to note that these Contrast Display options are only visualization tools and
are NOT changing the image data that is being acquired by the CCD camera.
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1.6.7 Acquire and Transfer the Image
Once the appropriate image is displayed on the screen, click on the CAPTURE button to
capture and display the image in ImageQuant Capture. The acquired image will be
automatically adjusted by a zoom factor based on the resolution setting to display the
image optimally. From there, the image can be enhanced using ImageQuant Capture’s
enhancement tools and/or transferred to an ImageQuant TL module for analysis.
Once a satisfactory image has been captured, we suggest saving it as an original file.
However, if you do not save before transferring the image to an ImageQuant TL module
for analysis then you will be prompted to save as part of the transfer process.
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1.6.8 Capturing Images Using the FrameGrabber Mode
If kinetic, multiplex, color, or chemiluminescence experiments are desired where you
wish to have the system automatically capture several images at preset exposure times,
preset time delay between images, preset lighting sources, and preset filter choices, the
FrameGrabber tab can be selected in the Tool Box. (FrameGrabber setup is also
accessible in camera setup acquisition screen. To access this screen select the acquire
button on the tool bar and then select ‘FrameGrabber’ on the acquisition screen.
ImageQuant Capture standalone software does not include FrameGrabber acquisition
tools)
FrameGrabber Setup options in the Tool Box
FrameGrabber Setup button on
the Acquisition screen
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Once FRAMEGRABBER is selected, a display box will appear for independent control
of all lighting, filters, and exposure delay for each image frame.
The TOTAL FRAMES setup provides you with the ability to determine how many
individual frames (images) you want for the sequence. There is a maximum of 50 frames
(images) and a minimum of 1 frame that can be captured with each sequence.
The FRAME selection is used for setting up
the conditions for each frame (image). For
example, if three (3) images are to be
captured, you would choose FRAME 1 and
setup all of the desired lighting and filter
requirements.
You can then click on
FRAME 2 and repeat the above. Or, you
can click on COPY TO NEXT to help
speed up the setup process. COPY TO
NEXT copies all settings from the previous
frame to the current frame. Usually, for
chemiluminescence imaging, all lighting is
off and the filter wheel is positioned for the
chemiluminescence position for all frames.
Thus, the only variable that is changing
from one frame to the next is the exposure
time. In this situation, COPY TO NEXT is
a useful tool to save time in the setup
process.
If you are performing kinetic experiments
where you want to have a predetermined
delay between captured images, then you
can use EXP DELAY to configure this function. The default EXP DELAY is set for the
shortest possible delay (19 milliseconds), but can be configured up to 50 minutes between
each image. Also, if your exposure delay and/or exposure time and/or lighting
options/filter position are consistent for the entire sequence, then once you set up the first
frame, you can select the COPY TO END selection to automatically choose the first
frame settings for the entire sequence of frames (images).
Once the sequence is set up for the desired configuration, click on the GO button. The
software will then begin the image acquisition process for each frame of the image. When
it is complete, the Camera Setup and Preview window will disappear and the TOOL
BOX will automatically display the FrameGrabber tools. This will allow you to play
back the sequence, save or load the sequence, or record a new sequence.
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Once all images have been captured, the FrameGrabber tab will become displayed in the
Tool Box. The buttons on this tab perform the following tasks:
REC
PLAY
STOP
PAUSE
REW (rewind)
REV (reverse)
FWD (forward)
DEL (delete)
LOAD
SAVE
Opens the Camera Setup and Preview window to record a
sequence.
Display a continuous loop of all of the captured images.
Stop the sequence at the current frame display
Pause the playback of the sequence at a user defined image
Rewind the sequence to the first image
Play the sequence in a continuous loop in reverse
Forward the sequence to the last image
Delete the sequence on the display. THIS FUNCTION WILL
NOT DELETE A SEQUENCE SAVED TO THE HARD DRIVE.
Load a previously saved sequence. THIS FUNCTION WILL NOT
LOAD INDIVIDUAL IMAGES PREVIOUSLY CAPTURED IN
NORMAL CAPTURE MODE.
Save a sequence of images.
1.6.9 Saving an Individual Image from a Sequence
After you load, play, and stop a sequence at the desired image, it is possible to save the
individual image seen on the screen. Use the SAVE AS button located on the tool bar to
save the image in the desired location and file format on the local or network drives.
Note: This will save the current image only. To save the entire sequence,
select the ‘save’ icon on the FrameGrabber tab in the tool box.
1.6.10 Loading/Saving an Entire Sequence
You can load or save an entire sequence by using the load and save icons in
the FrameGrabber tab in the tool box. When a sequence is loaded the loaded
frames will be seen as blue in the frame reel. When a sequence is saved a dialog box will
appear prompting you to select the location and name for the sequence that you would
like to save the images as.
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1.6.11 FrameGrabber: Save/Load FrameGrabber Setup Routines
Two buttons “Save Setup” and “Load Setup” allow you to save and load all
FrameGrabber setup parameters. Files are saved as *.mvf files.
Load Setup and
Save Setup buttons
1.6.12 Frame Stacking
At the top of the Camera Setup and Preview window is an option for stacking frames. If
this selection was chosen during acquisition of the image Stack Frames will use all
previous exposure information to sequentially add images to one another. Normal
Sequence will not perform this addition. Please note that stacking frames will increase
the noise level in acquired images.
Sample case:
Capture 5 frames at 1-5 sec exposure for total time elapsed 15 sec
Display after summation of following frames:
Frame 1 (1 sec)
Frame 2 (1 + 2 sec)
Frame 3 (1 + 2 + 3 sec)
Frame 4 (1 + 2 + 3 + 4 sec)
Frame 5 (1 + 2 + 3 + 4 + 5 sec)
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1.6.13 Capturing a Color Image Using the FrameGrabber
Function
A color image can be generated by acquiring three images each taken with a red, green
and blue emission filter. Once saved, these images are then combined in the Overlay
pull down menu. Open the image captured with each of the three filters as instructed and
a RGB (red, green, blue) true color image will be generated.
For color imaging, you will need to the following optional filters:
Red Filter
SYPRO® Red Filter (Catalog #: 63005664)
Blue Filter
Hoechst Blue Filter (Catalog #: 63005665)
Green Filter
SYBR® Green Filter (Catalog #: 63005661)
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Chapter 2: Getting Started - Basic
Imaging Functions
2.1 Contrast Adjustment
The Contrast Adjustment window allows for the best visualization possible of a sample
utilizing the black, white, and gamma adjustments, as well as, image reverse and auto
contrast.
The image on the screen is made up of picture elements (pixels) in an array. Each pixel
is assigned a brightness (or a gray scale value) level between black and white. A very
bright image has most of its pixels registering high gray level values and conversely, a
very dark image has most pixels registering low gray level values (approaching zero).
The distribution of these gray values to the image is determined by the Contrast
Adjustment Controls. These controls regulate the Black level, White level, and
Gamma setting (brightness linearity), allowing adjustment of the display to obtain the
best image possible.
Note: These enhancement features modify the image display on the monitor only,
and do not change the original quantitative data.
ImageQuant Capture can also import RGB color images. ImageQuant Capture
automatically detects this process and the Contrast Adjustment tools are configured for
color image adjustments.
An image can be enhanced using these tools and then saved as a Modified file for
publications. However, to preserve the original image information, it is recommended
that the file be saved as a different file name when using the save modified.
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2.1.1 Using the Contrast Adjustment Tools for Grayscale Images
There are three sliding scales found in the image control area to the right of the image.
Below each scale is a box displaying a number that corresponds to the position of the
slider. By adjusting these sliding scales, the image display can be optimized.
Imaging Display Tools: Black Level, White Level,
Gamma Setting with B/W/G, Linear, Log, and Equalize options
To adjust any of these settings, place the cursor on the slider. Click and hold down the
left mouse button while dragging the slider to a new setting. As the slider is moved along
the scale, the image display is updated, along with the change in numeric value. The
arrows above and below the scale bars can also be clicked to change the settings in single
unit increments, or, the user may type in a specific unit.
2.1.2 Black Level Adjustment
The number beneath the Black Level scale corresponds to a gray level. There can be
256, 4095 or 65,536 possible gray levels depending on the system type. For the example
below, an 8 bit image will be used with 256 total gray scale values. When the Black
slider is at the very top of the scale, the number is 0. As the slider is moved downwards
along the scale, the number increases and the image becomes progressively darker. This
is because all pixels at the specified gray level and lower are shown on the screen as
black pixels. If the slider is set to 0, all the pixels whose gray levels are at 0 are shown as
black. If the setting is then changed to 60, all the pixels between 0 and 60 are shown as
black and the image appears darker.
