> Why are you histogramming im8? which should be the correlation that you are looking for - just plot im8 and if everything else is correct then you should have one dimensional distribution reaching a peak at the position corresponding to the relative rotation angle of the 2 images. > > Regards > > Dave Robinson
Bro Dave, this is the im8 graph after i plot out..but why the peak will at left side?? izit my inverse FFt do wrong?