一种DCT域的大容量图像隐写算法  

A High-Capacity Algorithm of DCT Steganography in Images

作　　者：刘虎[1] 袁海东[1] 张艳峰[2] 

机构地区：[1]信息工程大学电子技术学院,河南郑州450004 [2]武警乌鲁木齐指挥学院,新疆乌鲁木齐830001

出　　处：《计算机安全》2012年第1期34-37,共4页Network & Computer Security

摘　　要：离散余弦变换(DCT)域隐写适用范围广且安全性高,但其隐藏容量小、难以用于隐藏储存和隐蔽通信等应用场合。为了弥补这一缺陷,提出了一种基于位平面复杂度分割(BPCS)隐写的DCT域大容量隐写算法。实验结果表明,新算法较好地实现了隐写的不可见性,与传统DCT域隐写算法相比,隐藏容量也得到了明显的提高。The steganography in DCT filed is used widely and safely,but its hiding capacity is too low to apply in covert storage and covert communication.To solve the problem,this paper presents a high-capacity algorithm of DCT steganography in images.Experiment results show that the new algorithm can improve the fine imperceptibility of steganography.In addition,it has a higher hiding capacity obviously than traditional algorithms.

关 键 词：信息隐藏 隐写 离散余弦变换 位平面复杂度分割 隐藏容量 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]