Image alignment and similarity transform
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I'm trying to align two images using maketform to get an affine transform but I am having trouble using the similarity matrix:
1] get 2 correspondence points from each image.
A = [x1 y1; x2 y2];
B = [x3 y3; x4 y4];
2] find the difference between each points for the similarity matrix:
S = B/A
3] get the affine transform using maketform:
trans = maketform('affine', inv(S)');
Further down the road I plan to use the affine transform to align one image to the other.
However, before that I get an error at stage 3:
The final column of A must consist of zeroes, except for a one in the last row.
I'm not sure I'm using the right format for the similarity matrix S. Any help for this would be much appreciated.
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