ColorFacts User's Guide
ColorFacts is a system for analyzing the performance of video display devices. Graphs, histograms, and
meters (collectively called "Instruments") show your display's characteristics in an easy to read manner.
Wizards step you through common operations and video display tests.
ColorFacts was designed to be fast, accurate and easy-to-use and to support many different types of
display devices, hardware instruments, color systems and reference illuminants. The system is designed
to hide the complexity and mathematics of color science behind an easy to understand interface.
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Installing ColorFacts
ColorFacts is available electronically as a trial download from the ColorFacts Web site or on CD media.
If your computer is configured to AutoPlay CD media, you will see the following screen when you
insert the CD or launch the "autorun.exe" program from the download:
To install ColorFacts, click on the Install button from this introductory screen.
If you should need to manually run the ColorFacts product installation, you can execute the file named,
"SETUP.EXE", located in the \Install folder.
When the Setup program begins, a Wizard will extract the necessary files and place them on your
computer. Follow the instructions provided in the Wizard to install the program on your computer. You
will need approximately 15 MB of free space to install ColorFacts.
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Checking for ColorFacts Updates
Periodic updates to the ColorFacts application will be available via an Internet download. You can check
for a ColorFacts update from within the application by following these steps:
1. Click Start | Programs | ColorFacts | ColorFacts to start the program, if it is not already
running.
2. Once ColorFacts is open, click Help | Check for Update.
3. The Update Wizard will start and allow you to check the Internet for an update. If an update is
found, follow the instructions within the Wizard to install it.
Note: You may also allow ColorFacts to automatically check the Internet for updates on start-up by
selecting "Check for Updates Automatically Using the Internet" in the Options screen Preferences tab.
ColorFacts has this option turned on by default.
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ColorFacts Registration
ColorFacts uses one of two methods to control access: A hardware dongle which plugs into your
computer, or a license file which is sent to you when you activate ColorFacts.
Hardware Dongle
The Hardware dongle is required when you use ColorFacts with Minolta Instruments or if you request a
hardware dongle in place of the license file. If you use the hardware dongle, you are still encouraged to
register your version of ColorFacts with Milori so that you can receive product upgrades and technical
support. If you do not register, you will not be eligible for any technical support. To learn more about
registration process, see Registering ColorFacts - Security Dongle Method
License File
The license file methods is normally used if you are using the Trichromat or EyeOne Beamer color
meters. In that case, the color meters are like the hardware dongle and the license file contains key(s)
that are derived from the serial number stored in your color meters. If you have purchase more than one
copy of ColorFacts and you have more than one color meter, the license file that you receive will have
entries for all the color meters you own. This means that the license file can be copied to other
computers easily.
The license file is sent to your email account after you Activate your copy ColorFacts. The Activation
process will read the serial number from your meter and, along with other information you enter, will
send a request to the Milori Server for a license file. The license file will be generated for you if you
have a valid sales record on file. This sales record will then be updated with the serial number of your
color meter. You can request any number of license files for a single color meter, which means that
multiple people in your organization can share the product, but only one person can use it at any one
time. When you use ColorFacts, the system will check that the serial number of your color meter
matches a number in the license file.
To learn more about the Activating your product, see Activating ColorFacts - License File Method.
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Activating ColorFacts - License File Method
Once you have received your meter, you will need to run the ColorFacts Activation Wizard in order to
begin taking readings from an attached hardware device. The License is not normally distributed with
the software, whether it was purchased in CD form, from a reseller or delivered electronically
('downloaded'). Your License is specific to your hardware device.
You will need to obtain a License after you purchase the software to enable full functionality. The
process is quick and easy.
To Activate ColorFacts, follow these steps:
1. Install ColorFacts onto your computer by following the steps in the topic Installing ColorFacts.
2. Open ColorFacts through your Start menu. Click Start | Programs | ColorFacts | ColorFacts.
3. In the ColorFacts application, Click Help | Product Activation.
4. This ColorFacts Activation program appears like this:
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5. The next screen allows you to obtain your license file over the internet (immediately), or create
the e-mail message contents and send manually.
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6. You must select the meter you wish to activate ColorFacts with. If you have not purchased
ColorFacts or received your meter from Milori, Inc. you will not be able to complete the
remaining steps. Select the meter from the Select Meter: and click the Connect button. This
process will determine your meter's serial number which is needed for the activation process.
7. The next screen will allow you to activate more than one meter at a time. If you would like to
activate another meter select Yes, Please and click Next. This will take you back to the screen in
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step #6 (see step above).
8. Enter your contact information on the following screen:
9. If you chose to Request Your License over the Internet, verify your Full Name and E-Mail
Address and click Submit.
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10. Once you receive your license by e-mail from Milori, Inc. copy and paste the license information
into the initial screen (see Step 4) to activate ColorFacts.
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Registering ColorFacts - Security Dongle
Method
The Security Dongles come in two forms: USB and Parallel. Once you install ColorFacts, you will have
all the drivers necessary to run both forms of the Security Dongle. If at any time you need to Uninstall
or Re-install these drivers, you may do so by running the Rockey Driver Installation Program
(InstDrv.exe) which is located on your ColorFacts CD (in the Drivers folder) and your ColorFacts
installation directory (usually C:\Program Files\ColorFacts\Drivers).
USB Security Dongle
Parallel Security Dongle
Once you have received your security dongle, you will need to register ColorFacts in order to receive
technical support and product updates. With the Security Dongle you will be able to run ColorFacts on
any number of computers, but only one computer at a time.
To Register ColorFacts, follow these steps:
1. Install ColorFacts onto your computer by following the steps in the topic Installing ColorFacts.
2. Open ColorFacts through your Start menu. Click Start | Programs | ColorFacts | ColorFacts.
3. In the ColorFacts application, Click Help | Register.
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4. The next screen allows you to Register over the internet (immediately), or create the e-mail
message contents and send manually.
5. Enter your contact information on the following screen:
6. If you chose to Register Now Over the Internet click Submit to complete the Registration
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process.
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Uninstalling ColorFacts
If you should decide to remove ColorFacts from your computer, you can easily uninstall the software by
completing the following steps:
1. Click Start | Settings | Control Panel.
2. Select the Add/Remove Programs item.
3. Select ColorFacts in the list of programs to uninstall.
When you click the Uninstall button, ColorFacts and any other installed components will be
systematically removed.
User-created files (like graphic images and other files) may also be removed. If you do not wish to
delete your user-created files, you will need to manually move them.
You may also have drivers installed from one or more plug-and-play devices. To remove these,
complete the following steps:
1. Click Start | Settings | Control Panel.
2. Select System.
3. Select the Hardware tab.
4. In the list of devices, right-click on any plug-and-play devices that were used solely with
ColorFacts, right-click on the device and select "Uninstall" from the menu of choices.
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Reducing Ambient Light
For the best results, you may need to control the light that reaches the meter. The meter should only
"see" light that is coming from the display device that is going to be measured.
Make sure you reduce or eliminate all light sources other than the device being measured. This may
include covering windows, turning off lamps, monitors, other audio or video equipment, etc. Any
ambient light that might reach the meter during measurement should be eliminated to avoid incorrect
results.
Even small amounts of indirect lighting can affect the readings.
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Aiming the Meter
How do I aim the Meter?
Once your meter is in place, you may need to aim it to maximize the accuracy of your results. You may
skip this step if the meter is physically attached to the display device or if the meter is otherwise clearly
pointed correctly.
Front projection systems will obtain the most benefit from using this technique to aim the meter. To aim
the meter, click Measure | Aim Meter.
Once the meter is detected, the Luminance Instrument will appear and the meter will begin reading. You
will use the Luminance Meter to get feedback on your position and aiming of the meter.
The ColorFacts Luminance Meter.
Position the meter in the center of the Test Colors screen being displayed or the center of the displayed
image if you are using external video signals. Display an 80 IRE white field (80% Gray) for aiming the
meter.
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The ColorFacts Test Colors screen.
Adjust the position of the meter head until the Luminance is as high as possible. This will be the point
where the meter is pointed most directly back into the center of the display device.
When you are finished, click the Stop button that appears in the lower left corner of the Status bar. This
will take you out of the Aiming Sensor mode.
Note: You may also run ColorFacts using a "simulated meter" to see the features available. This allows
you to run the software without having the physical hardware attached. If the meter is not detected, you
will get a message box that allows you to choose to run with the "Simulated Meter".
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Measuring Device Primaries
You can measure your Display Device's primary colors (pure Red, Green and Blue) to determine how
the color compares to industry standards. You will see the coordinates of your Display Device's primary
colors plotted on top of the primary colors of the standard that is selected next to the words "Color
Reference" in the status bar of the application.
The triangle that is drawn encompasses all of the colors that your display device can produce (the "color
gamut"). In the example above, we can see that the Green primary is perfectly on the HDTV standard,
the Blue primary is just slightly larger than the standard, and the Red primary is signifantly larger than
the HDTV standard. Many display devices have a color gamut that is smaller than the selected standard.
More Accurate Calculations
In addition to plotting your display's primaries against a reference, the "Measure Device Primaries"
Wizard has a second purpose: To allow more precise calculations in ColorFacts. When you measure
your device primaries, ColorFacts will use those measured values in its calculations. The increase in
accuracy is normally rather small, but it can be important in an automated calibration.
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When you measure the primaries of a display, you determine the relative 'pull' on an achromatic (gray
scale) point toward the three respective corners of the triangular color gamut. With the RGB Histogram,
ColorFacts is displaying what 'pull' is required to bring the measured grayscale point(s) to the selected
target point (like D65). To determine the exact 'pull', you do need to know exactly where the primaries
are. However, exact pull isn't needed except in automated computerized calibrations, and any pull in
roughly the right general direction will be fine ("toward Red"), as you will be trying to get the white or
gray scale point to plot precisely on the target. For instance, ColorFacts would show 100%,100%,100%
for the RGB Levels.
Even if you do not measure the primaries of your display, the adjustments indicated will provide 'pull'
factors that show you how to reach the target point from the current values. If you would like the
percentages displayed to be precisely correct even when you are not close to 100%, 100%, 100%, you
can measure the primaries. Without measuring them, the percentages may be off slightly when far away
from 100%.
