AMS CMV8000 CMOS Imaging Sensor Quick Start Guide
Reklam
Reklam
CMOSIS / AWAIBA is now
Member of the ams Group
The technical content of this CMOSIS / AWAIBA document is still valid.
Contact information:
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ams AG
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Please visit our website at www.ams.com
MityCAM-C8000
– MityViewer Quick Start Guide
The MityCAM-C8000 MityViewer Quick Start Guide will guide you through the software installation process and the steps to acquire your first image with the MityViewer application.
Contents
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MityCAM-C8000
– MityViewer Quick Start Guide
1 Revision History
Revision
Draft
1.0
1.1
1.2
1.3
Date
8/14/2014 Draft Release
Notes
8/22/2014 Initial 1.0 Release
2/10/2015 Added additional feature descriptions
3/12/2015 Added section on noise statistics and peak detect
4/06/2015 Added section on Playback/Record
2 Interface Options
2.1
Setup USB/RNDIS PC Adapter
All MityCAM-C8000 models feature the option to send image data over the USB 2.0 interface of the camera.
This communication occurs over a USB 2.0 Remote Network Driver Interface Specification (RNDIS) to a PC.
The camera is already configured to have an IP address of 10.1.47.2 for this interface and the PC should configure its corresponding RNDIS USB Gadget address to be 10.1.47.1.
This device should have been configured using the Hardware Setup Guide that was included with the
MityCAM. If this has not been performed yet, then please follow the steps outlined in that guide.
In addition to image capture with the MityViewer application the USB interface allows SSH access to the camera for configuration and debug activities.
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2.2
Gigabit Ethernet Enabled MityCAM Setup
MityCAM-C8000
– MityViewer Quick Start Guide
For MityCAM-C8000 cameras that feature the Gigabit Ethernet interface type configuration of the USB/RNDIS interface is not recommended for image capture as the Ethernet interface offers superior frame rate capabilities.
Each MityCAM is pre-configured to obtain an IP address from a DHCP server running on a network. If directly connecting to a PC a DHCP server would need to be run on the PC or the camera must be configured to use a static IP address instead. Please contact your Critical Link account representative for further details about how to make such modifications.
Once the camera and the PC are connected to the same DHCP enabled network no other configuration is necessary to communicate using the MityViewer application, once installed on the PC, Section 3.
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3 Install MityViewer Software
MityCAM-C8000
– MityViewer Quick Start Guide
The MityViewer is a Windows PC application which lets you setup and configure the CMV8000 sensor/camera as well as acquire and display image data. Follow the steps below to install the MityViewer application on your
PC.
Installing the application on your computer will create shortcuts to start it under the standard menus
(Start
Programs
Critical Link
MityCCD on a Windows based computer). During the installation, you will be able to select which plugin elements you wish to install. Some of the plugins are designed for factory and/or development use and will require keys to install. The default set should be adequate for the majority of users.
1.
Select the application (MityViewer_setup_2_X_X.exe) from the CD / DVD and then follow the prompts
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MityCAM-C8000
– MityViewer Quick Start Guide
Figure 1: Software License Information
Figure 2: All components are selected by default
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MityCAM-C8000
– MityViewer Quick Start Guide
Figure 3: Default installation location
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MityCAM-C8000
– MityViewer Quick Start Guide
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4 Acquire First Image
MityCAM-C8000
– MityViewer Quick Start Guide
This section discusses the steps needed to connect to the camera, launch the MityViewer software and acquire the first image.
4.1
Launch MityViewer
Launch the MityViewer software by going to the Windows Start menu and typing MityViewer. The program will start and the desktop will appear (Windows 7). Alternatively you can also find the application in your start menu under Start
Programs
Critical Link
MityViewer.
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MityCAM-C8000
– MityViewer Quick Start Guide
4.2
MityViewer
All key features of the Viewer are easily accessible via icons below the menu bar.
The status bar – displayed at the bottom of the window – shows a summary of camera / image acquisition status.
4.3
Launch Log Viewer
This dialog shows all the communication between the camera and PC and can assist in understanding overall operation. Click on the Log Viewer icon to launch the Log window.
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MityCAM-C8000
– MityViewer Quick Start Guide
4.4
Connecting to Camera
1.
