基于整数小波变换和纠错编码的信息隐藏算法  

Information Hiding Based on Integer DWT and Error Correct Coding

作　　者：王桂艳[1] 马社祥[1] 赵朝霞[1] 

机构地区：[1]天津理工大学电子信息与通信工程学院,天津300191

出　　处：《光电子．激光》2007年第10期1248-1251,共4页Journal of Optoelectronics·Laser

基　　金：天津理工大学天津市薄膜电子与通信器件实验室资助.

摘　　要：针对在处理及传输含秘图像的过程中存在丢失或破坏隐秘信息的问题,提出了一种鲁棒性较强的信息隐藏算法。将隐秘信息纠错编码(ECC)后用混沌伪随机序列进行调制,然后将调制后的信息嵌入到整数小波变换(DWT)后的较低频且幅度较小的系数中,通过提升和整数DWT,减少了在图像小波分解及重构过程中产生的误差。实验表明,该算法具有很强的抗破译性,对于抵抗各种噪声、压缩及滤波等攻击具有更好的鲁棒性。Stego-image has to experience multiple kinds of attacks such as compression and noise during data processing and transporting, so the stego-signal may be lost or destroyed. According to this problem, we present a steganography algorithm with strong robustness. Stego-signal is modulated by chaos series after error correct coding（ECC） ,and then embedded in the low frequency and small magnitude coefficents of the integer wavelet transform. To avoid errors during the image DWT decomposition and reconstruction, lift and integer DWT is used. The experiments show that this algorithm is robust against attacks such as noises,compression and filtering.

关 键 词：信息隐藏 混沌伪随机序列 整数小波变换(DWT) 纠错编码(ECC) 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]