中文说明：无失真数据隐藏是将静止图像水印嵌入并提取到覆盖图像中，并检测其鲁棒性参数的水印编码。
English Description：
Distortionless data hiding is the watermarking code that embedds and extract the still image watermark into the cover image and checks its robustness parameters.
DCT watermarking code for embedd and extract
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中文说明：无失真数据隐藏是将静止图像水印嵌入并提取到覆盖图像中，并检测其鲁棒性参数的水印编码。
English Description：
Distortionless data hiding is the watermarking code that embedds and extract the still image watermark into the cover image and checks its robustness parameters.