Attach USB Cable (for RNDIS USB Gadget) from the PC to the camera if not already done
2.
Turn power on to the camera and you should immediately hear the fan turn on. Note, it takes the camera approximately 20 seconds to boot-up from a power-on cycle so you may need to wait 20 ~ 45 seconds to connect successfully. You should see a green status LED through the fan grill on the rear of the camera if it is running and “ready”.
3.
If the connection dialog is not open, then select the connection icon form menu bar
4.
Select
Ethernet
as the communication method
5.
Select
Scan for devices
button
6.
Wait for a few seconds and the camera S/N should appear on the
Found Cameras
drop down list. If the
Found Cameras
drop down list is empty, then select
Scan for devices
again. If you have multiple cameras on your network, then all
Found Cameras
should appear in this drop down list.
7.
Select the camera based on S/N. A printed label with S/N may be found on the back of the camera.
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MityCAM-C8000
– MityViewer Quick Start Guide
8.
Select
Connect
button and observe display on Log Viewer. If the connect fails initially, then select the
Connect
button a second time.
9.
Once the camera has successfully connected, then two green indicators will appear on the bottom right of the status bar. The right-most green indicator indicates connection to the camera. The indicator next to the left most indicator flashes green and indicates receipt of a periodic heartbeat message from the camera. A message indicating that the
Camera Connection Established
also appears on the bottom left.
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MityCAM-C8000
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10.
The periodic heartbeat message contains status information and some of the information may be shown by selecting the
Info
button.
11.
Currently the temperature sensory is not implemented for the MityCAM-C8000 and will report -199.9C in the MityViewer application.
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MityCAM-C8000
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4.5
Sensor Configuration and Calibration
1.
Select the
CMV Calibration
icon to display the
Calibration
Control Panel.
4.5.1
Mirroring
1.
If desired you can mirror the image over both the horizontal and vertical axes.
4.5.2
Gain/Offset
All settings in the Gain/Offset section directly manipulate the sensors registers.
1.
The programmable gain amplifier,
PGA
, can be set to one of 5 values; 1.0,
1.33 (default)
, 2, 3 and 4.
2.
ADC Gain
can be set to a value between 0 and 64 with
32 being the default
.
3.
Offset
is a digital bias on the data and can be set to a value between 0 and 2047 with
444 being the default
.
4.5.3
Registers
1.
If necessary it is possible to read and write registers within the MityCAM-C8000 camera itself through the Peek and Poke buttons. Note that it is possible to damage or cause the MityCAM-C8000 to become inoperable using this feature. An address or data must be provided in hex format.
4.5.4
GPIO
1.
The GPIO section of the CMV calibration tool allows the configuration of the 4 GPIOs accessible on the rear side of the camera. Please contact your Critical Link representative if a GPIO interface cable is needed as one is not included.
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Figure 4: CMV Calibration
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4.6
CMV Snapshot Control
MityCAM-C8000
– MityViewer Quick Start Guide
Select the
CMV Snapshot Control
icon to display the
Snapshot Control
Panel.
4.6.1
Background Subtraction
1.
Number of Frames
sets the number of frames that will be averaged together
2.
Measure
captures the specified number of background frames
To view the corrected image using the background subtraction select the Source -> Corrected Area option in the
Snapshot Display.
4.6.2
Test Pattern
1.
The
Test Pattern
feature is not yet implemented for the MityCAM-C8000 camera.
4.6.3
Number of Frames
1.
The
Number of Frames
option sets either the total number of frames captured upon press of the
Start
Capture
button if the
Continuous
check box is unchecked.
2.
If the
Continuous
check box is selected then the number of frames cannot be set as the camera will capture frames and transmit them to MityViewer as quickly as possible.
4.6.4
Timing
1.
When
HDR Interleaved Mode
each row of camera data will be captured at alternating exposure times based on
Exposure Time 1
and
Exposure Time 2
.
2.
Exposure Time 1
is used for all rows of data when
HDR Interleaved Mode
is not enabled.
3.
Exposure Time 2
is only available in HDR interleaved mode.
4.
The
Frame Interval Time [ms]
is the amount of time between two subsequent frame captures.
4.6.5
ROI
1.
Please reference
for details about using the ROI options.
4.6.6
Stop Capture, Image Info and Start Capture
1.
