一种基于混沌加密和小波变换的数字水印技术研究  

Study of Digital Watermarking Technology Based on Chaotic Encryption and Wavelet Transform

作　　者：蔡正保[1] 

机构地区：[1]安徽国防科技职业学院,安徽六安237011

出　　处：《廊坊师范学院学报（自然科学版）》2016年第2期17-21,共5页Journal of Langfang Normal University(Natural Science Edition)

基　　金：安徽省自然科学研究重点项目(KJ2016A116);安徽国防科技职业学院基金项目(gf2015jxyjz02;gf2015mooc08)

摘　　要：常见数字水印技术在抗攻击能力方面存在不足。在对混沌加密技术和小波变换技术进行分析总结基础上,提出改进的基于混沌加密和小波变换的数字水印算法。运用混沌加密技术对数字水印进行置乱处理,再将置乱的水印信息嵌入到经过小波变换处理的载体图像中。算法能够实现对原始载体的预处理以及对数字水印嵌入和提取的合理处理和有效控制。经实验验证,算法效率高且易于实现,对噪声攻击以及剪切攻击等均体现出良好的鲁棒性,同时水印的不可见性好。Common digital watermarking technology is insufficient in the anti - attack capability. Based on the analysis and summarization of chaotic encryption and wavelet transform, an improved digital watermarking algorithm based on chaotic encryption and wavelet transform is proposed. Chaotic encryption is used to deal with the digital watermark and the scrambling watermark information is embedded into the cartier image which is processed by the wavelet transform. The algorithm can realize the pretreatment of the original carrier and the reasonable processing and effective control of the embedding and extraction of the digital watermark. Verified by experiment, the algorithm is efficient and easy to implement. It has good robustness to noise and shear attacks, and the watermark is invisible.

关 键 词：混沌 加密 小波变换 水印 不可见性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]