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Black Level set at 0
Black Level set at 60
2.1.3 White Level Adjustment
The number beneath the White Level scale also corresponds to a gray scale value. When
the slider is at the very bottom of the scale, this number is 255. As the slider is moved
upwards along the scale, the number decreases and the image becomes progressively
lighter. This is because all pixels at the specified gray level value and above are shown on
the screen as white pixels. For example, if the slider is set to 150, all the pixels between
150 and 255 are shown as white and the image appears lighter.
White Level set at 255
White Level set at 150
2.1.4 Gamma Setting Adjustment
Changing the Gamma setting affects the image brightness by adjusting the linearity of
the image on the screen and printouts, but does not affect quantitative data.
The camera sees objects linearly while the human eye does not. When the Gamma
setting is set to a value of 1, the image is displayed as the camera sees it. This, however,
is different from what the human eye detects. By adjusting the Gamma setting, the user
can make the image on the screen correspond to what is seen when he/she looks directly
at the object. We recommend a Gamma setting of 0.55 for best visual representation.
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Gamma set at 1.0
Gamma set at 0.55
2.1.5 The Auto Contrast Selection
The Auto Contrast feature will automatically scale the black and white values of an
image to more tightly fit the gray scale intensity profiles (histogram). This selection will
use different black and white values for different images depending upon their unique
histograms. A more dramatic visual change will take place for low light level images
(such as chemiluminescence) where smaller portions of the histogram are used. This
selection can be turned on or off and will adjust differently for each image.
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2.1.6 The Reverse Button
The Reverse button inverts the gray levels of the displayed image, converting a positive
image to negative, or vice versa. For instance, an image with black bands on a white
background is converted into an image with white bands on a black background by
simply clicking the Reverse button. Clicking the button a second time returns the image
to its original form.
Original Image
Reversed Image
Note: Reversing an image changes the way it is displayed on the screen, but does
not change the quantitative data. For example, the bands in the above gel have the
same density, regardless of whether the gel is displayed as white bands on a black
background or black bands on a light background. For information on reversing
pixel values, see Invert option under Setup|Preferences.
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2.1.7 The Grid Button
The Grid button provides an on-screen grid after image acquisition to check for proper
sample alignment.
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2.1.8 Making Linear, Log, or Equal Adjustments
Original image of film
with default BWG
settings
Image of film with
linear Contrast
Adjustments selected.
Linear provides
minimum and
maximum adjustment
tools from 0 to 100%.
Linear stretches the
grayscale range of the
displayed image to the
maximum system
dynamic range of 065,535 grayscales.
Image of film with log
Contrast Adjustments
selected
Log provides
minimum and
maximum adjustment
tools from 0 to 100%.
Log performs a
logarithmic adjustment
to the grayscale range
of the displayed
image.
Image of film with
equal Contrast
Adjustment selected.
Equal automatically
adjusts the image
display for maximum
contrast which is
beneficial for faint
band detection.
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2.1.9 Using the Contrast Adjustment Tools for Color Images
ImageQuant Capture can also import RGB color images. ImageQuant Capture
automatically detects this process and the Contrast Adjustment tools are configured for
color image adjustments.
Contrast Adjustment display with Show thumbnail clicked for color image
The Black, White, and Gamma bars can now be adjusted individually for each of the
three RGB color channels by selecting on the Red, Green, or Blue button and making the
appropriate B/W/G adjustments
Also, by clicking on the Show thumbnail option, a thumbnail display of each of the
three color channels is displayed. These thumbnails also display any black, white, or
gamma adjustments for each color channel.
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2.2 Tool Bar
The Tool Bar window provides intuitive buttons for the most common functions in
ImageQuant Capture.
Tool Bar
The Open button functions identically to the File Open function in the
upper menu bar. This function is used to open previously saved images.
Detailed instructions are available in Chapter 3.
The Zoom Out and Zoom In buttons provide easy zooming ability while
you are active in image enhancement functions providing increased
versatility. Detailed instructions are available in Chapter 4 as this function
is also available in the Tool Box.
Note: The Status Bar always displays the image zoom setting in real
time.
The Saturation button allows for a quick image display of saturation.
Completely saturated black regions (gray scale 0) will turn green and
saturated white regions (i.e. gray scale 255, 4095, 65,535) will turn red.
This is a useful tool to check for linearity of an image before analysis
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occurs. Saturation is a feature that is most important during the
acquisition stages and is thoroughly detailed in the acquisition features of
the system manuals.
The Img Drag button is useful for to pan with a zoomed image. To
activate this function, click on the button and move the mouse cursor to
the image. The cursor will have changed to a small hand. Click the left
mouse button and drag to move the image. When you are done, you can
click the Img Drag button again to deactivate it.
Note: Img Drag is only active when the image is zoomed in beyond
1X (greater than 100%). The button is grayed out in other zoom
modes.
The Print button allows for quick and easy image printing with the active
default printer. Detailed instructions on image printing are available in
Chapters 2 and 3 as printing can also be accomplished via traditional
Windows File menu options.
The Notepad button opens up a dialog box to allow the user to quickly
track experimental conditions, comments, and any other details to be
saved as an electronic copy for future reference. Detailed instructions are
available in Chapter 3 as this Notepad function is duplicated in the
Utilities function in the upper header bar.
Clicking Reset returns the image to the system defaults as specified in the
active default file. This is detailed later in Chapter 3.4 of the manual.
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Clear removes any overlays currently displayed on the image. This
function can be useful if annotations or other displays obscure parts of the
image.
Once an image is displayed, it can be printed on the default printer by
clicking the Print button in the Tool Bar window display. Most printers
can be configured through the Windows operating system to be the default
printer. Refer to your Windows operating manual for more information on
installing a default printer.
Sample Printouts
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2.3 Tool Box
The Tool Box window contains an intuitive interface for performing all image
enhancement functions.
Tool Box
It contains controls for enhancing and adjusting the image. This includes software
filtering, false colors, zoom factors and other unique features. These tools are detailed in
chapter 4 of this manual.
2.4 Status Bar
The Status Bar is located on the bottom of the monitor and provides a real time display
of the mouse cursor x, y position, the image zoom factor, and the grayscale intensity at
the mouse cursor x, y position.
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Chapter 3: Pull-Down Menus
Across the top of the screen is a Windows menu bar containing several system operation
functions. These include file saving and loading, edit, image, setup, overlay, file utilities,
view and help functions.
ImageQuant Capture Menu Bar
3.1 The File Menu
Use this menu to save an image as a file, retrieve a previously saved image, select
different printers, print an image to a parallel printer, overlay multiple images in RGB
color channels, close an image, log-off of the system or exit the system.
ImageQuant Capture File pull-down menu
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3.1.1 File|Open
This function opens an image that has been previously saved as a TIF, GLP, BMP, PCX,
TGA, PIC, JPG or Macintosh® TIFF (MAC) file.
File Open Dialog Box
Using the left mouse button, click on the name of the file to be loaded. That name is then
highlighted in the list and appears in the text box below the File Name prompt.
Alternate disk drives can be accessed using the “Look In” dialog box.
Once the file has been selected, click on the Open button to load the file. (Alternatively,
double-click on the file name.) The dialog box disappears and the selected image appears
in the image window on the screen.
To dismiss the dialog box without loading an image, click on the Cancel button.
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3.1.2 File|Overlay
To superimpose images, use the OVERLAY function under the File menu. This function
will display separate multiplexed images or a RGB color image as a compiled image with
the appropriate color channel images added together. A simple way to acquire multiple
images for this function is to use the FrameGrabber function in image acquisition and
acquire a series of identical images.
The Overlay Images option allows you to overlay up to three different images with three
different color channels. You can select the BROWSE button for each color channel and
select the appropriate images to be used for generating a color image. For example, if
you have a saved grayscale images of an identical gel taken with a SYPRO® red filter for
the red stain and a SYBR® green filter for the green stain, you can choose these images
in the appropriate Red and Green Channels to generate a composite image with the red
and green colors mapped onto the compiled image.
Note: The images must be the same bit depth and resolution for the software to
overlay the images.
3.1.3 File|Close
This function closes the image currently displayed on the screen.
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3.1.4 File|Save and Save As
Save allows original images to be saved in several different formats. Save As allows
images that have previously been saved to be saved in a different location or as a
different file type without affecting the original image.