This will establish the color gamut that your display device will be able to create and will create the
framework for the calculations that the Wizard will need to perform later.
Simply stated: You do not need to measure the primaries of your display to have all of the features of
ColorFacts work properly.
See The ColorFacts Device Primaries Wizard for instructions on measuring your device primaries.
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The ColorFacts Training Wizard
1. Click Meter | Train Meter. The ColorFacts Meter Training Wizard opens. This Wizard will
allow you to teach one meter to return results that are similar to another meter. Typically, you
would train a lower quality meter to return the results of a higher quality meter, although
ColorFacts will allow you to train any supported meter with any other supported meter. To use
this Wizard, follow the remaining steps of this Help page.
2. Click Next at the introductory screen, if present.
3. In the step entitled "Before You Begin", verify that you meet the necessary requirements to run
this Wizard.
Most notably, the Meter Training Wizard will require you to have two separate meters available,
so that you may train one meter with the other.
4. Select what source you would like to use for test images in the "Test Image Source" step of the
Wizard.
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- If the computer running ColorFacts has its video output going into the display that you are
measuring, ColorFacts can generate its own test images to present on the display when you select
the "Generated by ColorFacts" source for the test images. The ColorFacts user interface itself
will temporarily disappear while these test images are presented, and will return when a reading
has been taken. Note that the quality of the test images generated by ColorFacts depend on the
quality of the video card in your computer.
- If you have a test image tape or disc (DVD), or a dedicated signal generator, select the option to
have the test images "Generated Externally". ColorFacts will offer some helpful information
on common sources of test images (like chapter and title indicators for common test image
DVDs), but for other sources it will be up to you to select and display the requested image.
5. Once you have decided on the source for your test images, you will need to select the meters to
train, and actually take the measurements.
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If ColorFacts is generating the test images, you will only need to select the Master Meter and
click the "Measure" button. ColorFacts will present the test images, measure them, record the
data and advance to the next step automatically.
If you are generating the test images with another source, you will need to select the meter to
serve as the Master, present 100% Red, Green, Blue and White fields and then click each of the
"Red", "Green", "Blue" and "White" buttons while the appropriate test image is being displayed.
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ColorFacts will record and display the coordinates for each reading. When the entire grid has
been filled in with data, click the "Next >" button to proceed.
6. Repeat a similar operation for the Apprentice Meter. The Apprentice Meter is the meter you
would like to train to match more closely the data coming from the Master Meter.
7. Once both meters have taken their measurements, the training of the Apprentice meter is
complete, and the training will be in effect immediately.
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If you wish, you may view the details of the Training, which are the raw numeric coefficients
that convert the data from the Apprentice Meter into the results from the Master Meter on the
display device for which they were trained.
8. When a Meter has been trained, your Meter menu and the menu from the Meter icon on the
status bar will change to reflect this fact. You will see a new "Clear Previous Training" item in
the menu that will allow you to immediately return to displaying raw data that has not been
transformed by the Training.
Note: The Training is in effect until you explicitly clear it, or until you close ColorFacts. You
should be aware that the data you are viewing is having a transformation applied before being
presented in the user interface.
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Using and Understanding Instruments
The ColorFacts "Instruments" are the various user-interface tools used in analyzing a display device.
This term is used to collectively refer to the meters, charts, and histograms contained in the Main
window. The various ColorFacts Instruments can be opened in two ways.
1. From the main menu, click Instruments. An icon in the selected state will indicate currently
opened Instruments.
2. If an Instrument is not opened, you may open it by clicking on the Instrument name in the menu.
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The ColorFacts Instruments will be described in detail in upcoming sections of the documentation and
include:
z
CIE Chart
z
Spectral Scan
z
Luminance Meter
z
Color Temperature
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RGB Levels
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Target
z
Luminance Histogram
z
Temperature Histogram
z
RGB Levels Histogram
z
Test Colors
z
Raw Color Data
Tip: You can also open or close Instruments using the ColorFacts toolbar, or by using the
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"SHIFT+FUNCTION KEY" keyboard shortcuts.
Click the button for an Instrument that is not open to open the Instrument. If the Instrument is open,
click the button for that Instrument to close it.
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Common Instrument Tasks
There are certain operations that all Instruments in ColorFacts can do. All Instruments can be saved as a
graphic, saved as data, reset or printed. You can also change the Properties of any Instrument. These
operations are available in the Context menu as well as the Main menu.
To access the context menu of an Instrument, right-click on the face of the Instrument and a menu of
choices will appear. Please see the individual topics below to find out more about a specific task.
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Resetting an Instrument
Selecting the appropriate choice in the Context menu can reset one or all of the Instruments.
For Instruments that show measurements over time like the CIE Chart and the Histogram Instruments,
resetting the Instrument removes the historical data and starts recording new historical data with the next
reading.
For non-historical Instruments, the Reset command simply clears the Instrument back to its default value
until the next reading. For example, resetting the Test Colors Instrument will return it to 100% white.
An individual Instrument or the entire collection of Instruments can also be reset through the appropriate
options in the Edit menu.
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Saving Instrument Graphics
Any of the Instruments can be saved to a graphics file by selecting the "Save [Instrument] As"
command from the Context menu. Graphics can be saved in the following formats:
z
Windows Bitmap (*.bmp) – Choose this format to retain the entire resolution of the Instrument in
the graphic file.
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JPEG File (*.jpg) – Choose this format if you intend to publish the Instrument graphics on the
Internet, as Web browsers natively support this format. You may lose a small amount of
resolution with this format.
After the Instrument contents have been saved to a graphic file, the graphic can be displayed on a web
page, imported into a document or used in a standard graphics editor application.
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Saving Instrument Data
You can save the data from many of the Instruments to a file for further examination or for importing
into another application. You can save Instrument data to a file by selecting the "Save [Instrument]
Data..." command from the File menu or selecting the "Save [Instrument] Data..." command from the
Context menu.
The data is saved in the following format:
z
Comma Separated Values (*.csv) – Each data element is separated by a comma. Multiple lines
(if present) are separated by carriage-return, line-feed character combinations (CRLF). This is a
common data exchange format and can be opened directly in Microsoft Excel and Lotus 1-2-3
spreadsheet programs among many others.
The information can be further analyzed and graphed by a database or spreadsheet application after
import.
For building automated or semi-automated calibration systems, you may want to consider using the
ColorFacts API directly or building a ColorFacts Macro that performs this task.
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Printing an Instrument
You can easily make a hard-copy printout of any Instrument by bringing up the Context menu and
choosing the "Print" option. The Instrument will be enlarged to fill the paper size chosen for the
printer. Depending on the colors chosen for the selected instrument, directly printing an instrument may
consume a fair amount of printer ink.
The "Print" and "Save" options are also duplicated in the traditional location in the "File" menu.
Detailed information on each of the Instruments are discussed in other sections.
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Instrument Properties
Instrument properties provide a way to specify or customize the behavior of one of the Instruments. The
properties are unique to each Instrument and can be accessed by right-clicking on the face of an
Instrument and choosing the "[Instrument] Properties" item from the context menu.
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The CIE Chart
In the general sense, the CIE Chart is used to represent the colors that people can see. The entire "Shark
Fin" display (which is everything in the ColorFacts CIE Chart Instrument except for the black
background) will contain all of the colors that are visible by a person with normal color vision.
The CIE Chart is used in ColorFacts to display the colors for a video color reference (like HDTV or
NTSC), as well as the gamut of colors that a display device can create. The coloration of a particular
reading will also be presented in the correct location on the CIE Chart, so an information-rich analysis of
the gray scale performance of a display is possible.
After measuring the Primaries of a display device (see Measuring Device Primaries) the color gamut of
the display device will be displayed as a triangle on the chart, which will be drawn over the top of the
selected color reference.
The larger the color gamut triangle, the more colors the display device is able to produce. You may point
your mouse at the corners of the color gamut triangle (or any other readings that are plotted on the chart)
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to see the chromacity coordinates for any of the primary colors. Chromacity coordinates are a numeric
way of representing a color using only the two variables "x" and "y".
From the color gamut triangle on the CIE chart, you will be able to determine how "rich" the colors will
be from a display. For instance, a Red primary that is too high on the chart will indicate that the display
device may only be able to produce an orange-red instead of a deep red. Similarly, a Green primary that
is too low may indicate that the display device will produce greens that are closer to yellow than what
may be desirable. A wide color gamut indicates that the device is able to produce rich, saturated colors.
You can select a standard color reference from the Status bar to see how the NTSC, HDTV or PAL
standards compare to your device's color gamut. The CIE Chart can also display standard white point
illuminants (like Illuminant A, B, C and D65) as well as the black body curve and correlated color
temperatures to provide a visual reference point for the plotted information. To display these additional
features, right-click over the CIE Chart and select CIE Chart Properties and check the boxes for the
features that you would like to see on the chart.
NOTE: If you want to compare the Reference color gamut to your device's color gamut, it is necessary
to ensure that a pure color source is output through the device. A Signal Generator is usually the tool of
choice to give an accurate reading of your device's color gamut. Consumer products such as DVD
Players and Computer Graphics will often not be accurate enough for providing a signal accurate
enough for critical comparisons.
When taking a reading from a display device, the CIE Chart will plot the point where the color lands
within the color gamut. One common use of this instrument is to adjust a display device to move an
achromatic (gray) point to one of the standard illuminants (typically D65). The dotted lines on the CIE
Chart represent the White Target that has been selected in the Status Bar.
Another common use of this Instrument is to visualize color shifts that may occur throughout the gray
scale range. This can be done most easily by using the The ColorFacts Gray Scale Wizard measurement
test. You will see all gray scale points simultaneously plotted with the darkest points closest to the
bottom of the stack of points and the lightest points closest to the top of the stack. The White point itself
will be displayed as a slightly larger point on the very top of the stack, as shown here:
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Since the CIE Chart plots color information without regard to luminance, a theoretical "perfect" display
would plot every point precisely at the intersection of the two target dotted lines, and would stack the
points so that all of the gray scale points were completely invisible behind the larger White point.
