IMAQ Learn Distortion Model VI
- Updated2023-02-21
- 6 minute(s) read
Requires: NI Vision Development Module
Learns a distortion model of the camera and lens setup. If your camera is not perpendicular to the object under inspection, you can combine distortion modeling with perspective calibration.
Supported Image Types

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Distortion Model Setup specifies the distortion model settings to use.
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Calibration Template Image is a reference to the image containing calibration information. |
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Image is a reference to the source image. |
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Reference Points is the set of reference points to use in learning a calibration. Create the reference points manually or use the IMAQ Calibration Target to Points - Circular Dots 2 VI.
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error in (no error) describes the error status before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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Add Points and Learn (True), when TRUE, adds points and learns the distortion model. When FALSE, only points are added. The default is TRUE. If you learn calibration using one image, set this parameter to TRUE to add points and learn the calibration template. If you learn calibration from multiple grid images, set this parameter to FALSE for the first n-1 images, then set it to TRUE for the last image. |
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Calibration Template Image Out is the reference to the output image. |
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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
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Examples
Refer to the following for examples that use this VI.
- LabVIEW\examples\Vision\Calibration\Perspective Calibration.vi