ImageQuant Capture has the ability to save files in several formats, see the following
figure:
File Formats:
*.tif, *.bmp, *.glp, *.pcx, *.tga,
*.pic, *.jpg, *.mac,
Enter a new file name in the text box adjacent to the File Name prompt. Next, choose a
file type from the Save As Type list.
ImageQuant Capture will automatically give the appropriate 3-character extension.
ImageQuant Capture will also create a file with the same base name and a .STP
extension. This setup file saves information specific to this file, such as Black Level,
White Level, Gamma Setting and 1D-Multi template placement. If the file is accessed
later, these settings will be recalled.
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File Types
TIFF is the default file format for ImageQuant Capture files. TIFF is an acronym for
"tagged image file format" and was developed as a flexible and machine-independent
graphic file format. Saving as a TIFF file will allow users to double-click TIFF files
from Windows Explorer and automatically launch the application on any machine that
has ImageQuant Capture loaded on it. Users may customize this in the preferences
section covered in section 3.4 of the manual if they wish to change the default file type.
Mac TIFF is the Apple Macintosh® version of the TIFF file format. Mac TIFF files have
the extension .MAC so they can be easily distinguished from Windows TIFF files. Most
software can distinguish between Mac and Windows TIFF formats and can accept either.
ImageQuant Capture offers the option of both formats in the event that only one of the
two is acceptable.
GLP is a proprietary file format that allows changes to only be made in ImageQuant
Capture programs. It will accept 8 bit and 16 bit images and can not be opened in any
other software program.
BMP, PCX, TGA, PIC, JPG, GLP are additional graphic file formats which may be
useful when saving an image for desktop publishing. These file formats can be imported
directly into many Macintosh® and PC programs. (See Appendix A for more
information.) Do not use these formats to save images that will be analyzed later, since
pixel data can be lost or altered when saving files in these formats.
Note: Not all of the file types listed above can be saved as a 16 bit file. Some may
require you to convert the image to an 8 bit file first.
Original versus Modified Files
An Original image file is one in which the data is saved in an unaltered form. This
option should be selected if the image will be analyzed later. If the Black level, White
level, or Gamma settings have been adjusted, the new values are saved but the pixel
values are not altered. When this file is opened at a later time, ImageQuant will display
it with the values that were displayed when the image was saved. However, it is still
possible to revert to the original raw image file by selecting Reset on the Tool Bar.
Annotation information cannot be saved with the Original image option. (It can,
however, be saved as an Overlay.)
When an image is saved as a Modified file, it permanently retains the changes to the
image's Black level, White level, and Gamma setting. Annotations and any filtering
performed are also saved with the image, replacing original image information with the
new information.
Note: If the image is saved as a Modified file it is converted to an 8-bit image.
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3.1.5 Printer Setup
This function displays a dialog box in which the settings for the parallel printer are
specified. When all the pertinent printing preferences have been specified, click on the
OK button. If you purchased a printer with ImageQuant, this will be preset from the
factory.
Printer Setup Dialog Box
Printer…. Dialog Box
For more information on using the Print menu, see the Windows manual.
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3.1.6 Print
This function sends the image to the default printer specified in Print Setup.
3.1.7 Logoff
This function logs the current user out of ImageQuant Capture when security features are
in use.
3.1.8 The Exit Function
The Exit function closes ImageQuant Capture. To restart ImageQuant Capture from
Windows, double-click on the ImageQuant Capture icon on the desktop.
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3.2 The Edit Menu
The Edit menu provides the ability to copy, crop and remove any annotations or filters
that have been added to the original image.
Edit pull-down menu
To activate the Copy and Crop functionality, place a check mark next to EDIT
ACTIVATION. This will turn the mouse cursor into a + sign that will allow you to
highlight the region of interest for the image. After Edit Activation is highlighted, the
desired area of interest is drawn using the mouse.
Ready to Crop or Copy
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Once this is completed, you can select either the COPY or CROP function in the EDIT
menu options. COPY will copy the desired area of interest into the Windows Clipboard
and allow you to paste into any desktop publishing package (i.e. Word, Excel, Adobe
Photoshop, etc.). CROP will display just the region of interest as the active window in
the ImageQuant Capture interface.
ImageQuant Capture interface after cropped region has been selected
3.2.1 Reset and Clear
The Reset option configures the Black, White, and Gamma settings to default settings.
Clear removes any annotations that are present on the image.
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3.3 The Image Menu
The Image menu option provides the ability to perform a variety of image processing
functions.
Image pull-down menu
3.3.1 Equalize
The equalize option performs a duplicate function to the EQUAL option in the Contrast
Adjustment Window. This is a useful function for detecting faint bands on a sample.
3.3.2 Arithmetic
The Arithmetic function is used to add, subtract, average and divide several images
together to generate a compiled image.
Image Arithmetic dialog box
To average a set of images together open one of the images in the set and then select
‘Average a Set…’ under the Image pull-down menu. A prompt will appear allowing
the user to select all of the images that for the set. It is possible to browse the directories
looking on the network drives and removable media if necessary. Once all of the images
have been selected, click on the Open button to finish the set. The resulting image is an
average of all of the images together. This is a useful function for extending the dynamic
range on a set of similar images by allowing bright spots and faint spots to be seen on the
same image.
The other functions are adding, subtracting and dividing images together. Adding
together images is frequently used for colorimetric markers run together with
chemiluminescent samples. Subtracting images is often used to remove noise from a
sample by running dark images first and subtracting them out of the final image. The
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most common application for quotient is for those technical users who run their own flat
field corrections. This can be done using the Flat Field Calibrate selection under the
Image pull-down menu which will be described in detail later in this section.
All three of these arithmetic functions are performed by opening the main image that will
be adjusted. Next select the appropriate arithmetic function under the image pull-down
menu. Then select the image that is to be added, subtracted or divided from the original
image and select open. The dialog box will disappear and the resultant image will
appear.
Note: Images that have been arithmetically altered are ideal for publications and
documentation, however, they are strongly not recommended for analysis as the
pixel values have been adjusted.
3.3.3 Conversion
Since ImageQuant Capture can generate 16-bit files, the conversion option is useful when
an image is to be imported into a program that only accepts 8-bit images. Choosing this
option will convert a 16-bit image into an 8-bit image.
Image Conversion dialog box
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3.3.4 Flat Field Calibrate
Flat Field Calibrate is a function that is used to ‘flatten’ the image so that the pixel data
is even across the entire image area. This is a function that is useful for large gels and
other applications that use the entire field of view for an image.
Creating flats can be art in itself; there are many documents on the internet that can help
users interested in this arena to create the ideal flat for the application. However, some
useful flats that have been created in the past involve very simple tools like a piece of 8.5
x 11 regular low quality copy paper (higher quality paper contains watermarks that will
show up in the final image). It is essential that both the flat and the gel images be
identical, including the aperture, zoom (if applicable) and focus settings on the lens.
Step-by-Step Flat Field Calibration:
1. Place the gel or other application in the cabinet or dark room.
2. Adjust the aperture, zoom (if applicable) and focus on the lens.
3. Use auto-expose set to the normal selection and acquire an image of the gel.
(Alternatively, it is possible to select show saturation and then use the preview
option and adjust the exposure time manually to just under saturation.)
4. Save the image of the gel.
5. Next, remove the gel from the UV transilluminator or white light tray and
clean and/or dry off the surface if necessary using glass cleaner.
6. Place the white piece of paper onto the appropriate surface. (For example, if
the UV transilluminator was used, place the paper onto the UV
transilluminator; if the white light tray was used, place the piece of paper onto
the white light tray.)
7. Turn on the appropriate light source used (white light, UV transilluminator,
epi lights, etc.).
8. Without changing anything on the lens acquire another image of the ‘Flat’
image following step #3 again.
9. Save the Flat image.
10. Open the original gel or other application image.
11. Select Flat Field Calibrate from the Image pull-down menu.
12. Browse the directories for the ‘Flat’ image created.
13. Click on open. Make sure to save the flat field calibrated image for future
use.
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3.3.5 Image Resize
The image resize function can be used to resize an image to a specific dimension for use
in graphical presentations. You have the option to ‘Preserve aspect ratio’ to avoid image
dimensional distortion, or you can deactivate this function and configure the image
resolution to the desired Width and Height dimensions.
Image Resize dialog box
Note: It is recommended that you DO NOT perform quantitative analysis on
resized images.
3.3.6 Image Info
The Image Info function provides a dialog box with all detailed image properties. An
example is shown below. Click on the OK button to close this dialog box.
Image Info dialog box
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3.4 The Setup Menu
This menu customizes the system settings by allowing users to save default parameter
preferences and customize the software settings.
