Comparison of Subpixel Phase Correlation Methods for Image Registration

Abstract : The popular phase correlation method (PCM) for image registration has been extended to subpixel accuracy by several alternative algorithms, each claiming accuracies on the order of 0.02 - 0.03 pixels for 256 x 256 images. However, the performance reported in the literature is sometimes based upon idealized images or upon just a few selected images. This leaves users in doubt as to which algorithm is truly superior. This work compares three subpixel PCM algorithms using a common test set of realistic images derived from satellite imagery. Of the three algorithms investigated in this work, the one of Guizar et al. (conceptually the simplest) consistently performed best.

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