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CIE Chart Properites
CIE Chart Properties:
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Number of Points - Sets the number of points that are simultaneously displayed on the CIE Chart
before the oldest points begin to be removed. Set this value to "1" to only view the last reading
taken on the face of the CIE Chart.
z
Show Reference Points - Displays standard illuminants like A, C and D65 along with several
correlated color temperatures from 2,000º Kelvin to 10,000° Kelvin.
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Show Background - Displays the full color CIE Chart behind the plotted data. If this box is
cleared, the data will be presented on a white background, possibly more suitable for printed
publications.
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Black Body Curve - If you have chosen to display the full color CIE Chart background, you can
choose to also show the black body curve plotted on the background. The black body curve
displays the coloration that a black body will radiate when heated to the temperatures indicated on
the chart.
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The Spectral Scan
The Spectral Scan Instrument will display a graph of the spectral power distribution (SPD) in the visible
range from 380 to 780 nm for meters capable of returning this information. From the Spectral Scan, the
tristimulus values are calculated based on the standard observer selected in the Spectral Scan Properties.
Other Instruments in ColorFacts are updated from the tristimulus values that are calculated. The
Spectral Scan instrument displays a color correct graph of the spectral radiance as shown here:
If an instrument is not capable of returning spectral information, this Instrument will automatically
disappear from the ColorFacts user interface. It will automatically reappear if a spectral capable
hardware meter is connected.
This Instrument can be particularly helpful in determining why the Primary colors of a display (pure
Red, Green and Blue) do not plot at the expected coordinates on the CIE Chart. You may use this
Instrument to find that Green light is leaking into a reading of the Red primary, causing it to be an
incorrect chromacity.
The graphic or the raw data of the Spectral Scan can be saved by right-clicking on the Instrument and
selecting the appropriate option from the menu of choices.
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Spectral Scan Properties
The Spectral Scan Properties specifically establishes how to treat spectroradiometric data. It only
applies to hardware meters that return spectral radiance data.
Spectral Scan Properties:
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Standard Observer Model
You can select how to convert the spectral data to tristimulus values that represent the way that a
human with normal vision would see the spectral distribution. The choice depends on your
application of the data, and on the field of vision of the person who would be seeing the
measurement subject.
z
Scale (Y-Axis)
This setting determines how tall to make the graph in the Spectral Scan instrument. ColorFacts
normally scales all data so that you can see maximum detail in the spectral scan. To do this, the
peak value in the spectral distribution is scaled to the highest point on the graph. However, this
has the unintended side effect of taking low luminance scans and making them appear much larger
than they really are. To have all readings displayed on the same relative scale, you can choose the
second option.
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The Luminance / Illuminance Meter
The Luminance / Illuminance Meter will display the light output from the display device. If absolute
units are available from the connected meter, the data will be displayed with the unit shown. Otherwise,
the relative luminance will be displayed as a unitless quantity.
In addition, some meters report illuminance instead of luminance. If the connected meter returns
illuminance information, this Instrument will show itself as the "Illuminance Meter" instead.
If an arrow appears on the side of this Instrument, it indicates that the most recent reading from the
connected meter matched or exceeded the bounds of the meter's range. An up arrow indicates that the
meter is saturated, or receiving too much light, and a down arrow indicates that the meter is not
receiving enough light.
Even if the meter is receiving too much or too little light, it may still return data.
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Luminance / Illuminance Meter Properties
Luminance / Illuminance Meter Properties:
z
Text Color - Sets the color that the Luminance is displayed in on the face of this Instrument
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The Color Temperature Meter
The Color Temperature Instrument continually indicates the closest correlated color temperature (CCT)
of the most recent reading taken from the meter. Correlated color temperature refers to the temperature
(in Kelvin) that a black body radiator would need to be brought to in order to radiate the given color.
Not all colors have a corresponding correlated color temperature, but the Instrument is a very useful
guide for gauging colorimetry with respect to the Target White Point and the measurement has a long
history of use, so it is a rather familiar metric for many people.
In colorimetry, you will typically have a target illuminant (such as D65) or a target correlated color
temperature (such as 6,500) or both. The Color Temperature Instrument will indicate the closest
correlated color temperature to the color that is being measured.
If the correlated color temperature is greater than 40,000 degrees Kelvin or less than 2,000 degrees
Kelvin, the Instrument will display "> 40000" or "< 2000", and will remain that way until the CCT
comes into the 2000-40000 Kelvin range.
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Color Temperature Properties
Color Temperature Properties:
z
Text Color - Sets the color that the Color Temperature is displayed in on the face of this
Instrument
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The RGB Levels Meter
The RGB Levels Instrument continually displays the adjustments that would be necessary to make to the
Red, Green and Blue color output in order to reach the selected Target White Point.
The reference point for all three cylinders is 100%, which is indicated by a dotted gray line on the
Instruments. If an Instrument is above or below 100%, the cylinder will indicate the amount of
adjustment that is required to reach the target white point.
For example, if the Blue cylinder is at 106%, then Blue is 6% too high. This may be able to be adjusted
with controls on the display device. Some possible locations for this adjustment include settings titled
"Blue Gain", "Color", "Bias", "Gain", "Temperature", "Subcontrast", "Subbrightness", or within a lookup table containing information on converting input signals to output chrominance and luminance (also
possibly referred to as a "Gamma" table).
Adjusting one control may affect the others. In this example where Blue is indicated as being 106% (6%
too high), adjusting a control on the display device that moves Blue down 6% may also affect the Green
and Red slightly so that they need adjustment as well. The RGB Levels Histogram can be helpful in this
regard as that Instrument will show how the RGB levels are changing over multiple readings.
The goal of the RGB Levels Instrument is to get all three Instruments as close to 100% as possible with
an achromatic (non-colored) input signal, which will converge the display device to the selected target
white point.
If your display device only contains 2 settings for adjusting color (for instance, Red and Blue), you can
easily "lock" one color channel and prevent it from moving by simply dragging the "lock" icon and
dropping it on the bar you would like to lock. You can alternately right-click on the RGB Levels
instrument and make this change in the RGB Levels Properties. If you lock a primary color, the RGB
Levels instrument will automatically recalculate and rebalance the two remaining colors to show how
they will need to be adjusted to reach the target.
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RGB Levels Properties
RGB Levels Properties:
z
Lock Primary Color - Sets one of the colors to be "fixed" and unchangeable. ColorFacts will
automatically adjust the other two colors to compensate. You only need two color adjustments to
reach any specified target.
This option can also be set by dragging the Lock icon on the face of the Instrument to one of the
three Red, Green or Blue bars.
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The Target Meter
The Target Meter is an Instrument for helping to set an achromatic test image to a specified target
value. For instance, it can display the adjustments needed to bring the White point to D65. This
Instrument will display the location of the last meter reading taken on a chart that contains a border that
will indicate the dominant coloration of the reading.
There are two ways to display the Target Meter:
z
Three Axis CIE Chart
In this mode, the border of the Instrument will display the Red, Green and Blue primaries around
the outside edge and the diagonal lines will show approximate interpolated colors between these
primary colors. You will use this Instrument to make adjustments to the display in an attempt to
position the White button in the center of the Target. If the White button is too close to the Green
edge, you will want to decrease the amount of Green present (or increase the Red or Blue content,
which will "pull" the button in their respective directions). The central area represents the point at
which no coloration appears in the reading with regards to the selected target.
When you have positioned the White button within the central square, you have reached the
selected goal.
z
Two Axis CIE Lab Chart
In this mode, the border of the Instrument will contain four colors in a complementary color
configuration. The chart displays the Red-Green and Blue-Yellow values, graphically displaying
the CIE Lab coordinate system. This configuration may be less desirable than the R,G,B display
option unless you specifically need to work in CIE Lab coordinate space.
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As with the configuration above, the goal will be to move the White button to the central area.
When the button drifts too close to one color, you will want to decrease that color, or increase its
complementary color to center it.
In both modes, the Target will automatically zoom in as you approach the goal, making it easier to make
fine adjustments.
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Target Properties
Target Meter Properties:
z
Style - There are two primary ways to view this Instrument:
{
Three Axis CIE Chart
In this mode, the border of the Instrument will contain the Red, Green and Blue primaries.
You will use this Instrument to make adjustments to the display in an attempt to position the
White button in the center of the Target. If the White button is too close to Green, you will
want to decrease the amount of Green present (or increase the Red or Blue content, which
will "pull" the button in their respective directions). The central area represents the point at
which no coloration appears in the reading with regards to the selected target.
When you have positioned the White button within the central square, you have reached the
selected goal.
{
Two Axis CIE Lab Chart
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In this mode, the border of the Instrument will contain four colors in a complementary color
configuration. The chart displays the Red-Green and Blue-Yellow values, graphically
displaying the CIE Lab coordinate system. This configuration may be less desirable than
the R,G,B display option unless you specifically need to work in CIE Lab coordinate space.
As with the configuration above, the goal will be to move the White button to the central
area. When the button drifts too close to one color, you will want to decrease that color, or
increase its complementary color to center it.
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The Histogram Instruments
The Histogram Instruments display their information across readings or over time in a 'scrolling'
historical chart. New readings will appear on the right, and will scroll to the left as newer readings
replace them. These Instruments are similar to an EKG heart monitor in their appearance and operation.
The Histogram Instruments allow you to see how adjustments that you are making have affected the
image over time, or to see how the readings plot across a series of presented test images (for instance, in
the Gray Scale Wizard measurement series).
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The Luminance / Illuminance Histogram
The Luminance Histogram Instrument displays the luminance of the display device across readings, as a
percentage of the maximum luminance recorded. This Instrument is also used to graph the luminance
output across the gray scale as used in the The Gray Scale Wizard.
The Luminance Histogram indicates absolute black (darkness) at 0% luminance (at the bottom of the
chart) and the peak white at 100% luminance (at the top of the chart).
You can clear this histogram at any time by right clicking on the face of the Instrument and choosing
"Clear Luminance Histogram".
