The method has very good watermark security and the watermark is extracted without using original unwatermarked image.
该方法嵌入的水印具有非常好的安全性，且水印提取不需要原始未加水印的图像。
The method has very good watermark security and the watermark is extracted without using original unwatermarked image.
该方法嵌入的水印具有非常好的安全性，且水印提取不需要原始未加水印的图像。
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