Phase correlation techniques have been used in image registration to estimate image displacements. These techniques have been also used to estimate optical flow by applying it locally. In this work a study of some aspects concerning the phase correlation technique to estimate image motion is presented.

On the other hand, a different phase correlation-based technique is proposed to deal with a deformation/translation motion model, instead of the pure translations that the basic phase correlation technique can estimate. Some experimental results are also presented to show the accuracy of the motion parameters estimated and the use of the phase correlation to estimate optical flow. Further work is directed to use phase correlation techniques combined with more complicated motion models like the affine motion model.