混沌序列增强LSB图像隐藏算法的鲁棒性分析  

Robustness Analysis of LSB Image Hiding Algorithm Enhanced by Chaotic Sequence

作　　者：张艳玲[1] 王允锋 

机构地区：[1]西安工业大学电子信息工程学院,西安710021 [2]西安旭泰电气技术有限公司,西安710054

出　　处：《西安工业大学学报》2015年第10期850-854,共5页Journal of Xi’an Technological University

基　　金：西安市科技计划项目(CXY1442(1));陕西省教育厅科研项目(14JK1355)

摘　　要：为消除最不显著位(LSB)图像隐藏算法隐藏图像易被还原的缺陷,基于图像的高保密要求,提出了一种混沌和LSB相结合的图像隐藏算法.利用人眼视觉冗余特性,根据混沌序列的随机性,生成了6个整数随机序列.依次对应载体图像嵌入点R、G、B三个分量的行列坐标,通过秘密图像随机地嵌入到载体图像嵌入点的最低位中,实现了秘密图像信息的隐藏.实验结果表明:混沌增强LSB数字图像隐藏算法增强了图像隐藏的抗干扰能力,其鲁棒性和不可见性优于传统LSB算法,对噪声攻击和剪切攻击具有良好的鲁棒性.For the high security requirement of image, a new image hiding algorithm based on chaos and LSB is proposed to eliminate the defect of LSB image hiding algorithm,in which the hidden image is easy to be cracked. Making full use of human visual characteristics of redundancy, according to the randomness of chaotic sequences, 6 corresponding integer random sequences are generated which decide the rows and columns of R and G and B components of the embedded point of carrier image. Finally, the secret image information is embedded into the lowest point of the embedded point of carrier image in order to hide the secret image information. The random selection of embedded points enhances the shear resistance of the algorithm. Experiments show that the algorithm enhances the anti-iamming ability of the image, has good robustness against the noise attack and the shear attack, and its robustness and invisibility are better than that of the traditional LSB algorithm.

关 键 词：混沌序列 最不显著位(LSB) 图像隐藏 剪切攻击 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]