说明: 经典COX水印算法,matlab实现 rgb_image = imread('H:\gg\源代码\lena.bmp'); ycbcr_image = rgb2ycbcr(rgb_image); y = ycbcr_image(:,:,1); % extract luminance component dct_image = dct2(y); % Compute the DCT of Y plane %dlmwrite('orig_y_img.txt', ycbcr_image(:,:,1));
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