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When used with the Gray Scale Wizard, the Luminance Histogram will also present a dotted reference
line that indicates the luminance of an ideal gamma so you can easily determine where in the gray scale
the display is displaying too much or too little luminance. The reference line can graph a gamma curve
that "best fits" the actual luminance, or it can be fixed to graph a specified gamma factor. This option
can be changed in the Luminance Histogram properties.
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Luminance / Illuminance Histogram Properties
Luminance / Illuminance Histogram Properties:
z
Background Color - Sets the color of the background of the graph
z
Grid Color - Sets the color of the vertical and horizontal lines that create the grid of the graph. If
this is set to the same color as the background, the grid will be invisible
z
Line Color - The color used to graph the Luminance or Illuminance
z
Reference Color - The color of the dotted line used to represent the target luminance when the
target luminance is shown (i.e. After running the Gray Scale Wizard)
z
Reference Gamma - The gamma factor to use when drawing the dotted-line reference luminance
curve. The "Best Fit" option will choose the gamma factor closest to the actual gamma response
of the display, and the "Fixed At:" option will force a specific gamma factor to be graphed.
z
Smoothed Line(s) - Reduces angularities and jagged edges in a line graph. Selecting this option
only affects the presentation of the graph and does not affect the data.
z
Graph Red, Green, and Blue Separately - Graphs each primary color as its own line instead of
graphing the total luminance of the display. Normally luminance is graphed as a single line in this
Instrument.
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The RGB Levels Histogram
The RGB Levels Histogram displays the adjustments that would be necessary to perform in order to
reach the selected target white point across time or across readings. It is similar to the The RGB Levels
Meter with the added ability to display how the settings have been changing as adjustments have been
made, or the adjustments that would be necessary to make to reach the target across the gray scale.
Like the Luminance Histogram, the RGB Levels Histogram will display new readings on the right and
scroll to the left. When the display device is converging on the selected target white point, all three lines
in this graph (Red, Green, and Blue) will begin to hover around the 100% reference line.
This Instrument is also helpful for analyzing performance across the gray-scale from black to white, as
you will be able to see how uniformly the display device tracks the selected target white point (i.e. D65).
This Instrument is very helpful for focusing on color uniformity issues across the gray scale.
If the RGB Levels Instrument has had one of the colors "locked", then the RGB Levels Histogram will
be graphed with the same color locked. For more information on locking or unlocking a primary color,
see the topic on the RGB Levels Instrument.
The RGB Levels Histogram can be zoomed to give you a closer look at the data. You can Zoom the
graph of this instrument in several ways.
To Zoom This Instrument
z
Rotate the wheel of a scroll-wheel mouse. Rotate forward to Zoom in and rotate backward to
Zoom out.
z
Click the "+" (plus) or "-" (minus) keys to zoom in and out, respectively. These are
conveniently available on your numeric keypad.
z
Right-click on the Instrument and choose "Zoom [In/Out]" from the context menu.
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RGB Levels Histogram Properties
RGB Levels Histogram Properties:
z
Background Color - Sets the color of the background of the graph
z
Grid Color - Sets the color of the vertical and horizontal lines that create the grid of the graph. If
this is set to the same color as the background, the grid will be invisible
z
Reference Color - The color of the line used to display the 100% level, the target for the
individual Red, Green and Blue Levels.
z
Smoothed Line(s) - Reduces angularities or jagged edges in a line graph. Selecting this option
only affects the presentation of the graph and does not affect the data.
z
Graph Start Value - Determines the origin of the graph in relation to the gray scale. You can
choose to start the graph at 0% gray (black) up to 50% gray, in 10% increments. This setting can
be helpful to remove the low light level readings from the graph if your meter reaches a point in
its luminance range where it is no longer accurate. For example, you may choose to start the
graph at 30% gray if that is the point below which your meter is no longer accurate with your
display device. Note that all data is still retained, it is only the presentation of the graph which is
affected. If you were to save the data behind the graph, the full data set would be saved.
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The Temperature Histogram
The Temperature Histogram displays the correlated color temperature (CCT) across time or across
readings. It is similar to the Color Temperature Meter with the added ability to display how the
temperature is changing as adjustments are made.
As with the other Histogram Instruments, the Temperature Histogram displays new readings on the right
and scroll to the left and can be cleared, saved, or printed through the Context menu.
The Temperature Histogram can also be zoomed to give you a closer look at the data. You can Zoom
the graph of this instrument in several ways.
To Zoom This Instrument
z
Rotate the wheel of a scroll-wheel mouse. Rotate forward to Zoom in and rotate backward to
Zoom out.
z
Click the "+" (plus) or "-" (minus) keys to zoom in and out, respectively. These are
conveniently available on your numeric keypad.
z
Right-click on the Instrument and choose "Zoom [In/Out]" from the context menu.
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The zoom has a limited range which can not be extended.
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Temperature Histogram Properties
Temperature Histogram Properties:
z
Background Color - Sets the color of the background of the graph
z
Grid Color - Sets the color of the vertical and horizontal lines that create the grid of the graph. If
this is set to the same color as the background, the grid will be invisible
z
Line Color - The color used to graph the Color Temperature
z
Reference Color - The color of the line used to display the average temperature and the the dotted
line used to represent the target
z
Smoothed Line(s) - Reduces angularities and jagged edges in a line graph. Selecting this option
only affects the presentation of the graph and does not affect your data.
z
Graph Start Value - Determines the origin of the graph in relation to the gray scale. You can
choose to start the graph at 0% gray (black) up to 50% gray, in 10% increments. This setting can
be helpful to remove the low light level readings from the graph if your meter reaches a point in
its luminance range where it is no longer accurate. For example, you may choose to start the
graph at 30% gray if that is the point below which your meter is no longer accurate with your
display device. Note that all data is still retained, it is only the presentation of the graph which is
affected. If you were to save the data behind the graph, the full data set would be saved.
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The Test Colors Instrument
The Test Colors Instrument is a convenient way to generate test images from your computer that can be
measured with your meter. The instrument consists of a large, solid, resizable field of color, and buttons
across the top to allow you to choose the color to be displayed. A small arrow at the right of the colors
allows you to choose to display just an achromatic gray-scale palette of colors or an entire array of both
primary and secondary colors in 5 IRE increments.
A common technique is to position the meter in the center of the Test Colors Instrument, with any other
Instruments that you wish to use to analyze the image positioned around it.
You can use your arrow keys or the mouse to move among neighboring selections in the Test Images
Instrument.
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The Raw Data Instrument
The Raw Data Instrument contains specific scientific information that is generated during the display
device readings. Much of this information is presented graphically and more intuitively in the other
ColorFacts Instruments, so this Instrument will mainly be of interest only to the color professional.
However, if you have access to similar information from other devices, it can be helpful to make
numerical comparisons.
This Instrument displays data from the meter in a variety of color spaces, including XYZ (tristimulus
values), xyY (chromacity coordinates), RGB (Red, Green, Blue), CIE Lch (Lightness, Chroma, Hue),
CIE Lab, and CIE Luv. These color spaces are described briefly below:
z
XYZ - The values of the human eye's three responses to the color being presented.
z
xyY - CIE chromacity coordinates x and y are plotted on the ColorFacts CIE Chart. The Y value
corresponds to the luminance. These values are a "projective transformation" of the XYZ
tristimulus values.
z
RGB - The device independent chromacity coordinates x,y are converted to the RGB device
dependent color for the RGB values, and then scaled to the computer standard 256 unit scale. A
value of 255,0,0 means that the measured color is identical to the measured value of your Red
primary. A value close to 255,255,0 represents 100% of your Red primary combined with 100%
of your Green primary and the color would appear as Yellow. Note that these values are not the
RGB values of the displayed test pattern, but of the measured color.
z
CIE LCH - The color of the reading is displayed in levels of Luminance, Chroma and Hue
z
CIE Lab - The color of the reading is converted to the complementary axis CIE Lab space,
displaying the levels of Blue-Yellow (a) and Red-Green (b) with regards to a reference point.
Values of 0 and 0 for both a and b indicate that the reading is exactly on the target.
z
CIE Luv - The color of the reading is converted to CIE Luv space, which is a more uniform color
space than xyY.
z
Color - This area displays single-value indications of the color, including Correlated Color
Temperature (CTT) and Delta E.
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z
Luminance - Displays the single-value luminance of the reading.
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Selecting a Color Reference
The selected Color System and the White Point determine the mathematical transformations that are
used to display the graphical information in the Instruments. Properly selecting these two parameters
ensures the accuracy of the ColorFacts Instruments.
If you wish to compare the primaries of a device with a specified standard (such as NTSC, PAL, or
HDTV), you may select this Color System from the menu that appears when you select the Color
System option in the ColorFacts Status bar.
Specifying a Color System can also be a convenient way of measuring a device if you are sure that the
device corresponds closely with one of the standards listed. The Color System selection can be any one
of the following:
z
NTSC
z
PAL / SECAM
z
HDTV
z
NTSC (1953)
z
Manual Entry
Certain Instruments immediately show the effects of your selection of a Color System. Other
Instruments only display the effect of the choice as you begin to take readings. For instance, the CIE
Chart will immediately update to display the gamut of colors available in the selected Color System.
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The "Manual Entry" choice in the menu brings up the Primary Chromacities dialog that allows you to
type in the known chromacity coordinates of a color reference that is not listed in the menu.
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Selecting a White Target
The selection of a standard Illuminant to be used as the White Target determines the "reference" for
Instruments that converge upon a solution. The White Target is selected by clicking on the White Point
in the ColorFacts Status bar.
Several Instruments use the selected Target White Point to calculate adjustments that would be
necessary to reach the target. For instance, the RGB Levels Meter calculates the amount of Red, Green,
and Blue adjustment that would be necessary to reach the selected Target White Point.
Similarly, the Target Instrument displays the coloring present in the display based on the selection of the
Target White Point and movement that would be necessary to reach the Target White Point. In both the
RGB Levels Meter (above) and the Target Meter (below), you will see that there needs to be less blue
and slightly more red to reach the Target White Point.
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When you select a standard Color System (see Selecting a Color System), ColorFacts will automatically
set the White Point that is normally associated with that Color System. You may override the automatic
selection if you wish by selecting a different white point.
