The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLII-2/W7
https://doi.org/10.5194/isprs-archives-XLII-2-W7-623-2017
https://doi.org/10.5194/isprs-archives-XLII-2-W7-623-2017
13 Sep 2017
 | 13 Sep 2017

A SAR IMAGE REGISTRATION METHOD BASED ON SIFT ALGORITHM

W. Lu, X. Yue, Y. Zhao, and C. Han

Keywords: image registration, scale-invariant feature transform (SIFT), Wallis filtering, adaptive smoothing, image filtering

Abstract. In order to improve the stability and rapidity of synthetic aperture radar (SAR) images matching, an effective method was presented. Firstly, the adaptive smoothing filtering was employed for image denoising in image processing based on Wallis filtering to avoid the follow-up noise is amplified. Secondly, feature points were extracted by a simplified SIFT algorithm. Finally, the exact matching of the images was achieved with these points. Compared with the existing methods, it not only maintains the richness of features, but a-lso reduces the noise of the image. The simulation results show that the proposed algorithm can achieve better matching effect.