摘要
文章提出一种小波域的自恢复水印算法,利用零树结构对宿主图像进行压缩编码,对压缩编码后的数据进行置乱得到自恢复水印去替换小波域的高频部分,认证水印对小波域的低频部分进行均值量化实现嵌入。通过实验仿真证明,该算法能恢复出被篡改位置的真实图像内容。
A self-correcting watermark algorithm based on wavelet domain is presented. The zero-tree coding to compress the image is used and self-correlative watermark data is gained by replacing the high frequency of the image＇s wavelet domain. The average value of the four adjacent wavelet coefficients with quantization is imbed by the authentication watermark. The simulation and experiment proves the good ability of the picture of the juggled position can be accurately located by the algorithm.
出处
《四川理工学院学报（自然科学版）》
CAS
2009年第4期104-106,共3页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
关键词
数字水印
篡改检测
自恢复
digital watermarking
tamper detection
self-recovery