The D65 standard illuminant is a common Target White Point selection for video display device analysis
and calibration.
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Custom Color Reference or White Target
If the options in the Color Reference or White Target menus do not contain the option you would like to
use, you can manually enter the information for these options through this dialog. Under most
circumstances, this should not be necessary. It is convenient for the rare situation where you need to
customize how the product operates.
When the dialog first appears, the information that is displayed will be the current values of your Red,
Green, Blue and White point chromacities. If you have not already manually customized these points,
the values will come from the current selections for your Color Reference and White Target.
To use this dialog, you will type in the CIE x,y coordinates for the new desired primaries or white point
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target in the appropriate boxes. In addition, you can set the luminance for the White Target, which will
calculate the luminances for each of the primary colors based on the White Target luminance, and may
possibly set the target luminance for the Instruments in ColorFacts. The luminance values for the
primary colors can not be changed as they are calculated automatically.
The White Target can also be set directly in two different ways: from a Correlated Color Temperature
(CCT), or from a measured sample.
Setting the Target By Temperature:
You can set a custom Target from a Correlated Color Temperature (CCT) by clicking on the
"Set From Temp..." button and typing in the color temperature in Kelvin in the dialog that
appears.
The chromacity coordinates for the White point (CIE x,y values) will be calculated and the
luminances for the Red, Green and Blue primaries will automatically be recalculated.
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Setting the Target From a Sample:
You can set a custom Target from a measured sample by positioning your meter to take a
reading from a light source and clicking on the "Set From Sample..." button in the dialog.
You will need to confirm that you are ready to take the reading before the measurement will
begin:
Once you click "OK" in the dialog, the sample will be taken with the active meter, and the
Custom Color Reference dialog will be updated with the values from the measurement.
This is especially convenient if you are trying to match one display to another (see "MultiDisplay Options") or if you otherwise have a sample of what you would like to use for your
Target.
Note: You can configure ColorFacts to use the sample as a Target for both the color and the
luminance. For additional details, see "Multi-Display Options".
When you click "OK" in the dialog, all of the Instruments will update to indicate that the new White
Target is now the goal.
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Single Reading Mode
Select Single Reading from the Measurement menu to take one reading and display the information in
the ColorFacts Instruments and then stop. This is useful for taking a one-time snapshot of colorimetric
data for analysis, or for comparing two sets of data taken individually.
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Continuous Readings Mode
Select Continuous Readings from the Measurement menu to repeatedly take readings and update all
of the ColorFacts Instruments with the newly acquired data. The Histogram Instruments will scroll the
newly acquired data continuously, allowing a convenient way to assess the performance of various
adjustments of the display.
Continuous Readings is the recommended mode to use when making adjustments to your display
device, as feedback to your changes will be quick, clear and obvious. When a reading is being taken,
you may see an indication of the activity by the animation on the right-hand side of the toolbar (the
"throbber"), if you have enabled this feature.
You may be able to set the length of time that each reading takes when in Continuous Readings Mode in
the Exposure Time Options screen.
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The ColorFacts Dark Reading Wizard
The ColorFacts Dark Reading Wizard measures the signal that your hardware meter returns in the
absence of light. Since there is no light providing a valid signal to the meter, any signal that is being
returned from the electronics represents 'noise' and eliminating this invalid data will increase the valid
signal being returned from the hardware.
Not all hardware instruments need to have a Dark Reading, and the menu option will only appear for
meters that require the operation. The meter must be detected before the menu item will appear.
1. Before running the Dark Reading Wizard, make sure that no light can enter into the meter. You
may be able to position the sensor face-down on a table, press it into dark clothing or use a
specially designed device to help you take the Dark Reading. To open the ColorFacts Contrast
Wizard, click Measure | Dark Reading.
2. If the introductory screen appears, dismiss it by clicking "Next >".
3. With the meter in place, click "Finish". The Wizard will disappear when the Dark Reading is
complete. You may be notified when the Dark Reading has finished if you have not turned this
feature off.
4. Once you have taken the Dark Reading, you may use the meter to take Light Readings. You
may take a new Dark Reading at any time by repeating this process, and you may be prompted to
take a new Dark Reading periodically by the software.
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The ColorFacts Device Primaries Wizard
The Device Primaries Wizard measures the primary colors of your display device (pure Red, Green, and
Blue) to determine the "color gamut" of the device, which is the range of all colors that it will be able to
produce. The Wizard may also measure White and Black at the same time to determine the luminance
range of the device.
Once you have completed this Wizard, you will see the updated color space displayed in the CIE Chart
and how it compares with the selected Color Reference. Running this Wizard will make some of the
Instruments in ColorFacts more accurate, but this Wizard does not have to be run in order to calibrate a
display. For more information, see The CIE Chart Instrument.
To run the Device Primaries Wizard, complete the following steps:
1. Click on the Measure menu and select Device Primaries. The Device Primaries Wizard
opens.
2. Click Next from the introductory screen, if present.
3. If you have not done this already, you must set up your Meter before you continue. You may run
the Aim Meter test from the Measure menu to correctly position the meter for the most accurate
readings.
4. Next, make sure you reduce all light sources, other than the display device being measured. See
Reducing Ambient Light for details on how to do this.
5. Once you are ready to proceed with the Wizard, click Next.
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6. ColorFacts can generate the test images for this Wizard if you are using the display device you
wish to measure to run ColorFacts. If you are viewing this Wizard using the display device you
are measuring, click Yes to the prompt on the Determine Configuration step. If you are
viewing the Wizard using a separate computer, choose No, and the test images will need to be
generated externally. Click Next after you have made your selection. The latter choice is
available to you if you wish to use an external device to generate the test images for analysis.
7. Click Next.
8. If ColorFacts will be generating the test images internally, you will need to select how the test
images should be created:
„
Using the Windows Desktop (default) - This selection will create the test images
using the Windows GDI ("Graphical Device Interface") library. This is where
normal windows are located, and is commonly referred to as the Desktop.
„
Using a DirectX Surface - This selection will cause a new DirectX surface to be
created that changes the computer resolution and runs full screen. This is where
many games, software DVD players and other highly graphical programs run.
The choice of where the Test Images should be created will depend on your application.
Normally the two choices yield very similar, if not identical results. However, the two libraries
used for creating the test images (GDI and DirectX) have their own color and gamma settings
that may affect the results.
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9. You are now ready to begin measurements. When you click Finish, the test patterns will be
generated and measured. You will see Red, Green, Blue, White and Black images appear if you
are letting ColorFacts generate the test images. After these test patterns are measured, you will
be presented with the gamut of colors that your device can produce in the CIE Chart.
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The ColorFacts Contrast Wizard
The ColorFacts Contrast Wizard measures and displays your display device's white and black level.
From these readings, the device's Contrast Level will be calculated and displayed.
1. Before running the Contrast Wizard, you may wish to ensure that your hardware meter has been
recently calibrated to maximize the accuracy of the measurement. To open the ColorFacts
Contrast Wizard, click Measure | Contrast.
2. Click Next if the introductory screen is present.
3. Once again, make sure your ColorFacts Meter is pointed directly at the display device.
4. Make sure all other ambient light sources are off. This includes lamps, computer screens, etc.
(see Reducing Ambient Light for more information).
5. Click Next when you are ready to begin.
6. ColorFacts can generate the test images for this Wizard if you are using the display device you
wish to measure to run ColorFacts. If you are viewing this Wizard using the display device you
are measuring, click Yes to the prompt on the Determine Configuration step. If you are
viewing the Wizard using a separate computer, choose No, and the test images will need to be
generated externally. Click Next after you have made your selection.
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7. The "Select Testing Technique and Begin Test" screen allows you to choose the contrast test
technique, "Modified ANSI Checkerboard" or "Full On/Off."
„
ANSI Checkerboard (Modified) -- maintains a medium average picture level
(APL) in the test image. The normal 4 x 4 (16 square) ANSI checkerboard will be
offset 12.5% so you will not have to move the meter between the light and dark
reading.
Note: This is not an actual ANSI technique for measuring contrast. The standard ANSI technique involves measuring each of the
squares in the checkerboard pattern and averaging the readings before calculating the contrast. However, this does provide a contrast
reading from two sequential images that have a medium APL and helps ensure that the meter is in the same exact position for each
reading.
„
Full On/Off -- sequential full black and white fields are used for the contrast
measurements.
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8. If ColorFacts will be generating the test images internally, you will need to select how the test
images should be created:
„
Using the Windows Desktop (default) - This selection will create the test images
using the Windows GDI ("Graphical Device Interface") library. This is where
normal windows are located, and is commonly referred to as the Desktop.
„
Using a DirectX Surface - This selection will cause a new DirectX surface to be
created that changes the computer resolution and runs full screen. This is where
many games, software DVD players and other highly graphical programs run.
The choice of where the Test Images should be created will depend on your application.
Normally the two choices yield very similar, if not identical results. However, the two libraries
used for creating the test images (GDI and DirectX) have their own color and gamma settings
that may affect the results.
9. Click Next. The Contrast Wizard will begin taking the measurements.
10. Once the Wizard has finished taking the required measurements, you will be shown the black
level and white level readings from your display device, and your calculated contrast will be
displayed in bold numbers at the top of the results box. The results may be displayed with units
if the active meter returns absolute luminance information.
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11. When you click Finish, the Contrast Wizard will close.
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The ColorFacts Gray Scale Wizard
One of the primary objectives in a well-calibrated video system is a gray scale that properly tracks from
black to white (0 to 100 IRE) without tint from other colors, and a gamma that outputs the correct
luminance from a given incoming video signal. The measurement of gray scale linearity and luminance
is the purpose of the ColorFacts Gray Scale Wizard.
1. Click Measure | Gray Scale. The Gray Scale Wizard opens.
2. Click Next at the introductory screen, if present.
3. Make sure your meter is pointed directly at the display. For instructions on positioning the meter,
see Aiming the Meter.
4. Turn off any other light sources. Refer to the section, Reducing Ambient Light for additional
information.
