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| 改进的小波域混沌数字水印算法实现 | |
| 引用本文： | 赵健,齐华,田泽,周明全. 改进的小波域混沌数字水印算法实现[J]. 光子学报, 2004, 33(10): 1236-1238 |
| 作者姓名： | 赵健 齐华 田泽 周明全 |
| 作者单位： | 西北大学电子科学系,西安,710069;西北大学计算机科学系,西安,710069;西安工业学院电子工程系,西安,710032;西北大学电子科学系,西安,710069;西北大学计算机科学系,西安,710069 |
| 基金项目： | 国家自然科学基金资助项目 (6 0 0 72 0 4 4 ) |
| 摘 要： | 在对小波域中数字水印的嵌入算法研究的基础上,利用混沌序列所特有的不可预测性,将混沌理论引入数字水印的创建中,提出了改进的小波域混沌数字水印算法,并通过仿真实现了利用Logistic映射产生的混沌序列有序的嵌入小波域数字水印的方法,该算法具有密钥唯一性、不可逆性、不可见性、鲁棒性等特点.实验证明该算法具有很好的视觉效果,是一种实际可行的数字水印算法. |
| 关 键 词： | 数字水印 混沌序列 Logistic映射 小波变换 |
| 收稿时间： | 2003-12-18 |
| 修稿时间： | 2003-12-18 |
An Improved Wavelet Watermarking Scheme Based on Logistic Chaotic Sequences |
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. An Improved Wavelet Watermarking Scheme Based on Logistic Chaotic Sequences[J]. Acta Photonica Sinica, 2004, 33(10): 1236-1238 |
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| Authors: | |
| Affiliation: | (1 Department of Electronic Science,Northwestern University,Xi’an 710069) (2 Department of Electronic Engineering,Xi’an Technology Institute,Xi’an 71)0032 (3 Department of Computer Science,Northwestern University,Xi’an 710069) |
| Abstract: | Due to the unpredictability property of chaotic sequence, chaos theory can be used in the process of creating the digital watermarking. A robust digital watermarking scheme based on Logistic chaotic sequences is proposed. The watermark is pre-processed by Logistic chaotic sequences and spread adaptive over the image wavelet domain. The experimental results demonstrate that the watermark is robust to general image processing techniques and geometric distortions. The watermarked image has good visual effect, which demonstrates that this algorithm is feasible. |
| Keywords: | Digital Watermarking Chaotic Sequence Logistic Mapping Wavelet transform |
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