基于HVS和关系的DCT域彩色图像水印方案

J4 ›› 2014, Vol. 36 ›› Issue (02): 311-316.

基于HVS和关系的DCT域彩色图像水印方案

熊祥光，王端理

（贵州师范大学数学与计算机科学学院，贵州贵阳 550001）

收稿日期:2012-10-10 修回日期:2012-12-30 出版日期:2014-02-25 发布日期:2014-02-25
基金资助:
贵州省科学技术厅、贵州师范大学联合科技基金资助项目(黔科合J字LKS［2011］7号)

Color image watermarking scheme based on HVS and relationship in DCT domain

XIONG Xiangguang,WANG Duanli

（School of Mathematics and Computer Science,Guizhou Normal University,Guizhou 550001,China）

Received:2012-10-10 Revised:2012-12-30 Online:2014-02-25 Published:2014-02-25

摘要/Abstract

摘要：

提出了一种基于人类视觉系统和关系的离散余弦变换域水印技术。首先对二值水印图像进行混沌加密和Arnold置乱处理；其次对载体彩色图像的每一分量进行8×8分块的离散余弦变换；最后根据每一分块的亮度和纹理掩蔽特性和水印图像的像素取值来自适应调整选定位置的离散余弦变换系数的大小关系以嵌入水印。实验表明，提出的算法具有较好的透明性和抵抗攻击的能力，且在红色分量嵌入的水印比在蓝色或绿色分量嵌入的水印对滤波、有损压缩攻击等具有更好的鲁棒性。与同类算法相比，提出的算法具有更好的性能。

关键词: 彩色图像水印, 离散余弦变换, 人类视觉系统, 关系

Abstract:

A novel watermarking technique based on human visual system (HVS) and relationship is proposed in the discrete cosine transform (DCT) domain. Firstly, the binary watermarking image is processed by chaotic encryption and Arnold scrambling. Secondly, each component of the original color image is subdivided into blocks of size 8×8 and is performed by DCT transform. Finally, according to the brightness and texture masking features of each sub-block and the watermarking pixel values, the relationship of the selected DCT coefficients is adaptively adjusted to embed the watermarking. Experiments show that the proposed algorithm has good transparency and the ability to resist a variety of attacks and the embedded watermarking in red component is more robust against compression and additive noise et al. than the embedded watermarking in the blue or green component. Compared with similar algorithms, the proposed algorithm has better performance.

Key words: color image watermarking;discrete cosine transform;human visual system;relationship

熊祥光，王端理. 基于HVS和关系的DCT域彩色图像水印方案[J]. J4, 2014, 36(02): 311-316.

XIONG Xiangguang,WANG Duanli. Color image watermarking scheme based on HVS and relationship in DCT domain [J]. J4, 2014, 36(02): 311-316.

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