摘要
提出一种在彩色BMP图像中嵌入大容量信息的NLMB-DM算法(非线性多比特抖动调制,Nonlinear Multi-bit Dither Modulation),并在该算法的基础上借鉴RDM算法(合理抖动调制,Rational Dither Modulation)和Watson感知模型提出了两种自适应的信息隐藏算法.实验证明,这3种算法均具有较大的嵌入容量、较好的不可观测性和较小的误比特率.
A NLMB-DM (Nonlinear Multi-bit Dither Modulation) method which can embed information into BMP color images with high capacity is proposed in this paper. On the basis of NLMB-DM method, two adaptive methods which separately use the idea of RDM (Rational Dither Modulation) method and Watson visual model are brought forward. The results show that these 3 methods both have the property of high capacity, good imperceptibility and low bit error rate.
出处
《小型微型计算机系统》
CSCD
北大核心
2009年第3期484-487,共4页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(60772032)资助
关键词
信息隐藏
BMP
抖动调制
感知模型
information hiding
BMP
dither modulation
visual model