Setup pull-down menu
3.4.1 Default Parameters
Default parameter files eliminate the need to readjust the system settings each time the
program is used, and can be especially useful if more than one person works with the
program.
The default file used by ImageQuant Capture when it initially loads is called
IQcapture.def. The system setting defaults are:
Exposure Time:
Black Level:
White Level:
Gamma Setting:
REVERSE:
ARRAY:
1D MULTI:
8/milli sec
0
up to 255, 4095, or 65,535 - depending on the system type
0.55
off
96 circles (12 x 8)
8 lanes
While these parameters can be changed, we do not recommend changing
IQcapture.def. Instead, we recommend that each user set up an individual default
file(s) reflecting their preferences.
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3.4.2 Save Defaults
Every time a default file is saved, all of the settings for the parameters listed above are
saved. These can be loaded later and applied to any image.
Save Defaults Dialog Box
Once any of the system settings have been changed, a new default file can be created. To
save a default file, enter a file name by typing in the text box below the File Name
prompt. If it is necessary to change the directory or drive to which the file will be saved,
select a different directory under the Save In pull-down menu. ImageQuant Capture will
automatically add the appropriate 3-character extension.
Click on the SAVE button. The Save As dialog box disappears and a new file is created.
To exit this function without loading a default file, click on the CANCEL button.
3.4.3 Load Defaults
This function retrieves system default settings from a saved file.
To open a default file, enter the name of the file by typing its name in the text box below
the File Name prompt. If it is necessary to change the directory or drive to which the
file will be saved, select a different directory under the Save In pull-down menu.
Once the file has been selected, click on the OK button to load the file. The Load
Defaults dialog box disappears and the image controls are adjusted to reflect the settings
in the file loaded.
To exit this function without loading a default file, click on the CANCEL button.
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3.4.4 Security
When the system is shared by a number of people or laboratories, a method of keeping
track of its use may be helpful. The Security feature allows various levels of security
and user log functions.
We suggest one user be designated as the supervisor of the system. This individual
should refer to Appendix B, which describes the security features in detail.
Note: It is strongly recommend that you remove Appendix B from the manual to
avoid unauthorized users changing the password and the security settings.
3.4.5 Print Info
When printing an image, basic image information is included on the print. This includes
the exposure time, the Black level, White level, and Gamma setting, the date and time
the image file was generated, an image ID number, and the name of the file to which the
image is stored.
Setup Print Image Info Dialog Box
To print this information at the top of the print, choose Top from this menu. To print at
the bottom of the print, choose Bottom.
Note: Printing image information at the top or bottom of a print may obscure a
small portion of the image. To print the image with no information on it, choose Off.
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3.4.6 Print Mode
ImageQuant Capture provides custom printing options.
Setup Print Image Info Dialog Box
Printing can be achieved using three different methods:
Full Image:
Screen Dump:
Image Window:
Prints the original image. Does not print zoomed images or
images overlaid with data screens.
Prints the imaging area. Well suited for printing images overlaid
with data screens and/or graphs, zoomed images, etc.
Prints the highlighted window.
3.4.7 Print Date
Under the “Setup” menu there is a selection labeled “Print Info”. This allows the user to
change the format in which the date is printed. The choices are MM/DD/YYYY and
DD/MM/YYYY.
3.4.8 Preferences
In order to change the preferences of the system, you will need to find the administrator
of the ImageQuant Capture program to log in. If you do not have an administrator of the
ImageQuant Capture program, see Appendix B in this manual.
Login Dialog box for Preferences
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There are four tabs in the Preferences menu (ImageQuant Capture standalone software
does not contain the Image Acquire or Cabinet Settings tabs):
1. General – Configure prompts and file saving/opening formats.
2. Image Acquire – Inverts the image seen by the camera and adjusts the ROI
values.
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3. Cabinet Settings – Used for adjusting the port settings and customizing filter
positions on the cabinet.
4. Auto Enhancements – Used to customize the Auto Enhance Levels located
in the tool box.
To make changes to the preferences, select your change by typing in a new value or
select/de-select the appropriate box with a check mark and then select apply. Some
settings may require that the software be restarted before the change will take effect.
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3.5 The Overlay Menu
The Overlay menu provides a means of saving and retrieving annotation overlays. This
is especially useful when a standard gel format is run repeatedly. Lane numbers,
molecular weight marker sizes, and other pertinent information can be stored as an
Overlay file and retrieved at a later date. This eliminates the need to re-enter the
information each time a new image is captured.
Overlay pull-down menu
An overlay is any set of annotations (text, boxes, arrows, etc.) that have been drawn on
the image. They can be saved as a group and opened later. If repetitive samples are
being imaged, an overlay eliminates the need to re-enter the same information (such as
lane numbers, standard sizes, etc.) continually.
3.5.1 Saving an Overlay
Once annotations have been made, select Save Overlay from the Overlay menu.
Save Overlay Dialog Box
Enter a new file name in the text box below the File Name prompt. ImageQuant Capture
will automatically give the appropriate 3-character extension.
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The current directory is the one in which the new overlay file will be saved.
necessary, change the directory or drive as described in Section 3.1.
If
Once a name has been entered and the appropriate directory has been accessed, click the
SAVE button to save the overlay file.
3.5.2 Loading an Overlay
The Load Overlay function allows Overlay files to be retrieved and applied to the image
currently displayed.
Opening an Overlay after an image has been captured places the annotations on top of
the image. They can be stored as part of the image by saving the file as a modified file.
Select the name of the file to be loaded. (If necessary, change the directory or drive.) The
file name is then highlighted in the list and appears in the text box below the Filename
prompt.
Once the file has been selected, click on the OK button to load the file. (Alternatively,
double-click on the file name.) The dialog box disappears and the annotations in the
selected file appear on the image.
To dismiss the dialog box without loading annotations, click on the CANCEL button.
Overlay Libraries
ImageQuant Capture contains a library of overlays that can be accessed through the Load
Overlay function described above. This library of overlays is stored in the Image folder
located in the ImageQuant Capture directory:
08WHITE.OVR / 08BLACK.OVR
10WHITE.OVR / 10BLACK.OVR
12WHITE.OVR / 12BLACK.OVR
15WHITE.OVR / 15BLACK.OVR
24WHITE.OVR / 24BLACK.OVR
HINDIII.OVR
8 lane labels in white/black
10 lane labels in white/black
12 lane labels in white/black
15 lane labels in white/black
24 lane labels in white/black
“λHindIII” label
The objects in these overlays can be repositioned, resized, re-colored, copied or deleted
as needed.
Note: Overlays are specific to the resolution of the image that they were created on.
Therefore, if an overlay was created on an image with a different resolution than the
image that the overlay is being loaded onto, the overlay may not match the original
image.
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3.6 The Utilities Menu
A number of functions are now handled by Windows programs. To access many of these
programs while in ImageQuant Capture, open the Utilities menu and select the program
of choice.
Utilities pull-down menu
3.6.1 Explorer
This option can be used as a shortcut to Windows Explorer, which allows access to files
and other information saved on the local machine or the network.
3.6.2 Notepad
The Notepad is a blank screen that allows the user to make notes about the experiment
and save them as an ASCII file. The Notepad is useful for saving any imaging comments
or experimental conditions with the saved image for future reference.
Notepad Display Window
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3.7 The View Menu
The View function provides the ability to control the display of the on-screen control
tools as well as provide image enhancement abilities.
View pull-down menu
Four main tools exist within ImageQuant Capture: Contrast Adjustment, Tool Bar, Status
Bar, and Tool Box:
Contrast Adjustment Window
Tool Bar Window
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Tool Box Window
Status Bar
These tools are automatically displayed when ImageQuant Capture is launched for
additional ease of use and to generate a common ‘look and feel’. However, if you would
like to hide any of these tools they can be turned off in the View menu by just
deactivating the check mark next to the item that you would like to remove from the
screen. Also, since these items are ‘floating’ tools, you can click on Default Tools
Position to move all tools to the default locations for more intuitive operation. Lastly,
except for the status bar, it is possible to select and move any of the other tools to a
custom location.
3.7.1 Zoom Functions
Additional options provide the ability to Zoom In and Zoom Out on the image, Zoom to
1X and to Fit to Screen.
Note: Zoom In and Zoom Out are duplicate functions for the Zoom In and Zoom
Out icons in the Tool Bar and the Zoom options in the Tool Box.
3.7.2 Show Annotations
There is also an option to display/not display any annotations associated with the current
image. To display the annotations, place a check mark next to the ‘Show Annotations’
option in the View menu. Otherwise, remove the check mark to remove the annotations
from the image viewing area (the annotations are not deleted by selecting this option).
