Acta Geodaetica et Cartographica Sinica ›› 2018, Vol. 47 ›› Issue (5): 611-619.doi: 10.11947/j.AGCS.2018.20160607

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Change-detection Method for SAR Image Using Adaptive Distance and Fuzzy Topology Optimization-based Fuzzy Clustering

WANG Jianming1, SHI Wenzhong2, SHAO Pan1,2   

  1. 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;
    2. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China
  • Received:2016-11-28 Revised:2018-03-11 Online:2018-05-20 Published:2018-06-01
  • Supported by:
    The National Natural Science Foundation of China (No.41331175);The Hong Kong Polytechnic University (Nos.1_ZVF2;1-ZVE8)

Abstract: In this paper, a framework of change detection based on adaptive distance and fuzzy topology (FATCD) is proposed for synthetic aperture radar (SAR) imagery. FATCD integrates the characteristics of differenced image and can overcome the limitations of fuzzy C-means (FCM) type algorithms. The framework includes two key steps. First, a new adaptive method is employed to calculate the distances from samples to cluster centers using an adaptive distance function. As a result, the formula of pixel membership evaluation is modified, and the accuracy of the obtained fuzzy membership degree is improved. Then, fuzzy topology is integrated into the maximum membership rule to improve the traditional defuzzification method. In virtue of the above two points, FATCD can enhance the change detection performance of FCM-type algorithms. Experimental results on two different SAR images confirm the effectiveness of the proposed technique.

Key words: SAR image change detection, fuzzy topology, adaptive distance, fuzzy clustering algorithm, FATCD

CLC Number: