Description: Based DWT watermark algorithm Layer wavelet decomposition, the image is extracted Layer low frequency coefficients, and randomly select some of the pixels, According to the relationship between the pixel and its neighbors is selected, it is determined the value of the watermark of the watermark is based on the image obtained, rather than in advance by According to the papers ' An Improved Robust Watermarking Technique in Wavelet the Domain' writing
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DWT-improved&image
..................\extract.m
..................\hs_err_pid520.log
..................\lena512.bmp
..................\main.m
..................\test.m
..................\watermark.mat
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