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3.8 The Help Menu
Help pull-down menu
3.8.1 On-Line Note
On-line help is available from the ON-LINE NOTE section of the help menu.
3.8.2 About
To display system information, select the About option in the Help menu. This button
accesses a pop-up box. This box shows the system serial number and software version
number. Use this information when contacting technical support, upgrading software,
etc.
ImageQuant Capture About Help Dialog Box
To close the box, click on the OK button.
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Chapter 4: The Tool Box
Image enhancement tools are contained within the Tool Box as indicated. This tool set
allows the user to zoom the image, rotate-flip the image, show the image histogram,
perform automatic image enhancement, annotate on the image, display false colors, apply
software filters, and activate the FrameGrabber function.
4.1 The Zoom Tool
The Zoom Tools
The Zoom tool is found in the Tool Box. This function magnifies an image, making
details easier to see, and allows movement around the magnified image. An image can be
displayed ¼x, ½s, 1x, 2x, 4x, or 8x larger than the original display by clicking on the
appropriate buttons. To return to the original magnification, click on the 1X button. When
an image is magnified, only part of it can be displayed on the screen at any one time. To
see different parts of the magnified image, use the Pan Control box within the
thumbnail. The outer box shows a thumbnail of the entire image while the small, inner
box represents the portion currently displayed on the screen.
To view different regions of a magnified image, move the cursor into the inner box. Click
and hold down the left mouse button. The cursor changes to a hand; use it to drag the
box within the thumbnail until the desired region of the image appears on the screen.
Alternatively, use the scroll bars in the main image window to move the image up/down,
and left/right. On-screen Zoom tools are also available from the tool bar. These buttons
duplicate the Zoom tool in Tool Box, and also allows for Img Drag to easily pan
zoomed images.
Zoom icons in Tool Bar
Img Drag Icon in Tool Bar
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4.2 The Rotate / Flip Tool
The Rotate / Flip tools are found in the Tool Box. This function rotates the image in a
clockwise or counterclockwise direction by 1 degree increments up to a maximum of 90
degrees in either direction. This is a useful tool if the image is not aligned properly
during the capturing process.
The Rotate / Flip Tool
To rotate an image, click and hold down on the center sliding bar with the left mouse
button and move it left or right until the desired angle of rotation appears in the rotate
box. Release the left mouse button and image will rotate to the desired angle. To undo a
rotation, just click on the Undo button. Also, a Flip option allows for the image to be
rotated 180 degrees in a vertical or horizontal fashion.
The Reset button on the main software interface will also remove any rotations or image
flips and return to the display to the original image.
Rotated 12 degrees clockwise
Rotate / Flip box at 12 degrees
Image rotated -12 degrees
(Counterclockwise)
Rotate / Flip box at –12 degrees
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Image rotated 12 degrees
and flipped vertically
Rotate / Flip box at –12 degrees
and vertical flip button pressed
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4.3 Histogram
The histogram is a graphical display of the proportion of pixels assigned to each of the
image’s gray levels. This tool is found in the Tool Box.
Histogram display in the Tool Box
The image is made up of picture elements (pixels) having brightness levels ranging from
black to white. A very bright image will have most of its pixels registering high gray
levels and conversely, a very dark image will have most pixels with low gray levels
(approaching zero).
The histogram is displayed in the lower left corner of the screen, below the image
window. The horizontal axis represents the gray scale range: black at the left end and
white at the right end, with levels of gray in between. The number of pixels registering a
particular gray level determines the height of each bar along the axis.
A Coomassie blue-stained protein gel visualized with a white light box has a histogram
reflecting mostly bright pixels:
Histogram of a typical Coomassie gel
Most of the pixels are found in the light portion of this histogram. The dark bands
represent a small number of pixels and include a variety of gray values, and therefore do
not show up as a single peak.
The histogram function is particularly useful to verify that an image spans the maximum
range of gray levels. When an image is to be used for analysis, it is especially important
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that the gray level range be as large as possible. If an image does not include most of the
gray levels, we recommend repeating the image capturing process.
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4.4 Automatic Enhancement
The Enhance tool is found in Tool Box. This function is ideal for new or inexperienced
users of the system since it offers 9 levels of automatic image enhancement of the black,
white, and gamma levels simultaneously. For an inexperienced user, it can be difficult
to adjust each black, white, and gamma buttons to their respective optimal positions. By
clicking on one of the nine Auto Enhance Level buttons, the image is optimized
according to a unique level. Button 1 will make the image ‘darker’. Each increasing
button click will ‘lighten’ up the image until button 9 is pressed which will make the
image the ‘lightest’ possible.
The Enhance Tools
To undo any Auto Enhance Levels, just press on the Reset button on the main
interface.
Original Image
Auto Enhance Level 2 Image
Original Auto Enhance Tool Box
Auto Enhance Toolbox with level 2
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Auto Enhance Level 9 Image
Auto Enhance Toolbox with level 9
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4.5 Annotations
The annotation tools, found in the Tool Box, include a number of different options for
adding text (including Greek symbols), drawing arrows and otherwise marking an image.
Note that these tools are for annotation only.
Annotations Tool Box
4.5.1 Object Attributes
Use the COLOR, PEN WIDTH, PEN STYLE, LINE ENDS, TEXT STYLE and/or
TEXT ORIENT menus to specify object attributes. Attributes can be assigned to the
cursor before drawing or typing. Alternatively, they can be assigned to an object while it
is in “edit” mode (see the following pages for more details).
4.5.2 Annotation Colors
Annotations can be displayed in a variety of colors. The color options are displayed by
clicking the COLOR checkbox. To select a color, simply click the cursor on the button
labeled with the desired color. The color button appears depressed, indicating that it is
selected. Any annotations subsequently entered will appear in that color. It should be
noted, however, that annotations are printed in gray scale on the video printer. Further,
when an image is saved as a modified image, the annotations are saved in gray-scale, not
color.
Pen Color Selection Tools
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4.5.3 Line Thickness
The PEN WIDTH menu specifies the thickness of lines when using the freehand, lines,
box and circle drawing tools. Click on the appropriate checkbox for the desired width.
All annotations subsequently entered will appear at that width.
Pen Width Selection Tools
4.5.4 Line Types
The PEN STYLE menu specifies the style of lines when using the freehand, lines, box
and circle drawing tools. Click on the appropriate checkbox for the desired style. All
annotations subsequently entered will appear in that style. Note: these pen styles only
work with a thin line (see Line Thickness above).
Pen Style Selection Tools
4.5.5 Arrows and Straight Lines
The LINE ENDS menu specifies the style of the ends of straight lines (no arrow, single
arrow or double arrow). Click on the appropriate checkbox for the desired style. Note:
these line ends work with any line thickness.
Line Ends Selection Tools
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4.5.6 Text Background and Font
The TEXT STYLE menu specifies the style of text. Click on the appropriate checkbox to
show text with or without a background. An opaque background is useful if annotations
will be made on an image that has wide variations in gray scale. By using an opaque
background, text will not be “lost” in the background of the image.
Text Style Selection Tools
This is also the window in which specific font is chosen. When the Set Font button is
depressed, a selection box appears, from which text style can be chosen.
Font Selection Window
Note:
To choose Greek symbols (such as α, β, λ, π, and θ) choose the Symbol font:
a b c d e f g h i j k l m n o p q r s t u v w x y z
α β χ δ ε φ γ η ι ϕ κ λ μ ν ο π θ ρ σ τ υ ϖ ω ξ ψ ζ
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4.5.7 Text Angles
In the TEXT ORIENT window, select whether text should be oriented vertically,
horizontally, or at an angle (in 15° increments).
Text Orient Selection Tools
Note: only rotate fonts that are True Type (indicated by TT in front of the name); other
fonts (such as Courier and Fixedsys) do not re-scale properly, giving unpredictable
results.
4.5.8 The Drawing Tools
Once the object attributes have been defined, click the cursor on any of the drawing tool
buttons to assign the function associated with that button to the mouse. The cursor will
change from an arrow to a cross, indicating that ImageQuant Capture is in “drawing”
mode.
After selecting a drawing tool, move the cursor to the correct position on the image to
begin drawing. Press and hold the left mouse button and move the mouse to the end
point of the object to be drawn. Release the left button, and the object should now
appear.
Boxes will appear at the corners of the new object and the cursor will revert to an arrow,
indicating that ImageQuant Capture is now in “edit” mode. At this point, the object can
be resized or repositioned. The color, pen thickness, line type, etc. can also be changed,
simply by clicking on the desired choice (as described in Object Attributes above).
