自动化学报2005，Vol.31Issue(5)：705-712,8.
基于小波域HMM模型的自适应图像水印算法
An Adaptive Image Watermarking Algorithm Based on HMM in Wavelet Domain
摘要
Abstract
An adaptive image watermarking algorithm based on HMM in wavelet domain is proposed. The algorithm is abstracted as follows: 1) the vector HMM model is employed to describe the statistical characteristic of image wavelet coefficients and the resulting HMM based detector achieves significant improvements in performance compared to the conventional correlation detector;2) adaptive watermark embedding based on HVS analysis; 3) a novel embedding strategy which is optimized for the HMM tree structure is adopted; 4) the strategy of dynamical threshold is applied in watermark detection. High robust results are achieved against Stirmark attacks, such as JPEG compression, adding noise, median cut and filter.关键词
Watermark/hidden markov model (HMM)/blind detection/HVSKey words
Watermark/hidden markov model (HMM)/blind detection/HVS分类
信息技术与安全科学引用本文复制引用
张荣跃,倪江群,黄继武..基于小波域HMM模型的自适应图像水印算法[J].自动化学报,2005,31(5):705-712,8.基金项目
Supported by National Natural Science Foundation of P. R. China (60133030, 60172067), Foundation ofNational Education Ministry of P. R. China （60133030, 60172067）
