Chapter6 Calibration
©NationalInstruments Corporation 6-5 IMAQVision for LabWindows/CVI User Manual
Figure6-4. Defininga Coordinate System
Learning Calibration Information
Afteryou define a calibration grid and reference axis, acquire an image of
the grid using the current imaging setup. For information about acquiring
images,see the AcquireorReadanImagesectionof Chapter 2, Getting
Measurement-Ready Images. The grid does not need to occupy the entire
image.You can choose a region within the image that contains the grid.
Afteryou acquire an image of the grid, learn the calibration information by
inputting the image of the grid into imaqLearnCalibrationGrid().
Note If you wantt o specify a list of points instead of a grid, use
imaqLearnCalibrationPoints()to learn the calibration information. Use the
CalibrationPointsstructure to specify the pixel to real-world mapping.
1 Default Origin in a Calibration Grid Image 2 User-Defined Origin
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