To draw another object, click the right mouse button to return to “draw” mode, or
click on one of the drawing tool buttons.
The button labeled with an "A" adds text to the image. Place the cursor at the
location on the image where the left edge of the text should appear. Click the left mouse
button and begin typing. To place another piece of text, click where it should be placed.
Once all text is entered, click on the right mouse button. To edit text, double-click on it.
An edit window will appear, in which changes can be made. To change fonts, see Text
Background and Font above.
The button labeled with a pencil icon allows the user to draw lines freehand. After
clicking on the pencil, move the cursor to the correct position on the image to begin
drawing. Press and hold the left mouse button. Using the mouse, move the cursor as if it
were a pencil. When finished drawing, release the mouse button.
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The button labeled with a diagonal arrow draws arrows and straight lines. After
clicking on the button, move the cursor to the position on the image where the line should
begin. Press and hold the left mouse button. Using the mouse, move the cursor to the
other end point of the line then release the mouse button. The arrow can be adjusted by
clicking on one of the boxes at the end (the other will serve as an anchor point) or by
clicking in the middle to drag the entire arrow.
The button labeled with a rectangle draws a rectangle or square of any size on the
image. After clicking on the button, move the cursor to the position that should
correspond to one of the corners of the rectangle. Press and hold the left mouse button.
Using the mouse, move the cursor to enlarge the rectangle. When it reaches the desired
size, release the left mouse button.
The button labeled with an oval draws a circle of any size. After clicking on the
button, move the cursor to the position on the image where the circle should be started.
Press and hold the left mouse button. Using the mouse, move the cursor to enlarge the
circle. When the circle reaches the desired size, release the left mouse button.
Hint: to draw a perfect circle around a portion of an image, first visualize a square
surrounding the area of interest. Position the mouse in the upper left hand corner of the
square. Click and drag the mouse down across the area of interest at a 45° angle until the
circle encloses the area of interest.
Sample Annotations
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Annotated image showing: freehand drawings, lines with various
characteristics, circles, squares, text with various characteristics
4.5.9 The Editing Tools
When the cursor is in “edit” mode, it can be clicked on an object to select it. (Note: the
cursor can be toggled between “edit” and “drawing” modes by clicking the right mouse
button.)
When an object is selected, small square boxes appear at the corners. Selected objects
can be resized, copied, deleted or moved:
• To resize an object, click on one of the gray boxes at the corners of its perimeter and
drag the box until the object reaches the desired size.
• To copy an object, use the Copy tool.
• To delete an object, use the Cut tool or the Eraser.
• To move an object, click within its boundary and drag it into the desired location.
To select more than one object, outline them with the mouse; any objects that fall
completely within the outline drawn will be selected. (Note: The entire object must be
enclosed by the cursor’s movement in order to be selected.)
A Selected Object
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Once an object or group of objects has been selected, clicking on the Cut tool
deletes it from the image.
The Copy tool makes an exact copy of the selected object. The new object
becomes the selected object, and can be repositioned by placing the cursor within the
object’s boundary and moving it to the desired location.
The Horizontal Alignment tool aligns annotations in a straight horizontal line.
This is especially useful for labeling lanes, etc. To use this tool, draw text on the image,
select it, click the Horizontal Alignment tool, then deselect the text. The text will now
be aligned in a straight line across the image.
Text Prior to Horizontal Alignment
Text after Horizontal Alignment
The Vertical Alignment tool aligns annotations in a straight vertical line. This is
especially useful for labeling markers, etc. To use this tool, draw text on the image,
select it, click the Vertical Alignment tool, then deselect the text. The text will now be
aligned in a straight line down the image.
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4.6 False Color
These tools consist of eleven pre-defined color palettes that can be applied to an image.
To select a palette, simply click on one of the four buttons labeled GRAY PALETTE,
SATURATION, NEXT or PREVIOUS.
False Color Selection Box
When a palette is selected, its range of colors is displayed to the left of the palette buttons
and automatically applied to the image. To apply a different palette to the image, click
the NEXT or PREVIOUS buttons.
Note: changes in Black level, White level and Gamma setting can alter the effect of
each of the palettes, and can enhance the results produced.
4.6.1 Gray Scale (Palette 0)
This is the default or standard gray scale, consisting of different gray levels, ranging from
black to white.
4.6.2 Saturation (Palette 1)
This is a modified gray scale palette in which black is replaced with green, and white is
replaced with red. Over- and under-exposed areas of the image are thus shown as green
or red, while areas within the linear range of the CCD chip are shown in gray scale. The
Saturation Palette is especially useful during quantitation, as areas outside the linear
range of the instrument do not give accurate quantitative information. This palette allows
the user to avoid those areas during quantitative analysis.
This palette can also be accessed by clicking the Show Saturation checkbox in the
Camera Setup and Preview function (accessible by clicking on the Camera icon in the
Tool Bar).
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4.6.3 Palettes 2 through 11
These are color substitution palettes in which the gray levels are translated into different
color ranges. These palettes can be useful to help distinguish features and highlight
details on an image.
Palette 2 maps the gray scale levels to a red/green/blue palette. Values of 0 are mapped
to red; saturated to blue, and values in between to green.
Palette 3 maps the gray scale levels to a red/green/blue palette. Values of 0 are mapped
to blue; saturated to green, and values in between to red.
Palette 4 maps the gray scale levels to a red/green/blue palette. Values of 0 are mapped
to green; saturated to red, and values in between to blue.
Palette 5 maps the gray scale levels to a cyan/magenta/yellow palette. Values of 0 are
mapped to cyan; saturated to yellow, and values in between to magenta.
Palette 6 maps the gray scale levels to a cyan/magenta/yellow palette. Values of 0 are
mapped to yellow; saturated to magenta, and values in between to cyan.
Palette 7 maps the gray scale levels to a cyan/magenta/yellow palette. Values of 0 are
mapped to magenta; saturated to cyan, and values in between to yellow.
Palette 8 maps the gray scale levels to a red palette. Values of 0 are mapped to dark red;
saturated to white, and values in between to shades of red.
Palette 9 maps the gray scale levels to a blue palette. Values of 0 are mapped to dark
blue; saturated to white, and values in between to shades of blue. This palette may be
useful when printing an image of a Coomassie-stained protein gel onto a color printer.
Palette 10 maps the gray scale levels to a green palette. Values of 0 are mapped to dark
green; saturated to white, and values in between to shades of green. This palette may be
useful when printing an image of a SYBR® Green I-stained protein gel onto a color
printer.
Palette 11 maps the gray scale levels to an orange palette. Values of 0 are mapped to
dark orange; saturated to white, and values in between to shades of orange. This palette
may be useful when printing an image of an EtBr-stained gel onto a color printer.
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4.7 Image Filters
ImageQuant Capture includes a variety of enhancement filters that can improve the
appearance of an image. Some filters sharpen details, others smooth and reduce random
noise. Still others help visualize edges and separate closely spaced bands or objects.
Depending upon the unique characteristics of an image, the results of each filtering
operation vary. Assess the characteristics of the image and then select the filter designed
to minimize its imperfections.
Filters Tool Box with 3-D (contour) selected
When an image is filtered, the original image information is replaced with the
results of the filtering operation. As a result, the original image information is
altered. To avoid losing the original image, save it as an original TIFF file before
applying a filter.
When the FILTERS button is selected in the Tool Box, a pop-up dialog box appears. If
the desired filter is not shown, choose MORE to display more filters. One or many filters
can be applied to a single image.
The Filters Tool Box with Sharpen highlighted
The Filters Tool Box with More selected
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4.7.1 General Information on How Filters Work
To enhance an image, filters change the value assigned to each pixel. The new value
assigned to a pixel is determined based on the values of the other pixels in its local
vicinity (or “neighborhood”). The neighborhood is a two-dimensional matrix of pixel
values, where each dimension has an odd number of elements. The "pixel of interest" is
the one at the center of the neighborhood. This is the pixel whose old value is being
replaced with a new one as the result of the filtering algorithm.
The pixels in a neighborhood provide information about the brightness trend. This
information is important to the filtering process. The brightness trend is also referred to
as the "spatial frequency." Images with high spatial frequency content contain large,
closely spaced changes in pixel values. For example, on a black and white checkerboard,
the smaller the squares, the higher the frequency content.
Images with low spatial frequency content (for example, images of clouds) contain large
areas of slowly changing pixel values.
Most of the filter options available (with the exception of the Noise filters) use a
weighted summation process to determine the value assigned to the pixel of interest. Each
pixel in a 3x3 neighborhood is multiplied by a "convolution kernel" having the same
dimensions. The resulting sum is assigned to the pixel of interest.
