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Chapter 2
Getting Measurement-Ready Images
© National Instruments Corporation
2-7
the viewer. You can set the 
CWIMAQPalette.Type
 property to apply 
predefined color palettes. For example, if you need to display a binary 
image—an image that contains particle regions with pixel values of 1 
and a background region with pixel values of 0—set the 
Type
 property to 
cwimaqPaletteBinary
. For more information about color palettes, refer 
to Chapter 2, Display, of the IMAQ Vision Concepts Manual.
You also can set a default palette during design time using the Menu 
property page. Users can change the color palette during run time by using 
the right-click menu on the viewer.
Attach Calibration Information
If you want to attach the calibration information of the current setup 
to each image you acquire, use 
CWIMAQVision.SetCalibrationInformation
. This method takes 
in a source image that contains the calibration information and a 
destination image that you want to calibrate. The output image is the 
inspection image with the calibration information attached to it. For 
detailed information about calibration, refer to Chapter 6, 
.
Note
Because calibration information is part of the image, it is propagated throughout 
the processing and analysis of the image. Methods that modify the image size, 
such as geometrical transforms, void the calibration information. Use 
CWIMAQVision.WriteImageAndVisionInfo
 to save the image and all of the 
attached calibration information to a file.
Analyze an Image
When you acquire and display an image, you may want to analyze the 
contents of the image for the following reasons:
To determine if the image quality is high enough for the inspection 
task.
To obtain the values of parameters that you want to use in processing 
methods during the inspection process.
The histogram and line profile tools can help you analyze the quality of the 
images.