电子学报 ›› 2006, Vol. 34 ›› Issue (10): 1817-1822.

• 论文 • 上一篇    下一篇

多小波变换域内基于扩频和量化的混合水印研究

朱 岩1, 杨永田2, 冯登国3   

  1. 1. 北京大学计算机科学技术研究所,北京 100871;2. 哈尔滨工程大学计算机科学与技术 学院,黑龙江哈尔滨 150001;3. 中科院研究生院信息安全国家重点实验室,北京 100049
  • 收稿日期:2005-03-15 修回日期:2006-05-06 出版日期:2006-10-25 发布日期:2006-10-25

Research on Hybrid Watermarking Based on Spread Spectrum and Quantization in Multiwavelet Domain

ZHU Yan1, YANG Yong-tian2, FENG Deng-guo3   

  1. 1. Institute of Computer Science and Technology,Peking University,Beijing 100871,China;2. Computer Science and Technology School,Harbin Engineering University,Harbin,Heilongjiang 150001,China;3. State Key Laboratory of Information Security,The Chinese Academy of Sciences,Beijing 100049,China
  • Received:2005-03-15 Revised:2006-05-06 Online:2006-10-25 Published:2006-10-25

摘要: 考虑到扩频和量化技术存在互补性,本文构造一种扩频和量化混合模型,并提出了一种图像多小波变换域内基于扩频和量化的混合数字水印方案,通过理论分析给出了扩频长度、信道容量、检测错误率等参数间的关系,实验结果表明算法实现了水印鲁棒性前提下的水印容量最大化的目的.

关键词: 数字水印, 脏纸模型, 扩频, SCS, 多小波变换

Abstract: Considering both of Spread spectrum and quantization can complement,a hybrid-watermarking model is constructed by integrating spread spectrum with quantization technique.Furthermore,a novel hybrid-watermarking scheme is proposed based on spread spectrum and quantization in multiwavelet domain.The performance analysis is used to describe the interrelations among length of sequence,channel capability,detection error rate and so on.Moreover,the experimental results demonstrate that the proposed algorithm provides the capacity maximization under the precondition of robustness.

Key words: digital watermarking, dirty paper model, spread spectrum, scalar Costa scheme, multiwavelet transform

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