Stop Capture
causes the camera to stop sending image data to MityViewer. This should be used prior to changing any settings in the
Snapshot Control
panel.
2.
Start Capture
causes the camera to begin sending camera data using the settings specified in the
Snapshot Control
panel.
3.
Image Info
displays the settings used for the last image captured.
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Figure 5: Image Info
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4.7
Acquire Image
MityCAM-C8000
– MityViewer Quick Start Guide
1.
Select the snapshot icon to display the
Snapshot
Control Panel.
2.
Set
Number of Frames
to 1 and keep the
Continuous
check box unchecked.
3.
Set
Exposure Time
to 20 ms.
4.
Set
Frame Interval Time
to 1500 ms.
5.
Set
Single ROI
. The width should be 3360 and the height should be 2496.
6.
Select
Start Capture.
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MityCAM-C8000
– MityViewer Quick Start Guide
4.8
Display Image
1.
To view the Image Data, load a Snapshot Display. Click on the File
New
Snapshot Display menu.
2.
Select the
Raw Image
as the
Source Snapshot Display.
3.
Select
Scale Color to Data
checkbox.
4.
An image should appear on the
Snapshot Display
control panel.
5.
Adjust the lens iris and focus and select
Start Capture
on the
Snapshot
Control panel.
6.
You may also select
Continuous
on the
Snapshot
Control panel followed by
Start Capture
to continuously acquire images. Select
Stop Capture
to stop acquisition. Note, don’t make any changes to the
Exposure Time
or
Frame Interval Time
during continuous acquisition.
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5 Saving Image Data to File
MityCAM-C8000
– MityViewer Quick Start Guide
1.
You may save an image data as a CSV, TIFF or binary CDI format.
2.
Select File
Save and a dialog will prompt you for the file type.
3.
The file may be analyzed at a later time using MS Excel or another application.
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6 Select / Change ROI
MityCAM-C8000
– MityViewer Quick Start Guide
The ability to set the ROI for the MityCAM-C8000 can be found in the
Snapshot Control
settings dialog,
By default, the Region of Interest (ROI) is set to the maximum size of the sensor and only a single region.
CMV8000: 0,0 – 2496, 3360
You may also select multiple Regions of Interest. Up to a total of 8 different ROI regions may be set in the
MityViewer application. Each region has a specified Start X, Start Y, Width and Height.
1.
Use the
Regions
box to set the number of regions from 2 to 8
2.
For each
Region
that is enabled a set of settings will be available which can be set by changing the
Region N
drop down menu.
3.
For each
Region
a Start X, Start Y, Width and Height may be specified.
You may change the ROI by modifying the
Start Row / Column
and
End Row / Column
in the CIS
Snapshot
Control dialog. Note the following rules for changing the ROI:
Total Bytes = Width x Height x 2
Total Bytes = N x BL
N must be an integer number
BL must be evenly divisible by 8
32K <= BL < 64K
The simplest way is to use regions that are multiples of 16K pixels (e.g. 16x1024) or are less than 32K pixels in size
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7 Stream Image Data to PC / Laptop
1.
To view the Image Data, load a Snapshot Display. Click on the File
New
Snapshot Display menu.
2.
Select the
Raw Image
as the
Source Snapshot Display.
3.
Select
Scale Color to Data
checkbox
4.
Setup
Exposure Time
in the
Snapshot
Control panel
5.
Setup
Frame Interval Time
in the
Snapshot
Control panel. Ensure that the
Frame Interval Time
is at least 1500 ms for CMV8000 sensor (full ROI)
6.
7.
8.
Select
Continuous
on the
Snapshot
Control panel
Select
Start Capture
to continuously acquire images.
Select
Stop Capture
to stop acquisition. Note, don’t make any changes to the
Exposure Time
or
Frame Interval Time
during acquisition
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8 Stream Image Data to Internal Memory
1.
To view the Image Data, load a Snapshot Display. Click on the File
New
Snapshot Display menu.
2.
Select the
Raw Image
as the
Source Snapshot Display.
3.
Select
Scale Color to Data
checkbox
4.
Setup
Exposure Time
in the
Snapshot
Control panel
5.
Setup
Frame Interval Time
in the
Snapshot
Control panel. The
Frame Interval Time
can be set to any value greater than 1000 ms for CMV8000 sensor (full ROI)
6.
