一种基于视觉模型的DCT数字水印算法

提出了一种水印系统与人眼视觉模型相结合的离散余弦变换数字水印算法。该算法利用了人眼视觉模型（HVS）来选取水印嵌入区域，使其既能够保证水印信息的鲁棒性又能够满足其不可见性。利用基于能量关系的算法进行水印嵌入。最后进行了仿真实验，嵌入水印的图像中很难发现水印的痕迹，具有较高的清晰度。

The Algorithm of DCT Digital Watermark Based on Visual Sense

It was proposed that a digital watermark algorithm,which combining watermark system with the model of human visual sense,applied discrete cosine transformation in the paper.The algorithm chooses watermarkembedding district based on humane visual sense model.It was not only warranting the robustness of the watermark information,but also meeting with the invisibility of the district by using the algorithm.It was used the algorithm based on energy relation to embed watermark.The simulation verified that it was difficult to find the mark in the picture embedding watermark and the picture possesses better distinct.