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本文提出一种基于多分辨率分解的数字水印技术 .利用多分辨率分解技术 ,相同分辨率层次的灰度级数字水印嵌入到对应的相同分辨率层次的原始静态图像之中 ,使水印对原始图像具有自适应性 .由于水印的嵌入过程是基于原始图像的不同分辨率层次之间的关系 ,所以水印的提取过程不需要原始图像 .实验结果表明本文提出的数字水印技术 ,经某些图像处理操作和JPEG有损压缩后仍是鲁棒的 .
In this paper, a digital watermarking technique based on multi-resolution decomposition is proposed.Using multi-resolution decomposition technique, the gray-level digital watermark of the same resolution level is embedded into the corresponding original still image of the same resolution level, The image is adaptive.As the watermark embedding process is based on the relationship between the different resolution levels of the original image, the watermark extraction process does not require the original image.Experimental results show that the digital watermarking technology proposed in this paper, through some image processing After operation and JPEG lossy compression is still robust.