Unselect
Continuous
on the
Snapshot
Control panel
7.
Select Number of Frames to be greater than 1 (maximum is 20)
8.
Select
Start Capture
to continuously acquire images.
9.
Acquisition will stop after the number of frames has been acquired. The image data is captured at 20 frames/sec rate (Frame Interval = 1000 ms) and sent to the PC at a slower rate
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9 Record / Playback Images to / from disk
MityCAM-C8000
– MityViewer Quick Start Guide
1.
The MityViewer can be configured to stream received images to disk by using the
Playback / Record
dialog accessible via the main window
View
menu.
2.
The
Playback / Record
dialog supports recording TIFF files as well as a custom format named CDI
(continuous data inject). Select the desired format using the menu option next to the
file select button
,
.
3.
Select the
file select button
to choose a record file name that will contain meta-data information needed for playback. The location of this file also will include the image files stored to disk during a record session. If an existing recording is selected (for playback, or to overwrite), the number of images in the record session will be shown.
4.
To start recording, press the
record button
, . The dialog will prompt you if you will be overwriting an existing record set. Each image acquired is saved to disk before being passed to the rest of the application for processing.
5.
To stop recording, press the
stop button,
.
6.
To playback a record set, press the
play button
, . Images played back are injected as if they came from the camera DLL (before any application processing). During playback, the
play button
will change to a
pause button
, .
7.
To stop playback, click the
stop button
.
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10 Image Statistics
10.1
Image Statistics Dialog
The Image Noise Statistics dialog is shown using its icon on the toolbar. When the
Enable
box is checked, this dialog will compute image statistics on every acquired image. When acquiring images at high frame rates, you may need to disable this dialog to achieve the desired throughput (depending on your PC’s CPU). The dialog computes the image mean pixel value, the noise (std deviation) value, and shows how many pixels fall outside of 1,2,3, and 4 sigma from the noise value as a percentage. The nominal values for these percentages
(based on a Gaussian distribution) are shown to the right of the values). You can reduce the size of the considered area by adjusting the
X Margin
and
Y Margin
controls. These values are applied to both edges of the X or Y limits. The noise computation is a multi-pass operation. First it does a sliding window average (using the
Window
setting for the size of the window) across a row. Any pixel who’s value is more than
Peak Cutoff
counts above the average is discarded for the computation and the average of its one-away neighbors is used for the computation (the actual pixel data is untouched). Once this peak shearing operation is done, the line mean is computed and used to derive the noise figure. The running average noise and mean values are displayed next to the image mean and noise fields. Pressing the
Reset Averages
button clears the running average.
10.2
Plot Statistics
The Image Noise Statistics dialog can compute image statistics suitable for plotting using the plot display window. Clicking the
Generate
button will compute the following data sets:
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StdDev by Row
StdDev for each pixel in a row
StdDev by Column StdDev for each pixel in a column
Mean by Row
Mean value across a row
Mean by Column
Mean value along a column
Data by Row
Image data in a given row
Data by Column
Image data in a given column
FFT by Row
Histogram
FFT [1024 bin] of the data in a row
Image histogram.
Checking the
Auto
box will cause the dialog to compute image plot statistics for every image acquired. You may find this is too much for your CPU to handle.
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10.3
Important notes related to the Noise Statistic Plug-in
This plug-in was primarily developed to support internal testing of a number CCDs and CMOS arrays. The plug-n is available for customer use, but please note the following limitations, caveats, and definitions.
All of the statistics a developed using a local Area Mean matrix developed from the input image, X, and the specified kernel size of the noise statistics dialog. The equation for the Area Mean matrix is given by:
𝐴𝑟𝑒𝑎𝑀𝑒𝑎𝑛 𝑟𝑜𝑤,𝑐𝑜𝑙
=
∑ 𝑟𝑜𝑤+𝑘𝑒𝑟𝑛𝑒𝑙𝑠𝑖𝑧𝑒 𝑖=𝑟𝑜𝑤−𝑘𝑒𝑟𝑛𝑒𝑙𝑠𝑖𝑧𝑒
∑ 𝑐𝑜𝑙+𝑘𝑒𝑟𝑛𝑒𝑙𝑠𝑖𝑧𝑒 𝑗=𝑐𝑜𝑙−𝑘𝑒𝑟𝑛𝑒𝑙𝑠𝑖𝑧𝑒
(2𝑥𝑘𝑒𝑟𝑛𝑒𝑙𝑠𝑖𝑧𝑒 + 1)
2
𝑋 𝑖,𝑗
For the edge cases of pixels within the kernel size at the top, bottom, left or right edge of the image, the Area
Mean is computed using the kernel that fits within the image bounds. This means that the Area Mean matrix edge pixels are duplicated up to an offset of the kernel size.
