摘要
随着多媒体和网络技术的迅猛发展和广泛应用,多媒体安全和版权保护的问题已引起了社会的极大关注,而数字水印技术已经成为实现版权保护的有效途径。文中提出了一种基于提升小波变换的盲水印算法,利用提升小波变换将原始图像进行3层多分辨率分解,根据各个层次相应位置的提升小波系数排序情况和密钥中{1}元素的位置来决定水印嵌入的位置,在水印提取时根据密钥中{1}的位置可以实现盲水印提取,这种算法简单、可靠,实验证明具有较好的效果。
With the fast development and wide application of multimedia and network technologies, problems of multimedia security and copyright protection have aroused social attention. And now digital watermark technology has been an efficient approach to copyright protection. This paper presented a kind of blind watermarking algorithm based on liking wavelet transform. The original image was decomposed byliKing wavelet transform for 3 layers, and the watermark series was embedded depending on every level lifting wavelet coefficients of corresponding locations and the locations of { 1 } in the secret key. The watermark could be extracted according to the locations of {1} in the secret key, and that is blind watermarking extracting. This method is simple and reliable, and is proved to have a good robust character by experiments.
出处
《信息技术》
2009年第12期21-23,94,共4页
Information Technology
基金
国家重点实验室开放基金项目(SKLRS200702)
关键词
盲水印
提升小波变换
M-序列
密钥
blind watermark
lifting wavelet transform
M-sequence
secret key
作者简介
贾朱植（1978-），女，讲师，硕士，主要研究领域为数字图像处理，数字水印技术。
