Image registration based on Fractional Fourier Transform

Abstract Image registration (IR) has been a fundamental task in many image processing applications. Conventional FFT-based methods ignored the spatial information of images, which is also important for IR. So, the Fractional Fourier Transform (FRFT) which contains both spatial and frequency information, has been taken granted in applying to IR scheme. In this paper, a novel method based on the combination of FRFT and conventional phase correlation technique is proposed. Simulation results of the proposed technique prove its better noise immunity than FFT-based method and its superiority than existing methods based on FRFT.

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