Remote sensing image change detection method based on image fusion
A remote sensing image and change detection technology, which is applied in the field of image processing, can solve the problems of unfavorable change area contour and detail information, unsuitable analysis of SAR images, blurred edges of change areas, etc., achieve fast calculation speed, simple operation, and overcome noise sensitivity Effect
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[0022] Reference figure 1 , The remote sensing image change detection method for image fusion of the present invention includes the following steps:
[0023] Step 1: Input the SAR image P before and after the change 1 And P 2 , Calculate the difference of the gray values of the pixels corresponding to the two images, and normalize to get the gray matrix H of the difference image S R :
[0024] 1a) Calculate the input image P 1 The gray value of the pixel (a, b) and the input image P 2 The difference in the gray value of the pixel (a, b) Z S ab :
[0025] Z S ab = | P 1 ab - P 2 ab | ,
[0026] among them, with Respectively input image P 1 The gray value of the pixel (a, b) and the input image P 2 The gray value of the pixel (a, b), a, b are the spatial coordinates of the pixel in the image;
[0027] 1b) Normalized Z S ab , Get the gray value S of the difference image S at each pixel (a, b) ab ,
[0028] S ab = 255 X Z S a...
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