Aiming at automatic registration of multisensor images and multispectral images,we present an Fourier-based registration algorithm to estimate translations,rotations,and scalings in these images.First,with edge detection,salient and distinctive features can be extracted.Next,interpolated by pseudo-log-polar discrete Fourier transform(DFT),the log-polar DFT values of images can be approximated more accurately than by conventional techniques.Finally,we can use the log-polar frequency registration algorithm to align the features of images.Experimental results with various kinds of remote sensing images have verified robustness and high accuracy of this algorithm.