中文说明：基于离散余弦变换的数字水印，包括水印的嵌入和提取以及常间的各种水印攻击
English Description：
The digital watermarking based on DCT includes the embedding and extraction of watermark and various kinds of watermark attacks
Digital watermarking based on discrete cosine transform
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中文说明：基于离散余弦变换的数字水印，包括水印的嵌入和提取以及常间的各种水印攻击
English Description：
The digital watermarking based on DCT includes the embedding and extraction of watermark and various kinds of watermark attacksDCT
...\mark.bmp
...\NC.m
...\PSNR.m
...\withmark.bmp
...\zongchengxu.m