Research On Digital Watermarking Technology Based On Visual Attention Mechanism

With the rapid development of the computer network and digital techniques, the distribution of multimedia information becomes more and more convenient, but following is the increasingly important problems of copyright protection. Digital watermarking is an effective electronic copyright protection technique.This article combines the attention mechanism of human visual system and proposes a new gray scale digital image watermarking algorithm. According to the different sensitivity of human eyes to each feature location in an image, we can divide the image into salient region and non-salient region, and then embed strong watermark information in the salient region to improve the algorithm robustness; while embedding weak information in the less salient region to avoid image distortion. In addition, this article combines the spectral features of human visual system and two different color space models, and proposes two color image watermarking algorithms based on human visual attention mechanism. The experiments show that the proposed algorithms in this article not only increase the watermark robustness but also improve the image quality, and achieve better effects than the existing algorithms.