Mean by Rows
The mean by rows option accepts a row number as a parameter. When this option is selected, a plot of ranging from col = 0 to the number of columns – 1 is generated from the Area Mean matrix using the requested row.
Mean by Cols
The mean by cols option accepts a column number as a parameter. When this option is selected, a plot of ranging from row = 0 to the number of rows – 1 is generated using the requested column.
Standard Deviation by Column
The “StdDev by Column” option accepts a column number as a parameter, but this parameter is not used. You should get the same plot for any column selected. When this option is selected, a plot of ranging from row = 0 to the number of rows – 1 is generated from the following:
𝑆𝑡𝑑𝐶𝑜𝑙𝑠 𝑟𝑜𝑤
= √
∑ 𝐶𝑂𝐿𝑆−10 𝑐𝑜𝑙=10
(𝑋 𝑟𝑜𝑤,𝑐𝑜𝑙
− 𝐴𝑟𝑒𝑎𝑀𝑒𝑎𝑛 𝑟𝑜𝑤,𝑐𝑜𝑙
𝐶𝑂𝐿𝑆 − 20
)
2
Standard Deviation by Row
The “StdDev by Row” option accepts a row number as a parameter, but this parameter is not used. You should get the same plot for any row selected. When this option is selected, a plot of ranging from col = 0 to the number of columns – 1 is generated from the following equation:
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𝑆𝑡𝑑𝑅𝑜𝑤𝑠 𝑐𝑜𝑙
= √
∑ 𝑅𝑂𝑊𝑆−1 𝑟𝑜𝑤=0
(𝑋 𝑟𝑜𝑤,𝑐𝑜𝑙
− 𝐴𝑟𝑒𝑎𝑀𝑒𝑎𝑛
𝑅𝑂𝑊𝑆 𝑟𝑜𝑤,𝑐𝑜𝑙
)
2
FFT
The FFT option accepts a row number as a parameter. A 1024 FFT is computed using the left most pixels along the row selected. If the number of columns available is less than 1024, then the FFT is zero padded. The data is displayed in dB (20*log10(magnitude)) scale. This was originally intended to detect periodic noise components in the data. It has not been modified to accommodate larger FPAs that have more than 1024 columns.
Comments
Some of the statistics operations exclude the outer left/right of the FPA. This was due to several legacy CCD sensors generating “special” columns that needed to be excluded for statistical analysis (e.g., several sensors generate optical and/or electrical dark columns that corrupt the statistics of optically active pixels). There were also some CCDs that included a bias on the first pixel due to how double correlated sampling was performing in the analog circuitry.
The results of our Noise Statistics plug in is used for several automated test procedures, so modification of the algorithms is possible but will require parameterization in order to maintain current functionality for legacy sensors.
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10.4
Peak Finder Dialog
MityCAM-C8000
– MityViewer Quick Start Guide
The Peak Finder dialog can be used to examine a row in an image to find the peak values. Click the in the toolbar to open this dialog.
icon
Figure 6 Peak Finder Dialog
Use the
Row
control to select which row to find peaks on (or select “Ave” to average all the rows in the image
[its one down from “0”]). The Number of Peaks control limits the number of peaks extracted. Only pixels whose value exceeds the threshold are considered in the peak processing. The Pixel value shown is interpolated using a centroid algorithm and thus is a floating point pixel equivalent. The Value shown is the pixel value of the peak from the image (not interpolated).
If the
Auto
button is checked the peaks are located for every image acquired, otherwise click the
Compute
button to populate the table.
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Critical Link, LLC PHONE 315.425.4045
6712 Brooklawn Pkwy FAX 315.425.4048
Syracuse, NY 13211 www.CriticalLink.com
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