基于量化索引调制的鲁棒盲水印设计

Robust Blind Watermark Design Based on Quantification Index Modulation

针对低比特率的图像中,有损压缩对数字水印的正确提取带来的问题,文章提出了一种基于量化索引调制的鲁棒盲水印设计方法.该方法首先对原始图像进行小波变换,在量化之前,对小波变换后的系数进行水印信息的嵌入.文中详细设计了水印信息的嵌入过程,并在普通的图像编码算法基础上嵌入水印算法.经实验测试表明,该水印算法在抗压缩破坏时,嵌入的水印具有较强的鲁棒性,而且对原始图像质量影响非常小.

In the low bit rate image in view of the question the harmed compression which brought to the digital watermark extraction incorrect,this paper proposed one kind of blind watermark design method based on the quantification index modulation robust.This method first carries on the wavelet transformation to the primitive image,before the quantification,inserting the watermark information into the wavelet transformation coefficient.In this paper design watermark information inserting process in details,and the watermark algorithm union the ordinary image coding algorithm foundation.Tests after the experiment indicated that this watermark algorithm has the strong robustness to compression operating,the inserting watermark has the strong robustness,moreover is small to the primitive picture quality influence.