| 基于小波域HMM模型的自适应图像水印算法 |
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| 引用本文： | 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. 自动化学报, 2005, 31(5): 705-712. |
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| 作者姓名： | 张荣跃 倪江群 黄继武 |
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| 作者单位： | 1.Department of Electronic and Communication Engineering, Sun Yat-Sen University, Guangzhou 510275 |
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| 基金项目： | Supported by National Natural Science Foundation of P. R. China （60133030, 60172067）, Foundation of National Education Ministry of P. R. China |
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| 摘 要： | 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.
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| 关 键 词： | Watermark hidden markov model (HMM) blind detection HVS |
| 收稿时间： | 2003-11-26 |
| 修稿时间： | 2005-06-26 |
An Adaptive Image Watermarking Algorithm Based on HMM in Wavelet Domain |
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| ZHANG Rong-Yue, Ni Jiang-Qun, HUANG Ji-Wu. An Adaptive Image Watermarking Algorithm Based on HMM in Wavelet Domain. ACTA AUTOMATICA SINICA, 2005, 31(5): 705-712. |
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| Authors: | ZHANG Rong-yue Ni Jiang-Qun HUANG Ji-wu |
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| Affiliation: | 1. Department of Electronic and Communication Engineering, Sun Yat-Sen University, Guangzhou 510275 |
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| Abstract: | An adaptive image watermarking algorithm based on HMM in wavelet domain is pro- posed.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. |
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| Keywords: | Watermark hidden markov model(HMM) blind detection HVS |
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