利用对水印加权的分组技术，盲水印检测器在性能上逼近非盲水印检测器。
Moreover, a classification technique of watermark weights is used, which makes the performance of the detector approximate to that of watermark detectors using original host data.
该算法改进了在DC系数中大都为非盲水印的缺点，同时避免了DC系数改变过大引起的块效应。
This algorithm improves the blemish which is not blind, at the same time it keeps from the block effect which brought in by changing too much of DC coefficients.
针对商品包装图像在水印检测过程中图像会发生变形的问题展开研究，提出一种基于非均值量化系数特征不变的盲数字水印方案。
In view of the problem that the pictures on commodities packaging may have distortion in watermark detection process, studies are carried out and a new blind digital watermark algorithm is proposed.
针对商品包装图像在水印检测过程中图像会发生变形的问题展开研究，提出一种基于非均值量化系数特征不变的盲数字水印方案。
In view of the problem that the pictures on commodities packaging may have distortion in watermark detection process, studies are carried out and a new blind digital watermark algorithm is proposed.
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