How can I detect small (less than 1° ) rotations using FFT phase correlation?
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Hi, I'm trying to detect sub-pixel differences between 2 images. All working so far with translation. The rotation method however isn't so accurate with small angles esp the ones that really inteerst me (0.1~ 3). I also upsample my images for better results but still not so accurate. Any advice on what I should edit : log-polar interpolation.. add a filter .. ? Thanks Dana
回答（2 个）
Matt J
2014-3-18
0 个投票
Rotation in image space induces translation in radon space. Take the RADON transform of your image and apply the phase correlator to that.
Alex Taylor
2014-3-19
编辑：Alex Taylor
2014-3-19
0 个投票
If you have R2014a and the Image Processing Toolbox? You should look at imregcorr. It implements phase correlation based registration.
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2014-3-19
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