基于HVS的多通道DCT彩色图像水印算法  

Multi-channel watermarking scheme based on HVS for color image in DCT domain

作　　者：贝依林[1] 桑胜举[1,2] 

机构地区：[1]泰山学院信息科学技术学院,山东泰安271021 [2]华东理工大学机械动力学院,上海200237

出　　处：《计算机应用》2009年第12期3431-3433,共3页journal of Computer Applications

基　　金：泰安市科技发展计划项目(20083002);泰山学院科研计划项目(Y06-2-15)

摘　　要：提出了一种基于离散余弦变换(DCT)的彩色盲水印算法,首先将彩色图像由RGB彩色空间转换到YCbCr彩色空间,利用其良好的空间独立性,分别对三个空间进行DCT,并根据人眼视觉特性自适应选择嵌入量,嵌入水印。实验结果表明,嵌入算法容易实现,且该水印算法具有很好的不可见性,并对剪切和JPEG压缩等图像处理都有很好的鲁棒性。A blind watermarking algorithm for digital image based on Discrete Cosine Transform （DCT） was proposed. First, the original image was transformed from RGB color space into YCbCr color space, which has excellent independence of every channel, and then the watermarking was embedded into all three color spaces. Secondly, the watermarking was embedded by image watermarking technique of DCT, and the embedding capacity depended on Human Visual System （ HVS）. The experimental result indicates that the algorithm is visually imperceptible and robust to general image processing.

关 键 词：数字水印 多通道 视觉特性 鲁棒性 离散余弦变换 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]