Abstract
A new approach fbr detecting an image shift between two images is presented, in which the image shift is obtained from the chase difference snectrum m consideration of the cross spectrum after Fourier transformation. This approach can get rid of errors due to noises in the phase difference spectrum as a wait Darameter based on the cross spectrum is set to each frequency. ln exDeraments of image shift detection for some computer synthetic images and camera real images, it is made clear that as a high accuracy as average 0.0 1 pixels is obtained forr all image samples except fbr a sinsrle frequency image. The results are compared with those by the conventional method fbr the same image samples. The proposed approach is considerably useful for the orecise image shift measurement with an accuracy as high as 0.01 plxels.
