Method for detecting remote sensing image change based on edge and grayscale
A remote sensing image and change detection technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problem of low precision and achieve the effect of improving detection accuracy
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[0030] 1. Extraction of edge features.
[0031] The edge detection algorithm in the present invention adopts the improved Canny algorithm. Canny operator can achieve a good balance between noise suppression and edge detection. The traditional Canny operator uses Gauss filtering to weaken the edge characteristics to a certain extent. In the present invention, a bilateral filter (Bilateral filter) is adopted instead of Gauss filter, which can better obtain image edge characteristics. The bilateral filtering method is as follows:
[0032] Let the denoising operator be D h , the filter model can be written in the following general form:
[0033] D h ( x ) = ∫ Ω w ( x , y ) X ti ( y ) dy ( ...
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