摘要
在数字化技术和网络技术迅速发展的今天,信息安全显得越来越重要,数字水印技术在版权保护方面的应用已成为信息安全领域的一个热点。利用小波变换和人类视觉特性的相似性,提出了一个基于块的小波域图像数字水印方案。该方案结合加密技术,通过密钥控制水印信号的嵌入,在不影响图像的感知质量的同时,对于常见攻击具有较好的稳健性,并且在水印提取过程中不需要原始图像。
Nowadays, information sees an increasing need for security, coupled with the rapid development of the digital and networks technologies. The digital watermarking technology is becoming a hot button issue in the field of information security, due to its application in copy right protection. The researches on the similarity between the characters of Human Visual System and the characters of Wavelet Transform lead to a new insight of digital watermarking algorithm based on block and DWT. This scheme, using the encrypting technology, controls the course of watermark embedding by keys, has its own robustness without much impact on the origin picture. And the origin picture is not necessary in the course of watermark extraction.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2004年第1期15-18,25,共5页
Journal of Wuhan University of Technology：Information & Management Engineering
基金
北京大学视觉与听觉信息处理国家实验室基金资助项目(2003005).
关键词
数字水印
小波变换
版权保护
digital watermark
wavelet transform
copyright protection
