Bulletin of Surveying and Mapping ›› 2021, Vol. 0 ›› Issue (7): 44-51,58.doi: 10.13474/j.cnki.11-2246.2021.0207

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Remote sensing image change detection based on improved interval type-2 fuzzy clustering

SU Yifan1, DANG Jianwu1,2, WANG Yangping1,2, YANG Jingyu1,2   

  1. 1. School of Electronics and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. Gansu Provincial Engineering Research Center for Artificial Intelligence and Graphics & Image Processing, Lanzhou 730070, China
  • Received:2020-08-10 Online:2021-07-25 Published:2021-08-04

Abstract: The complex fuzziness of remote sensing image can interfere with the result of image change detection so that the interval binary fuzzy C-means clustering algorithm is introduced to solve the problem. But the randomness of algorithm parameters will affect the accuracy of change detection. In this paper, the candidate solution of firefly algorithm is optimized by using local optimal solution, and the variable step size factor is introduced, so as to find the fuzzy factors of interval type-2 fuzzy C-means clustering algorithm adaptively. The interval type-2 fuzzy C-means clustering is carried out combining with the fuzzy factors obtained by optimization and the image change information is extracted by iteratively updating the membership degree. Finally, the weighted Karnik-mendel algorithm based on compound trapezoid rule is used to reduce type and resolve fuzzy to optimize clustering centre. And the change types are determined according to the principle of maximum membership. Through experimental verification, the method in this paper obtains the better fuzzy factors and more accurate clustering centers, has better robustness, and improves the change detection accuracy, and the detected change area is more elaborate.

Key words: remote sensing image change detection, firefly algorithm, interval type-2 fuzzy C-means clustering, fuzzy factors, type-reduction algorithm

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