5. Click Next when ready.
6. ColorFacts can generate the test images for this Wizard if you are using the display device you
wish to measure to run ColorFacts. If you are viewing this Wizard using the display device you
are measuring, select Generated by ColorFacts to the prompt on where you would like the test
images to come from on the Test Image Source step. If you will be using another source of test
images, select the Generated Externally option, and use your external source to create the test
images when prompted by the Wizard (see Test Image DVD Titles and Chapters). Click Next
after you have made your selection.
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7. Choose which gray scale test you want to run. For a faster test, you may choose fewer gray scale
levels. For a more detailed test, you may choose one of the tests with more gray scale levels.
IRE Levels (10 readings) – Measurements will be taken at 0, 10, 20, 30, 40, 50, 60, 70, 80, 90
and 100% white (IRE). With the 0 IRE reading, this will actually result in a total of 11 test
images being measured.
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IRE Half Steps (20 readings) -- This is the default Gray Scale Test. It will measure the gray
scale at every 5% brightness change in the achromatic (gray) scale. Including the 0 IRE reading,
this will actually result in a total of 21 test images being measured.
Detailed Test (32 readings) – 32 gray scale levels will be measured with the detailed test. In
addition to the 0 IRE reading, this will result in a total of 33 test images being measured.
Very Detailed Test (64 readings) – The very detailed test will use 64 gray scale levels to
measure the gray scale tracking. In addition to the 0 IRE reading, this will result in a total of 65
test images being measured and will take approximately 4 minutes to complete.
Display Fields Within a Frame - The gray scale test images can be displayed in a black frame
to bring down the APL (average picture level).
8. Click Next when you have selected the test that you would like to perform and any associated
options.
9. If ColorFacts will be generating the test images internally, you will need to select how the test
images should be created:
„
Using the Windows Desktop (default) - This selection will create the test images
using the Windows GDI ("Graphical Device Interface") library. This is where
normal windows are located, and is commonly referred to as the Desktop.
„
Using a DirectX Surface - This selection will cause a new DirectX surface to be
created that changes the computer resolution and runs full screen. This is where
many games, software DVD players and other highly graphical programs run.
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The choice of where the Test Images should be created will depend on your application.
Normally the two choices yield very similar, if not identical results. However, the two libraries
used for creating the test images (GDI and DirectX) have their own color and gamma settings
that may affect the results. For most situations, the default "Windows Desktop" choice will
render the fastest and be the best choice.
10. The Gray Scale Wizard has all the information it needs to begin taking measurements. When you
click Finish, the gray scale measurements will begin. You will see shades of gray appear
sequentially on your display device. As each level is measured, the next level will be presented.
11. After all of the levels are measured, you will have the option to Save your results as Original
Analysis or Final Analysis. You can use this data to run reports against using the ColorFacts
Reporting Wizard.
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12. The Original Analysis or Final Analysis data will be stored as calibration information for a
customer. You may save multiple calibrations per customer.
Select a customer from the list to save your gray scale results to. You can also add a new
customer from this screen by selecting --New Customer-- from the Select Customer dropdown
(see Customer Address Book for more information).
After running the Gray Scan Wizard, you will be shown several Instruments that allow you to analyze
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the results of the gray scale tracking test.
The Temperature Histogram shows the color temperature across the grayscale.
Black is on the left of the chart, and white is on the right.
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The CIE Chart shows where the gray scale points plot on a 2 dimensional scale.
A perfect gray scale has all points stacked up exactly on top of each other, at the coordinates of the target illuminant
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The Luminance Histogram shows how luminance plots across the grayscale.
After running the Grayscale Wizard, the Luminance Histogram displays your display's gamma response as related to a reference.
The RGB Level Histogram shows how your device's RGB Levels plot across the grayscale.
After running the Grayscale Wizard, the RGB Level Histogram displays your display's gamma correction function.
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The ColorFacts Brightness Uniformity Wizard
The ColorFacts Brightness Uniformity Wizard measures the variance between the center and the corner
of your display and calculates the uniformity in the brightness across the image. A brightness uniformity
ratio of 75% is considered good and uniformity over 85% is excellent. Digital projectors tend to have
less of a brightness uniformity roll-off than CRT based projectors.
1. Open the ColorFacts Brightness Uniformity Wizard, click Measure | Brightness Uniformity
Wizard.
2. Click Next if the introductory screen is present.
3. Make sure your meter is pointed directly at the display device. See Aiming the Meter for
additional information on making sure that the meter is positioned correctly.
4. Make sure all other light sources do not reach the meter. See Reducing Ambient Light for more
information.
5. Prepare to move the meter. You will need to physically move the meter during the Brightness
Uniformity Wizard to take a reading from a corner of the display.
6. Click Next when you are ready to begin.
7. ColorFacts can generate the test images for this Wizard if you are using the display device you
wish to measure to run ColorFacts. If you are viewing this Wizard using the display device you
are measuring, click Yes to the prompt on the Determine Configuration step. If you are
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viewing the Wizard using a separate computer, choose No, and the test images will need to be
generated externally. Click Next after you have made your selection.
8. If ColorFacts will be generating the test images internally, you will need to select how the test
images should be created:
„
Using the Windows Desktop (default) - This selection will create the test images
using the Windows GDI ("Graphical Device Interface") library. This is where
normal windows are located, and is commonly referred to as the Desktop.
„
Using a DirectX Surface - This selection will cause a new DirectX surface to be
created that changes the computer resolution and runs full screen. This is where
many games, software DVD players and other highly graphical programs run.
The choice of where the Test Images should be created will depend on your application.
Normally the two choices yield very similar, if not identical results. However, the two libraries
used for creating the test images (GDI and DirectX) have their own color and gamma settings
that may affect the results.
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9. The Wizard is ready to take the center reading of the display device. The meter should already be
positioned in the center of the display. When the meter is positioned, click Next to take the
reading.
10. It is now time to position the meter in one corner of the display, or where the display appears
darkest. When you have the meter positioned, click Next to take the corner reading as well.
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11. You will be shown the results of the Brightness Uniformity test after the corner reading has been
taken. You will see the light output in the corner and in the center of the display and the
uniformity will be calculated and displayed. The results may be displayed with units if the
selected device profile contains absolute luminance information.
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12. When you click Finish, the Brightness Uniformity Wizard closes.
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External Test Pattern Locations
ColorFacts can use external test images for performing the display device analysis. A popular source for
the external images is a DVD containing test images. To make navigation convenient, we have listed
the Titles and Chapters that you will need to use with ColorFacts in the pages listed below. You may
wish to print out the page corresponding to your test DVD for convenience.
Test Pattern Reference Information:
z
Avia
z
ColorFacts Test Patterns
z
Peter Finzel Test Disc
z
Video Essentials
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Avia Test Disc
DVD Titles and Chapters
Device Primaries:
Test Image Title Chapter
100 % Red
Title 4
Chapter 18
100 % Green
Title 4
Chapter 17
100 % Blue
Title 4
Chapter 20
Gray Scale Levels (Framed):
Test Image Title Chapter
10 % Gray
Title 1
Chapter 13
20 % Gray
Title 1
Chapter 14
30 % Gray
Title 1
Chapter 15
40 % Gray
Title 1
Chapter 16
50 % Gray
Title 1
Chapter 17
60 % Gray
Title 1
Chapter 18
70 % Gray
Title 1
Chapter 19
80 % Gray
Title 1
Chapter 20
90 % Gray
Title 1
Chapter 21
100 % Gray
Title 1
Chapter 22
Gray Scale Levels (Full):
Test Image Title Chapter
10 % Gray
Title 5
Chapter 24
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20 % Gray
Title 5
Chapter 25
30 % Gray
Title 5
Chapter 26
40 % Gray
Title 5
Chapter 27
50 % Gray
Title 5
Chapter 28
60 % Gray
Title 5
Chapter 29
70 % Gray
Title 5
Chapter 30
80 % Gray
Title 5
Chapter 31
90 % Gray
Title 1
Chapter 32
100 % Gray
Title 1
Chapter 33
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ColorFacts Test Patterns
ColorFacts Test Patterns is an external program that you can use to generate various test patterns. Some
of the patterns available in this program are:
Contrast Adjust
Brightness Adjust
Step Gradiant
PAL PLUGE
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NTSC PLUGE
Split Color Bars
Ansi Checkerboard
Ansi Checkerboard (Modified)
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Cross Hatch
Cross Hatch (Modified)
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Peter Finzel Test Disc
DVD Titles and Chapters
Device Primaries:
Test Image Title Chapter
100 % Red
Title 3
Chapter 2
100 % Green
Title 3
Chapter 4
100 % Blue
Title 3
Chapter 6
Gray Scale Levels:
Test Image Title Chapter
10 % Gray
Title 5
Chapter 5
20 % Gray
Title 5
Chapter 6
30 % Gray
Title 5
Chapter 7
40 % Gray
Title 5
Chapter 8
50 % Gray
Title 5
Chapter 9
60 % Gray
Title 5
Chapter 10
70 % Gray
Title 5
Chapter 11
80 % Gray
Title 5
Chapter 12
90 % Gray
Title 5
Chapter 13
100 % Gray
Title 5
Chapter 14
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Video Essentials Test Disc
DVD Titles and Chapters
Device Primaries:
Test Image Title
Chapter
100 % Red
Title 18
Chapter 16
100 % Green
Title 18
Chapter 17
100 % Blue
Title 18
Chapter 18
Gray Scale Levels:
Test Image
Title
Chapter
Black
Title 10
Chapter 13
20 % Gray Window
Title 17
Chapter 33
30 % Gray Window
Title 17
Chapter 34
40 % Gray Window
Title 17
Chapter 36
50 % Gray Window
Title 17
Chapter 38
60 % Gray Window
Title 17
Chapter 40
70 % Gray Window
Title 17
Chapter 42
80 % Gray Window
Title 17
Chapter 44
90 % Gray Window
Title 17
Chapter 46
100 % Gray Window
Title 17
Chapter 48
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Customer Address Book
The Customer Address Book allows you to save calibration information for each of your customers.
Some of the features of the Customer Address Book include: add/remove customers (see Adding a New
Customer), customer searching, saving multiple calibrations (ColorFacts Gray Scale Wizard) per
customer, adding calibration notes, generate new reports (ColorFacts Reporting Wizard), and view
saved reports (reports exported to PDF format).
