Firstly, the carrier image after discrete wavelet transform, and then be embedded watermark is embedded into the low frequency domain carrier image after wavelet transform of the carrier image, because of the low frequency domain performance stability in scored some attack.

基于dwt的数字水印源代码
.......................\1.tif
.......................\2.tif
.......................\pic.bmp
.......................\t1.m
.......................\watermark.bmp
.......................\watermark1.bmp

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