一种抗JPEG压缩和掩密分析的空间域图像信息隐藏算法  

An Image Spatial Information Hiding Algorithm against JPEG Compression and Steganalysis

作　　者：阳溢[1] 柏森[1] 柳杨[2] 史名一 

机构地区：[1]重庆通信学院应急通信重庆市重点实验室 [2]重庆通信学院数学教研室 [3]71521部队

出　　处：《西南科技大学学报》2011年第4期79-82,共4页Journal of Southwest University of Science and Technology

摘　　要：如何有效对抗掩密分析是信息隐藏研究的一个重要方向。提出了一种抗JPEG压缩和掩密分析的空间域图像信息隐藏算法:首先对载体图像和秘密图像分别置乱,然后对载体图像分块,在每块子图像中重复嵌入1 bit信息;提取秘密信息时,先对含密图像置乱恢复和分块,然后在每块子图像中按照多数优先的原则提取1 bit信息。实验表明,该算法不仅对常见的JPEG压缩具有较好的鲁棒性,而且能有效对抗信息量估计分析。How to fight against steganalysis effectively has become an important research of information hiding. This paper proposed an image spatial information hiding algoithm against JPEG compression and steganalysis. In the algorithm, firstly the carrier image and the secret image were scrambled respectively, and then the carrier image was divided into sub-blocks, lastly one bit information was embedded into ever- y sub-block. For extracting, the steganographic image was recovered and divided into sub-blocks. Then one bit information was obtained from every sub-block by the majority principle. Experiments have shown that the algorithm can not only resist information estimate method and is also robust against JPEG compression.

关 键 词：信息隐藏 JPEG压缩 掩密分析 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]