You can search for existing customers by typing the customer's name into the Type Name or Select
from List textbox. As you type each letter you will see the customer(s) that match your search criteria
appear in bold. You may double-click, or select Properties to view details about the selected customer
(see Working with Customer Data for more information).
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Adding a New Customer
Before you can save gray scale results or generate reports, you must first create a customer. You can
add a new customer to your Customer Address Book by selecting New Entry from the file menu or
clicking on the New Entry icon in the toolbar.
You can also add a new customers directly from the ColorFacts Gray Scale Wizard. When prompted to
select a customer, you can choose --New Customer-- to create a new customer on the fly.
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Working with Customer Data
Once you save a customer in your Customer Address Book, you can view or change their information at
any time. You can also save new Gray Scale results or replace existing Gray Scale results for that
customer. Some of the features that are available are: change general information (name, address,
phone, e-mail), and view\delete calibration data (Gray Scale readings).
You can view detailed calibration results by selecting the calibration from list and clicking the View
button. You can re-generate a report by clicking on the Run Report button. This will launch the
ColorFacts Reporting Wizard which will walk you through the steps of generating the report. You can
view saved or exported reports (only available If you have previously exported a report to PDF from the
Report Preview screen) by clicking on the View Report button. You must have the Adobe Acrobat
Reader installed on your computer before viewing PDF reports. This program is available on your
ColorFacts CD.
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The ColorFacts Reporting Wizard
The Reporting Wizard will allow you to select, create and print (or save) a report based on previously
recorded data. You must run the Gray Scale Wizard to record the data needed in all reports before
trying to access this feature.
To create a report using the ColorFacts Reporting Wizard, follow these steps:
1. Click Reports | Reporting Wizard. The Reporting Wizard opens.
2. Click Next at the introductory screen, if present.
3. The Wizard will inform you that the prerequisite for all reports is to record the data to be
reported on. This can be done by running the Gray Scale Wizard.
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4. You will need to select which report you would like to generate from the list that the Wizard
presents. Your list may be different than the list in the screen shot below. You will need to try
each report to see which ones are most valuable to you.
5. The Report can contain textual information in addition to the data that will be presented in the
charts. You will need to select the Gray Scale results saved for a customer from the Customer Name and Display Device - Date/Make dropdown list.
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6. Additional information to display on the report is requested on the next step as well.
7. The next step will allow you to enter your Calibrator's information, along with a company logo
(your logo should be approximately 90X70 pixels in size). Your Calibrator information will
appear in the bottom left corner of each report.
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8. Once the Wizard has gathered enough information to generate the report, click on the "Finish"
button
9. Your Report will be presented as a "Print Preview". To immediately Print the report, you can
click on the Printer icon at the top of the report. You may also choose to export the report as a
PDF file, which can be e-mailed or placed on a web site. Most reports will be completely
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contained in a single page. If desired, you can run the Report Wizard again and select a different
report with the same data to create a multiple page presentation.
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Reports - Calibration Summary
The Calibration Summary is one of the reports that can be created by the ColorFacts Report Wizard. It
displays before and after readings for chromacity coordinates, temperature tracking and color tracking
and appears as shown here:
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Reports - Detailed Calibration Summary
The Detailed Calibration Summary is one of the reports that can be created by the ColorFacts Report
Wizard. It displays before and after readings for chromacity coordinates, temperature tracking, color
tracking, and IRE data for each graph and appears as shown here:
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Reports - Chromacity Detail
The Chromacity Detail Report is one of the reports that can be created by the ColorFacts Report Wizard.
It displays chromacity coordinates and appears as shown here:
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Reports- Display Device Analysis
The Display Device Analysis is one of the reports that can be created by the ColorFacts Report Wizard.
It displays a snap shot of a display device at a point in time and shows chromacity coordinates,
temperature tracking, luminance tracking and color tracking and appears as shown here:
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Reports - Detailed Display Device Analysis
The Detailed Display Device Analysis is one of the reports that can be created by the ColorFacts Report
Wizard. It displays a snap shot of a display device at a point in time and shows chromacity coordinates,
temperature tracking, luminance tracking, color tracking, and IRE data for each graph and appears as
shown here:
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ColorFacts Macros
A ColorFacts Macro is an extension of the ColorFacts Display Device Analysis System that allows you
to write your own programming to perform a specialized task. The most common expected uses of the
ColorFacts Macro feature is to perform additional tasks that are not available within the standard user
interface or to build automated calibration systems that interface directly with a display device.
The Macro ability is an advanced feature of the product that is designed to allow the development of
specialized solutions. Since the functionality of a ColorFacts macro is left completely up to the
developer, technical support on the development of a ColorFacts Macro is not free, and will be handled
on a consulting basis. Milori, Inc. is available to develop ColorFacts macros for specialized situations or
automated calibrations.
The ColorFacts Macro Editor uses a VBA-Like language with integrated intellisense, an Immediate
window and rich debugging tools to make programming a customized solution as intuitive as possible.
Although the development environment is rich, it will be necessary to have knowledge in VB/VBA
programming as well as color science to develop a rich Macro.
When you enter the Manage Macros screen from the Edit | Macros menu, you will be presented with a
list of your currently saved Macros. Macros are automatically saved and retrieved from the \Macros
folder under the \ColorFacts installation folder.
From the Manage Macros screen you can Run, Edit or Delete the selected Macro or Create a new one.
z
Run Macro - Executes the code contained in the selected Macro.
z
New Macro - Creates a new Macro which is initialized to contain the code contained in the
"_Default" Macro
Note: The _Default Macro is a macro like any other and can be editted to contain the code you
would like to have present in all new Macros created in the future. If the _Default Macro is
deleted, new Macros will contain simple generic code on initialization.
z
Edit Macro - Opens the Macro Editor window so the selected Macro can be modified, run or
debugged. See Macro Editor for additional details.
z
Delete Macro - Erases the selected Macro from the list of Macros and physically deletes the
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Macro from storage
z
Macro Help - Displays assistance on Macro creation
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ColorFacts Macro Editor
The ColorFacts Macro Editor is the area where a Macro is actually developed. You will need to be
familiar with Visual Basic or VBA in order to create a new Macro with ColorFacts. It is expected that a
Macro would be developed to extend the features already available in ColorFacts or to develop a system
that allows an automated, closed-loop video calibrations to be run without human intervention.
When a Macro is executed, the procedure called "Main" will always be run first. Other procedures may
be created and called from within "Sub Main", but "Main" must exist in each Macro to operate
successfully. Several sample Macros are shipped with ColorFacts to demonstrate how this feature of the
program can be used.
To make creating a display analysis or calibration solution with ColorFacts easier, the ColorFacts API
("Application Programming Interface") is automatically available to every macro and immediately ready
for use. This is the same API that ColorFacts itself uses to analyze a display.
Note: The API that is available in the Macro Editor is the "live" API that is in use with ColorFacts
itself. You can interact with the ColorFacts user interface through the macro. This can be used to your
advantage within the macro, but the point must be understood. For example, if you disconnect from the
Active Meter in a Macro, ColorFacts itself will not have an Active Meter. Alternatively, connecting to a
new Active Meter will mean that ColorFacts itself will be using that meter when the Macro has
completed. The same concept applies to everything else in the API.
To use the ColorFacts API in a Macro, simply use the globally available top level object, "CFApp".
Other objects can be viewed by clicking on the "Object Browser" button on the toolbar, or by pressing
"F2". For a very quick example, the one-line of code below will display the word "True" if the Active
Meter is "Nothing" (does not exist) or "False" if the Active Meter has already been established.
MsgBox CFAPP.Meters.ActiveMeter is Nothing
For other examples, please see the supplied sample Macros or refer to the ColorFacts API Help File.
Note that Milori's standard technical support does not cover the development of custom Macros, but the
company does offer Consulting and Engineering services if you should desire such assistance.
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Once you have completed your Macro, you can run it by clicking on the "Play Macro" button on the
toolbar, or by pressing the F5 key. Additional Macro Editor details are available in the Help file for the
Macro Editor itself.
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Options Dialog
The ColorFacts Options menu allows you to set up various options and preferences for controlling how
ColorFacts operates. There are four tabs in the ColorFacts Options menu: Hardware, Interface,
Exposure and Preferences. This is where you might choose to turn on or off the sound or animation in
ColorFacts, or to set the units for the displayed luminance.
Displaying the Options Dialog
1. Click Edit | Options on the Menu bar. The Options Dialog will appear.
2. Select the Tab for the category of item you would like to modify.
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Options
Interface Tab
The Interface Tab contains options that affect the way that ColorFacts appears or operates while
running. This tab contains the following items:
Tab Contents
z
Animation - The "Throbber" animation shows that ColorFacts is in the middle of taking a
reading or running a process. To select a different animation to show while ColorFacts is busy
running a process choose an animation from the drop down list. If you wish to not have an
animation play at all, uncheck the Display Animation While Communicating check box.
For more information on the animation that appears to the right of the toolbar when activity is
taking place, please see the topic about the ColorFacts Throbber.
z
Show Shortcut Keys in Tooltips (i.e."Shift-F7") - When checked, ColorFacts will indicate
the shortcut key for a toolbar button in a small Tooltip window that appears when your mouse
is hovered over the button for a few seconds. The shortcut key can be used instead of clicking
the toolbar button for users that would like to use the keyboard for these operations. When
unchecked, ColorFacts will display a Tooltip that contains a short description of the button
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without the shortcut key present.
z
Display IRE Markings After Measuring Gray Scale (7.5, 10, 20...) - When checked,
ColorFacts will display indications for percentages in typical IRE terms after running the Gray
Scale Wizard. It will indicate the values of 7.5, 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100 IRE
(which is a percentage of peak white) no matter how many gray scale levels were read by the
Wizard. When unchecked, ColorFacts will indicate the values where each gray scale reading
was taken (for instance, if 32 gray scale levels were measured, the graph would contain an
indicator at each of those points).
z
Display Brushed Aluminum Look in User Interface - When checked, ColorFacts will
display a brushed aluminum effect in the user interface. If resources are constrained, this
option can be unchecked and the application will display a flat gray interface.
z
Reset All Previously Dismissed Dialogs - As you use the ColorFacts application, yellow
Help windows may have popped up that allow you to select 'Do Not Display This Message
Again' and the message no longer appeared in the application. Clicking this button will cause
the dismissed messages to start appearing again. Note: This button is effective immediately.
