Calibration
Owning Palette: Vision UtilitiesInstalled With: NI Vision Development ModuleUse the Calibration VIs to spatially calibrate an image. Spatial calibration converts pixel coordinates to real-world coordinates while compensating for potential perspective errors or nonlinear distortions in your imaging system.
| Palette Object | Description |
|---|---|
| IMAQ Learn Calibration Template |
Learns a calibration from a template. The template can be an image of a grid of circles, or a set of pixel coordinates and corresponding real-world coordinates. |
| IMAQ Set Simple Calibration |
Sets a simple calibration for an image or resets the real-world coordinate system in a calibrated image. |
| IMAQ Set Calibration Info |
Sets calibration information from a calibrated image to an uncalibrated image. Both images must be the same size. |
| IMAQ Get Calibration Info |
Returns calibration information associated with an image. |
| IMAQ Convert Real World to Pixel |
Transforms real-world coordinates to pixel coordinates, according to the calibration information acquired from the IMAQ Learn Calibration Template VI, the IMAQ Set Simple Calibration VI, or copied from a calibrated image using the IMAQ Set Calibration Info VI. |
| IMAQ Convert Pixel to Real World |
Transforms pixel coordinates to real-world coordinates, according to the calibration information contained in the image. Calibration information is attached to this image by the IMAQ Learn Calibration Template VI, the IMAQ Set Simple Calibration VI, or the IMAQ Set Calibration Info VI. |
| IMAQ Correct Calibrated Image |
Corrects a calibrated image by applying a calibration to create a spatially correct image. |
| IMAQ Read Image And Vision Info |
Reads an image file, including any extra vision information saved with the image. This includes overlay information, pattern matching template information, and calibration information, as written by the IMAQ Write Image And Vision Info VI. |
| IMAQ Write Image And Vision Info |
Writes an image, along with extra vision information associated with the image, to a PNG file. This extra vision information includes overlay information, pattern matching template information, and calibration information. |