How to perform image registration on non-rectangular image
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I'm interesting in peforming image registration using imregtform on a non-rectangular region of interest that would be the "moving" image. Is there any way to do this? I initially tried to turn all the pixels within the "moving" image matrix that I don't want to affect registration to NaNs, but the imregtform function won't accept that input.
Image Analyst on 1 Aug 2022
Is it rotating and scaling while it translates? If not, you could use normalized cross correlation. See attached demo.
Or try one of the panoramic stitching algorithms. They find matching regions, which is necessary to construct the overall image.