UNSUPERVISED CHANGE DETECTION IN SAR IMAGES USING GAUSSIAN MIXTURE MODELS
- 1School of Surveying and Geospatial Engineering, Dept. of Remote Sensing, College of Engineering, U. of Tehran, Tehran, Iran
- 2Dept. of Geography, Environmental Studies and Geomatics, U. of Ottawa, Ottawa, Canada
- 3Faculty of mathematical Sciences, Dept. of Statistics, University of Shahid Beheshti, Tehran, Iran
Keywords: Gaussian Mixture model, Change Detection, SAR images, Difference image, Multi-temporal Images
Abstract. In this paper, we propose a method for unsupervised change detection in Remote Sensing Synthetic Aperture Radar (SAR) images. This method is based on the mixture modelling of the histogram of difference image. In this process, the difference image is classified into three classes; negative change class, positive change class and no change class. However the SAR images suffer from speckle noise, the proposed method is able to map the changes without speckle filtering. To evaluate the performance of this method, two dates of SAR data acquired by Uninhabited Aerial Vehicle Synthetic from an agriculture area are used. Change detection results show better efficiency when compared to the state-of-the-art methods.