Change detection and registration of remote sensing image based on random walk

A method of change detection and registration for remote sensing image based on random walk is proposed in this paper. The feature of this method is that it extracts the key points of multi-temporal remote sensing images as the initial seed points of random walk and the feature points of image registration and combines image registration with change detection to improve the efficiency of change detection. This method applies an energy minimization strategy to extract the opacity of the pixels which can detect large-scale changes including some imperceptible changes. The simulation shows the effectiveness of this method.