DCT transform image using watermark embedding. There watermark embedding and reading program, a reference picture. The watermark is read from a file, read the watermark is also written to another txt file.

DCT域图像水印\40.bmp
.............\DCTgongji.m
.............\hidden.txt
.............\message.txt
.............\showDCT.m
.............\showDCT2.m
.............\watermarkedlena.bmp
DCT域图像水印

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