Hi, that would assume that the registration is inversely consistent between the two images which is not necessarily the case. Cheers, Andreas Am 25.07.12 11:20 schrieb "Gabor Perlaki" unter <[log in to unmask]>: >Dear Saad, > >Thank you for your answer. I don't understand something in the script >you sent. > >There is two registration in the script: > >1, A image to the B >2, B image to the A > >and after that the Forward half transform from the first registration is >applied for A image and the Forward half transform from the second >registration is applied for B image. > >Why do we need 2 registrations? Wouldn't it better to do only the first >registration and after that applying the Forward half transform to the A >image and the Backward half transform to the B image? > >Thanks, >Gabor