The paper proposes a semi-fragile watermarking authentication scheme of color image based on wavelet compression. The scheme uses wavelet compression to obtain watermark image and converts the color images from RGB space to the HSV space such that the saturation S can be extracted. Then,it makes DCT transform for S to obtain the low-frequency information as watermark embedding position,and embeds watermark by singular value decomposition algorithm. Meanwhile,it makes the watermarked image Hash arithmetic to...
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