Precise and Reliable Image Shift Detection by a New Phase Difference Analysis Method
نویسندگان
چکیده
This paper describes a new approach for precise image shift detection between two images. The approach is based on an analysis of the phase difference spectrum between two images. Image shifts are directly evaluated from the phase difference spectrum without Fourier inversion. The cross s~ectrum is utilized as the weight parameter distribution. Synthetic and real images of typical image patterns were used in the experiment. Accuracy as high as 0.01 pixel, which has never been stably obtained with conventional methods such as phase-only correlation, is achieved stably and reliably for all of the image patterns.
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