(K1xP1)+
(K2xP2)+
(K3xP3)+
(K4xP4)+
P1 P2 P3
K1 K2 K3
(K5xP5)+
P4 P5 P6
X
K4 K5 K6
(K6xP6)+
P7 P8 P9
K7 K8 K9
(K7xP7)+
(K8xP8)+
3x3 pixel neighborhoodconvolution kernel
(K9xP9)
(P5 is being calculated)
New Value for P5
Each element of the convolution kernel is a weighting factor, also called a "convolution
coefficient." The size and arrangement of these weighting factors determine the type of
transformation the image will undergo. Changing a weighting factor influences the
overall sum and, therefore, affects the value given to the pixel of interest.
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4.7.2 Sharpening Filters
These filters can increase image sharpness and provide edge enhancement. However
image noise may be enhanced as well. These filters accentuate the high-frequency details
of an image while leaving the low-frequency content intact. High frequency portions of
the image get brighter while low frequency portions become black.
Sharpen level 9 (high) has the largest effect on the image. Sharpen level 5 has an
intermediate effect. Sharpen 1 (low) has the most subtle effect on the image. 9 different
sharpening levels are available for optimization of the image.
4.7.3 Noise Filters
This filtering process uses the values of the pixels contained in the area surrounding a
pixel to determine the new value given to the pixel of interest. The noise filter sorts the
pixels in the neighborhood into ascending order and picks the middle or median pixel
value as the new value for the pixel of interest. 3 levels of noise reduction are available.
4.7.4 Despeckle Filters
The despeckle filter is a type of smoothing filter based on data rejection. Pixels in the
neighborhood (usually the adjacent pixels) are used as a data set upon which the average
and standard deviation of the set are calculated. If the pixel of interest (the center of the
neighborhood) is different from the neighborhood average (either greater or lesser) by a
threshold (a multiple of the standard deviation) it is replaced by the average value.
The effect of the filter is to "smooth" pixels that are much different from their neighbors.
Artifacts such as hot pixels, cosmic rays etc. are commonly rejected by this type of filter.
The filter strength is controlled by the threshold factor. For large factors very little data is
rejected as only very large deviations are required for rejection, where as, low thresholds
result in more smoothing. (For example, setting #1 results in outliers of 1 standard
deviation greater or lesser than the neighborhood average to be corrected for, setting #2
results in outliers of 2.5 standard deviations to be corrected for and setting #3 results in
outliers of 5 standard deviations to be corrected for.)
These filters are particularly effective in eliminating random noise contained in an image
and produce less blurring than the Noise filter described above.
4.7.5 3-D (Contour) Filters
These filters are particularly useful for visualizing faint bands. They produce a "3-D"
effect, defining edges and making details easier to see.
3-D level 9 (high) has the largest effect on the image. 3-D level 5 has an intermediate
effect 3-D level 1 (low) has the least effect on the image. 9 different 3-D levels are
available for optimization of the image.
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In addition, 3-D allows the user to control the ‘direction’ of the 3-D shadowing effect.
Once the level is refined, just click on a direction arrow to visualize the shadowing
adjustment. The default shadow direction is in the lower right hand corner direction and
9 different directions are available.
Original Image
3-D Image Level 5 & lower right
shadow
3-D Image Level 5 & upper
middle shadow
Original Filter Tool Box
Lower right shadow
Upper middle shadow
4.7.6 Smoothing Filters
These filters are very useful for reducing the visual noise present in an image. When a
smoothing filter is applied to an image, rapid changes in intensity are averaged out with
the remaining pixels in the neighborhood, thereby decreasing the high frequency content.
The visual result is a slight smoothing of the image because sharp pixel transitions are
averaged with their surroundings.
Smooth High has the largest effect on the image. Smooth Med has an intermediate
effect. Smooth Low has the most subtle effect on the image.
4.7.7 Edge Filters
These filters use Laplacian enhancement to highlight edges, regardless of direction. All
edge-enhancement operations attenuate the low frequencies of the image. Regions of
constant intensity or linearly increasing intensity become black as a result of these
transformations, and regions of rapidly changing intensity values are highlighted.
Note: The White level may need to be adjusted after using the Edge filters in order
to see the result of this filtering process.
4.7.8 Horizontal Edge Filter
This filter brightens horizontal edges. This can be useful in pinpointing bands on a gel.
The horizontal edge filter (Horz. Edge) enhances image edges by shifting an image
vertically by one pixel and then subtracting the shifted image from the original. In an
area of constant pixel intensity, the subtraction yields black pixel values. At an edge,
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which is an area with large changes in intensity, the subtraction yields light-colored pixel
values. The larger the difference in intensities, the lighter the resultant pixels.
Note: After applying the horizontal edge filter the entire image may appear
black, and might require reducing the White level in order to better visualize the
results.
4.7.9 Vertical Edge Filter
This filter (Vert. Edge) brightens vertical edges using the approach described for the
horizontal edge filter (see above), except that the image is shifted horizontally before the
shifted image is subtracted from the original. In this case, the vertical edges produce
light-colored pixel values. As in the horizontal edge filter, it may be necessary to adjust
the White level in order to better visualize the results of this filtering process.
4.7.10 Custom Filter
This function also allows the user to customize filters. Using the weighting factors of the
other filters as a frame of reference, it’s possible to experiment with new weighting factor
values.
4.7.11 The UNDO Button
The upper right button is labeled UNDO. This reverses the last filtering process applied
to an image.
Note: To revert the image to its original state after multiple filters have been
applied, press the RESET button on the main interface.
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4.7.12 Examples of Filter Results
Original Image
Noise Level 3 (High)
Sharpen Level 9 (High)
SmoothHigh
EdgeHigh
3-D (Contour) Level 5
Horizontal Edge
Vertical Edge
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4.8 FrameGrabber
If kinetic, multiplex, color, or chemiluminescence experiments are desired where you
wish to have the system automatically capture several images at preset exposure times,
preset time delay between images, preset lighting sources, and preset filter choices, the
FrameGrabber tab can be selected in the Tool Box. (FrameGrabber setup options are
also accessible in camera setup acquisition screen. To access this screen select the
acquire button on the tool bar and then select ‘FrameGrabber’ on the acquisition screen.
ImageQuant Capture standalone software does not include FrameGrabber acquisition
tools)
FrameGrabber Setup options in the Tool Box
FrameGrabber Setup button on
the Acquisition screen
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Once FRAMEGRABBER is selected, a display box will appear for independent control
of all lighting, filters, and exposure delay for each image frame.
The TOTAL FRAMES setup provides you with the ability to determine how many
individual frames (images) you want for the sequence. There is a maximum of 50 frames
(images) and a minimum of 1 frame
that can be captured with each
sequence.
The FRAME selection is used for
setting up the conditions for each
frame (image). For example, if
three (3) images are to be captured,
you would choose FRAME 1 and
setup all of the desired lighting and
filter requirements. You can then
click on FRAME 2 and repeat the
above. Or, you can click on COPY
TO NEXT to help speed up the
setup process. COPY TO NEXT
copies all settings from the previous
frame to the current frame. Usually,
for chemiluminescence imaging, all
lighting is off and the filter wheel is
positioned
for
the
chemiluminescence position for all
frames. Thus, the only variable that
is changing from one frame to the
next is the exposure time. In this
situation, COPY TO NEXT is a
useful tool to save time in the setup
process.
If you are performing kinetic experiments where you want to have a predetermined delay
between captured images, then you can use EXP DELAY to configure this function. The
default EXP DELAY is set for the shortest possible delay (19 milliseconds), but can be
configured up to 50 minutes between each image. Also, if your exposure delay and/or
exposure time and/or lighting options/filter position is consistent for the entire sequence,
then once you set up the first frame, you can select the COPY TO END selection to
automatically choose the first frame settings for the entire sequence of frames (images).
Once the sequence is set up for the desired configuration, click on the GO button. The
sequence will then begin the image acquisition for each frame of the image. When it is
complete, the Camera Setup and Preview window will disappear and the TOOL BOX
will automatically display the FrameGrabber tab. This will allow you to play back the
sequence, save or load the sequence, or record a new sequence.
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Once all images have been captured, the Tool Box will automatically display the
FrameGrabber tab. The buttons on this tab perform the following tasks:
REC
PLAY
STOP
PAUSE
REW (rewind)
REV (reverse)
FWD (forward)
DEL (delete)
LOAD
SAVE
Opens the Camera Setup and Preview window to record a
sequence.