You do not need to click 'Apply' to have this action carried out.
Click Apply to apply any changes made in the Options window.
Click Cancel if you wish to leave the dialog without saving your changes.
Click OK to apply your changes and close the Options window.
Click Help to view this information again.
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Options
Exposure Tab
The Exposure tab of the Options dialog contains settings that determine how long the connected
hardware will gather light to make an analysis. In general, longer exposure times result in more accurate
data.
Tab Contents
(Top to Bottom)
z
Automatic Exposure Time - When selected, ColorFacts will determine the length of the
exposure time based on the luminance of the subject matter and the operation of the hardware.
ColorFacts will automatically scale the exposure time up or down to gather an appropriate
amount of light to maximize accuracy without causing the reading to take an excessive amount
of time. As darker images are displayed, longer exposure times are used and when lighter
images are displayed, shorter exposure times are used. This option is the default selection.
z
Manual Exposure Time - Exposure times will be fixed to a specified length of time when
this option is selected. Different exposure times can be set for different tasks. All exposure
times are expressed in milliseconds (for example, 500 indicates an exposure time of 1/2
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second). Note that the entered exposure time will be used regardless of whether that length of
time helps to maximize accuracy.
Click Apply to apply any changes made in the Options window.
Click Cancel if you wish to leave the dialog without saving your changes.
Click OK to apply your changes and close the Options window.
Click Help to view this information again.
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Options
Hardware Tab
The Hardware tab establishes the parameters of communication with the attached hardware meter. This
tab contains the following
Tab Contents
z
Meter - By default, ColorFacts will automatically detect any connected hardware and
establish the parameters for communication. To enable the default behavior, select the "(AutoDetect)" option
If your hardware device takes a long time to be detected, or if you need to set properties of the
device, you can select your specific device from the drop-down list. When a specific device is
selected, no other device will be detected or initialized for communication.
When you select a specific device, you may also be presented with settings that are specific to
that device. There is no way to specify these settings in the "(Auto Detect)" mode, so you will
need to select your device in order to do this.
Click Apply to apply any changes made in the Options window.
Click Cancel if you wish to leave the dialog without saving your changes.
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Click OK to apply your changes and close the Options window.
Click Help to view this information again.
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Options
Preferences Tab
The Preferences tab of the Options dialog contains settings that allow you to customize the way that
ColorFacts works. This tab contains the following
Tab Contents
(Top to Bottom)
z
Photometric Unit - The Photometric unit can be set to display either Metric units or Imperial
units, depending on your country, language, measuring system or personal preference. Note
that for meters that have a physical hardware switch, it should always be set to the Metric
position in order to allow this feature to operate normally, even if you choose to use Imperial
units within the software.
z
Play Sound Effects - When checked, ColorFacts will indicate normally silent operations (like
the retrieval of data from the hardware meter) with sound effects. When unchecked, the
application will be silent.
z
Retain Instrument Title and Border When Saving to File - When checked, ColorFacts will
include the Instrument title bar and border when the data from an Instrument is saved. For
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instance, saving the graph of the Color Temperature Histogram will produce a graphic that
contains the title bar for that instrument. This is helpful for taking screen shots or for easily
titling a graphic. When unchecked, ColorFacts will save a graphic containing just the data
within the Instrument that does not contain the title or border.
z
Automatically Arrange Instruments When 'Open All' is Selected - When checked,
ColorFacts will arrange the Instruments when 'Open All' is selected from the Instruments
menu. When unchecked, ColorFacts will open all of the Instruments but make no attempt to
arrange them.
z
Calculate Luminances of Primaries (Instead of Measuring) - ColorFacts can use one of
two slightly different techniques for displaying Instruments that indicate adjustments towards
a goal.
„
Calculate Luminances of Primaries (When this box is checked) - Based on only
the color of the Red, Green and Blue primary colors and the measured color of
the white point, the luminances of the primaries can be mathematically
calculated. Those luminance values are then used in subsequent calculations.
The advantage of this technique is that it is mathematically "clean" since the
primary colors calculate precisely to the white point.
„
Measure Luminances of Primaries (When this box is not checked) - The
luminance of the Red, Green and Blue primary colors are measured by the
hardware meter and not calculated from the measured color of the white point.
The advantage of this technique is that it is experimentally more valid, since the
data was not derived mathematically, but actually obtained from the attached
meter.
Depending on how accurate the hardware instrument is in obtaining color and
luminance information, these two options may produce slightly different results.
The choice of which option produces more accurate results for your application
depends on the hardware being used and the intended use of the data. Some
experimentation with the two settings may be necessary.
z
Open all Instruments on Startup- When checked, ColorFacts will automatically open and
arrange all instruments in the display window when the application first opens.
z
Double Click Resets Instruments - When checked, you can double-click on the face of an
instrument to instantly reset it. This option is off by default to prevent the accidental erasure
of data.
z
Check For Updates Automatically Using the Internet - When ColorFacts is loaded it
checks the internet for program updates (this option requires a connection to the internet prior
to opening ColorFacts).
Click Apply to apply any changes made in the Options window.
Click Cancel if you wish to leave the dialog without saving your changes.
Click OK to apply your changes and close the Options window.
Click Help to view this information again.
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Options
Multi-Display Tab
The Multi-Display tab presents and allows you to set options related to the set-up of video walls and
other multi-display systems. This tab contains the following
Tab Contents
z
Target Matching Criteria - The Color Matching Criteria allows you to precisely define what
is contained in the Target that you are trying to reach with the ColorFacts real-time
Instruments. You can choose from the following two settings for this option:
1. Color Only (xy Chromacity Coordinates)
[Default]
ColorFacts will normally use the Instruments (graphs, meters, etc.) to display the
corrections and adjustments that will be needed to reach a defined color goal. This color
goal is devoid of any luminance information. For example, the goal may be D65 for the
gray scale, and the Instruments will show the corrections necessary to reach that point.
The D65 point itself does not have a luminance associated with it, so the adjustments
will show how to reach the color only.
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This is the normal operation of ColorFacts.
2. Color and Luminance (xyY)
With video walls and multi-display systems (or in a single display system where a target
luminance is known), it is common to wish to match BOTH color and luminance
simultaneously. For instance, you may take a measurement of one display and wish to
match a second display to it in both color and luminance.
When this option is selected, the ColorFacts Instruments will display the corrections and
adjustments that will be necessary to match both the color and the luminance. This will
often cause all three of the Red, Green and Blue correction values to be on the same side
of the 100% target line, and possibly by a significant amount. This is normal, and
indicates that the luminance needs to be increased or decreased significantly in order to
match the target.
Only when BOTH the luminance and the color of the target have been matched will the
Instruments in the ColorFacts interface track with the reference (i.e. 100%).
Note: If you choose "Color and Luminance" as your Target Matching Criteria, you should
specify the luminance that you would like to match in the Custom Target dialog box. This
dialog can be accessed by clicking on the "White Target" item in the status bar and choosing
"Custom..." from the menu that appears (the last item in the White Target menu)
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When you choose "Custom..." from the Target menu, you can specify both the color and
luminance for the Target you would like to match.
For more information on how to use this dialog, please see the Custom Color Reference topic.
Click Apply to apply any changes made in the Options window.
Click Cancel if you wish to leave the dialog without saving your changes.
Click OK to apply your changes and close the Options window.
Click Help to view this information again.
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Toolbar
The ColorFacts Toolbar includes all of the Instruments available to analyze your device. Click on any of
these Instruments to see that Instrument appear, or click it again to have the instrument disappear.
Click on a button in the toolbar image below to find out more about that Instrument:
To add or remove the Toolbar to or from the ColorFacts screen, click on View | Toolbar.
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Activity Animation (the "Throbber")
As an indication that ColorFacts is in the process of taking a reading and processing the numbers, you
may see a graphic on the right hand side of your toolbar that animates during active times, as shown
here:
When the graphic is idle, no communication with the meter is taking place. When the graphic is
animated, ColorFacts is actively communicating with the meter and is preparing to display new data.
You may choose the animation you would like to display in the "throbber", or turn it off completely in
the ColorFacts Communication Options screen.
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Status Bar
Understanding the Status Bar
The Status Bar is designed to provide you important information on what is happening within
ColorFacts and will appear at the bottom of your ColorFacts screen.
From left to right, you will find the following information displayed on your Status Bar:
1. "Cancel" button to stop the current operation (when a cancellable operation is in progress)
2. A textual description of the current activity being performed in the software (if any)
3. The current state of the hardware meter, with the following legend:
A dot will indicate that a meter is connected. The dot will be
green when a communication channel is open to a physical
hardware device.
A second dot will indicate that a meter has been trained by
another meter. See the Meter Training Wizard for more
details.
A red dot indicates that ColorFacts is able to receive data, but
no communication channel is open. This means that the
connected "meter" is a virtual device that does not need a
communication channel open in order to receive "data".
ColorFacts could be receiving data through the "Simulated
Meter" or through a "Manual Entry" mechanism or some other
non-hardware-based method.
A red "X" indicates that no meter is active and ColorFacts is
not able to receive any information from any source.
4. The fourth item is the Color Reference being used for the calculations within the software.
5. The selected White Target.
In the screen shot above, the current activity is that the "Contrast Wizard" is running, a hardware meter
is connected and the communications channel is open, the Color Reference is set to the HDTV standard
and the White Target is standard illuminant D65.
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Taking Action from the Status Bar
You can also take action directly from the Status Bar. From the status bar, you can click on the
appropriate item to:
z
Connect or Disconnect from a meter, as shown in the screen shot above.
z
Train a meter
z
View the meter details
z
Select a Color Reference
z
Select a White Target
Viewing the Status Bar
To add or remove the Status Bar from the ColorFacts screen, click on View | Status Bar.
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