测绘通报 ›› 2018, Vol. 0 ›› Issue (1): 50-54.doi: 10.13474/j.cnki.11-2246.2018.0009

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A New Semi-supervised Change Detection Method of Fusing Spatial Information

XIE Fuding, YU Shanshan, YANG Jun   

  1. College of Urban and Environment, Liaoning Normal University, Dalian 116029, China
  • Received:2017-04-18 Online:2018-01-25 Published:2018-02-05

Abstract:

Based on the improved semi-supervised fuzzy c-means (SSFCM) algorithm and Markov random field, this paper presents a new semi-supervised change detection method considering spatial information. The difference image is firstly obtained by subtracting two original remote sensing images, and a novel labelling method is introduced by the values of band 4. Then difference image is clustered by SSFCM and labeled samples. To find good monitoring result and remove noise points, this work considers the spatial information of pixels and markov random field. The final monitoring result is obtained by updating the membership matrix. In order to show the validity of the proposed method, two TM remote sensing images are chosen to feed our method to detect the change of forest. The experimental results indicate that the improved semi-supervised FCM algorithm can reduce the missed alarm rate, and Markov random field method can remove the noise points in the process of clustering and reduce the false alarm rate.

Key words: change detection, semi-supervised FCM algorithm, Markov random field, remote sensing image classification

CLC Number: