基于边缘检测的块分类水印算法

A block classification watermarking algorithm based on edge detection

文章阐述了感知特性在水印技术中的重要应用,提出一种基于边缘检测的块分类自适应水印算法,把原图像分块,通过计算图像块中边缘点的数量进行分类。根据分类结果,不同强度的水印分量被嵌入到不同图像块的DCT低频系数中去。试验结果表明,该方法具有计算简单、感知效果好及鲁棒性强等特点。

The important application of perception characteristic of digital watermarking has been illustrated. An adaptive block classification algorithm based on edge detection has been proposed. In the algorithm,the original image is split into blocks and these blocks are classified based on edge detection. Watermark components with different strength are inserted into some DCT coefficients according to the classification. The experimental results demonstrate that the proposed algorithm have some good properties such as easy computation,good perception effect,and good robustness.