Display a continuous loop of all of the captured images.
Stop the sequence at the current frame display
Pause the playback of the sequence at a user defined image
Rewind the sequence to the first image
Play the sequence in a continuous loop in reverse
Forward the sequence to the last image
Delete the sequence on the display. THIS FUNCTION WILL
NOT DELETE A SEQUENCE SAVED TO THE HARD DRIVE.
Load a previously saved sequence. THIS FUNCTION WILL NOT
LOAD INDIVIDUAL IMAGES PREVIOUSLY CAPTURED IN
NORMAL CAPTURE MODE.
Save a sequence of images.
4.8.1 Saving an Individual Image from a Sequence
After you load, play, and stop a sequence at the desired image, it is possible to save the
individual image seen on the screen. Use the SAVE AS button located on the tool bar to
save the image in the desired location and file format on the local or network drives.
Note: This will save the current image only. To save the entire sequence, select
the ‘save’ icon on the FrameGrabber tab in the tool box.
4.8.2 Loading/Saving an Entire Sequence
You can load or save an entire sequence by using the load and save icons in
the FrameGrabber tab in the tool box. When a sequence is loaded the loaded
frames will be seen as blue in the frame reel. When a sequence is saved a
dialog box will appear prompting you to select the location and name for the sequence
that you would like to save the images as.
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4.9 FrameGrabber: Save/Load FrameGrabber
Setup Routines
Two buttons “Save Setup” and “Load Setup” allow you to save and load all
FrameGrabber setup parameters. Files are saved as *.mvf files.
Save/Load Setup buttons
4.9.1 Frame Stacking
At the top of the FrameGrabber setup window is an option for stacking frames. If this
selection was chosen during acquisition of the image Stack Frames will use all previous
exposure information to sequentially add images to one another. Normal Sequence will
not perform this addition. Please note that stacking frames will increase the noise level in
acquired images.
Sample case:
Capture 5 frames at 1-5 sec exposure for total time elapsed 15 sec
Display after summation of following frames:
Frame 1 (1 sec)
Frame 2 (1 + 2 sec)
Frame 3 (1 + 2 + 3 sec)
Frame 4 (1 + 2 + 3 + 4 sec)
Frame 5 (1 + 2 + 3 + 4 + 5 sec)
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4.9.2 Capturing a Color Image Using the FrameGrabber Function
A color image can be generated by acquiring three images each taken with a red, green
and blue emission filter. Once saved, these images are then combined in the Overlay
pull-down menu. Open the image captured with each of the three filters as instructed and
a RGB (red, green, blue) true color image will be generated.
For color imaging, you will need to use the following optional filters:
Red Filter
SYPRO® Red Filter
Blue Filter
Hoechst Blue Filter
Green Filter
SYBR® Green Filter
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Chapter 5: Analyzing Images
Once you have acquired an image using ImageQuant Capture, you can transfer it to one
of ImageQuant TL’s analysis modules using the toolbar options. The ImageQuant
Capture toolbar contains 4 buttons: 1D, Array, Colony and Toolbox:
1D
This is a gel or TLC plate analysis module.
Array
The Array module to analyze microplate images, gridded
arrays, and dot and slot blot images.
Colony
The Colony Counter module can be used to analyze
images by detecting and measuring image features, 2D
spots, or colonies. You can display and print measurement
data from the detected colonies.
Toolbox
The Toolbox module allows you to perform analysis on a
wide variety of images. The flexible nature of this module
means that you are not restricted to a single type of
analysis when it is used.
If the acquired image has been saved, the selected module is immediately accessed when
the appropriate button is selected. If the image hasn’t been saved, there will be a prompt
to save it before the image is transferred from ImageQuant Capture to the appropriate
ImageQuant TL module.
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Appendix A: Opening ImageQuant
Capture Files in Other Software
Programs
Files generated by ImageQuant have been tested in the software packages below. For
successful imports, the command line is given.
Programs for the Macintosh® operating system were tested on a PowerMac® 8100/100AV.
Results may vary for different software versions and/or hardware configurations.
Adobe Photoshop 2.51 LE (Mac)
Adobe Photoshop 3.0 (Mac)
Canvas 3.5 (Mac)
Microsoft Word 6.0 (Mac)
Microsoft Word 6.0a (Win)
Microsoft Excel 5.0 (Mac)
Microsoft Excel 5.0c (Win)
NIH Image 1.59 (Mac)
.TIF
Open
.BMP
no
.GIF
Open
no
use
ResEdit*
Insert
Picture
Insert
Picture
no
Insert
Picture
Open
Open
no
Open
no
Insert
Picture
Insert
Picture
no
Insert
Picture
no
no
no
no
no
no
.MAC
Open
As/TIFF
.PCX
no
use
ResEdit*
Insert
Picture
Insert
Picture
no
Insert
Picture
Open
no
*For instructions on using ResEdit™, see next page.
Additional packages, such as Claris Works and PowerPoint have also been tested. For
these systems, it is necessary to save the file with a “.TIFF” extension in order for them
to recognize the file as a TIF format.
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no
Insert
Picture
no
Insert
Picture
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Using ResEdit
1. Save image in IS-1000/500 as a TIFF or MACTIFF
2. Obtain a copy of the freeware ResEdit by downloading from Apple Computers
through the Internet.
3. Open ResEdit. An animated startup display will show up and continue until you
click on the mouse or any key.
4. A dialog box will appear. Open the TIFF image. Another dialog box will appear
asking if you want to add a resource fork, click on ‘OK.’
5. Next go to the File pull-down menu and click on Get Info for This File.
6. In the File Info window, change the Type to TIFF (instead of TEXT), and the
Creator to DAD2 (instead of DOSA). (Must be typed in all CAPS as shown
here). Close the window and save changes. Quit ResEdit.
7. After this procedure, the icon will change to a TIFF icon and the file may be
opened in Canvas.
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Appendix B: Security Features
This feature should only be used by the purchaser or supervisor of the system. Remove
this page from the manual and store it in a safe place. When the system is shared by a
number of users, security features may be useful for regulating or maintaining a log of
instrument use.
To Change the Security Setup
When you initially receive the system, all security features are inactive and the user name
and password to access security settings are both set to "MASTER". To change the
security setup, select the Setup pull-down menu and click on Security. A dialog box will
appear asking for the system password:
Security Dialog Box
Enter the user name and password, and then click on the Login button. A new dialog box
will appear allowing you to configure your security preferences. By clicking on the
options in this dialog box, it’s possible for a supervisor to change the system password,
set the security mode, add and delete names from the authorized list, and activate the
Auto Logout feature. When the desired options have been selected, click the OK button.
Follow this procedure any time changes to the security mode are necessary.
Security Features Dialog Box
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NOTE: You must exit and re-launch ImageQuant Capture in order for any changes
to take place.
If you decide not to edit the security settings at this time, simply click on the EXIT button
to dismiss the dialog box.
Setting Various Security Levels
A variety of security levels are available. Each is described below, in increasing order of
security. Also shown are the proper settings in the dialog box to choose each security
level.
Option 1: No Security Functions
No log in or log out is required and anyone can use the system:
Option 2: Open System with User Name Log In and Out
This security level keeps the system open but requires users to log into the system by
typing a name. In this mode, a list of users with their log in and log out times is
generated.
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Each time a new name is used, it is added to the master user list. Since this list requires a
password (in case the system is later changed to a closed, password protected system),
ImageQuant will automatically assign the user’s name (in uppercase) as the password,
and the password field is disabled.
When finished using ImageQuant, the user can choose Logoff from the File menu, or can
log out by exiting the system. Otherwise, he/she will remain logged in (unless Auto
Logout is active).
Option 3: Open System with User Name and Password Log In and Out
This security level keeps the system open but requires users to log into the system by
typing their names and passwords. When someone enters a name and assigns a password
to that name, the same password is needed whenever that name is used to log in. Only
one password can be assigned to a name. A list of users with their log in and log out
times is generated.
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Option 4: Closed System with User Name Log In and Out
A user can log in only by entering an authorized name. A user log is generated.
In closed systems, the system supervisor may want to add or remove names from a list of
authorized users. To do this, click the Add/Remove Users button. A dialog box will
appear with a list of all the current users.
Option 5: Closed System with User Name and Password Log In and Out
The system only accepts authorized names and their passwords at log in. The system
supervisor can add or remove names from a list of authorized users as described above.
Only one password can be assigned to each name. A user log is generated.
Note: passwords are case sensitive (The login dialog defaults to uppercase but the
user can override this by pressing the shift key while typing.)
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