How to apply pixel shift to individual pixels in image file?
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I have a gray-scale image file (1024 rows by 1024 columns). The gray values range from 0 to 65535 (16-bit). I also have a distortion correction map (same size as the image file) which indicates how each pixel in the first image must be shifted to create the new 'corrected' image.
I've found several forum posts giving examples on how to apply a shift equally to all pixels. However, in my case, I'd like to apply different shifts to different pixels. In some cases, the shift could also be sub-pixel (in which case, I can imagine I'd have to first split each pixel into sub-pixels).
Thank you in advance for your help.