A change detection method of remote sensing images based on an independent threshold is proposed to solve the problems that the accurate change threshold could not be worked out by either the general global or the local threshold methods
and the failure of change detection happens in multi-temporal remote sensing images change detection if the prior probability of the class of changed pixels in the detection region is low. The multi-scale image segmentation is used to get image objects from the multi-temporal remote sensing images
and differences of image objects are calculated from each image object based on the change vector analysis. Then
training samples that meet the expectation maximization algorithm and Bayesian rule with minimum error rate are correctly selected from the difference of image objects using the adaptive sample selection method. The change threshold is finally obtained from the training samples by the independent threshold method
and the change detection result is derived. Experimental results show that the proposed method gains more accurate change threshold. Comparisons with the global threshold method and the local threshold method show that the independent threshold method reduces the average miss rate by 9.6% and 17.24%
respectively
in the suburbs change detection
and improves the accuracy rate by 51.27% and 35.42%
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