National Instruments IMAQTM Manuale Utente

© National Instruments Corporation

CWIMAQVision.ConvertPixelToRealWorldCoordinates

. If 

the application requires shape measurements, correct the image by 
removing distortion with 

CWIMAQVision.CorrectCalibratedImage

.

Correcting images is a time-intensive operation.

A calibrated image is different from a corrected image.

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 an image rotation method, void the calibration information. Use 

CWIMAQVision.WriteImageAndVisionInfo

 to save the image and all of the attached 

calibration information to a file. If you modify the image after using 

CWIMAQVision.WriteImageAndVisionInfo

, you must relearn the calibration 

information and use 

CWIMAQVision.WriteImageAndVisionInfo

 again.