Digital image registration by phase correlation between boundary maps
Carlo Morandi, Francesco Piazza, R. Capancioni · IEE Proceedings E Computers and Digital Techniques · 1987
The performance of the phase-correlation image-registration algorithm when greyscale images are replaced by boundary maps is discussed in the light of several experiments. It is found that use of contours only does not substantially degrade the algorithm performance, while the reduced amount of information associated with each image may turn to advantage whenever the bandwidth of the communication channel is concerned.