图像及音频信号中隐蔽嵌入信息存在性的统计检验  

STATISTIC TEST OF HIDDEN DATA EXISTENCE IN DIGITAL IMAGE AND AUDIO SIGNALS

作　　者：张开文[1] 张新鹏[1] 王朔中[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《电子与信息学报》2003年第7期871-877,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60072030);上海市重点学科建设基金

摘　　要：作为对信息隐藏攻击和反攻击研究的一个环节,正确判断数字图像和音频信号中是否存在隐蔽嵌入信息具有重要意义。该文提出一种统计分析方法,基于数据的时(空)域局部相关特性给出3个性能互补的判别准则,用来对视听觉无差异的两个样本进行检验,以辨别其中哪一个可能携带有隐蔽信息。实验结果表明,判别准确率令人满意。As an important aspect in the study of attacks against information hiding and the development of anti-attack techniques, this paper describes a method to compare a pair of perceptibly identical digital images or audio signals in order to single out the one that contains embedded hidden-information. By means of statistic analyses and comparison between the two signals, and making use of short-term correlativity in the space/time domain, three criteria are proposed, which are mutually complementary, and can be used in statistical tests to identify signals with embedded data. The experimental results are satisfactory.

关 键 词：图像信号 音频信号 信息隐藏 数字水印 判决准则 

分 类 号：TN911.23[电子电信—通信与信息系统]