基于小波系数关系的半脆弱水印方案  

A Semi-Fragile Watermarking Algorithm Based on Relation Measures of Wavelet Coefficients

作　　者：赵华[1] 王志坚[1] 袁盾韬[2] 

机构地区：[1]河海大学计算机及信息工程学院,江苏南京210098 [2]中国南方电网超高压输电公司鲁布革发电总厂,云南罗平655800

出　　处：《微电子学与计算机》2007年第7期53-55,共3页Microelectronics & Computer

摘　　要：提出了基于小波变换系数间关系的半脆弱水印方案,通过构建小波域相邻及相应系数间的关系进行水印嵌入和提取,从而能够在侦测到对图像的恶意篡改的同时,对常见的图像处理仍保持很好的鲁棒性,此外由于对整个系数链进行了关联,所以系统的安全性在原有密匙保护的基础上又有大的提升。This paper proposed a semi-fragile watermarking algorithm based on relation measures of wavelet coefficients, the relations between neighboring coefficients in the wavelet domain are built and utilized to embed and authenticate the watermark , the proposed method is able to identify malicious changes made on the image, while quite robust to common image processing. In addition, the system is more secure because not only the watermark is protected by a private key but also building exclusive relations between coefficients.

关 键 词：数字水印 小波交换 鲁棒性 半脆弱水印 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]