基于人眼视觉特性的DCT域的信息隐藏盲提取算法  

A Blind Information Hiding in DCT Domain Based on Human Visual Characteristic

作　　者：贾玉珍[1] 王玥[1] 郭红云[2] 

机构地区：[1]南阳理工学院,南阳473004 [2]辉县市电业局,新乡453600

出　　处：《计算机与数字工程》2013年第9期1495-1497,共3页Computer & Digital Engineering

基　　金：河南教育厅重大科研攻关研究项目(编号:2012B520036)资助

摘　　要：经过对人眼视觉特性和DCT的特征分析,选用载体图像DCT系数的中频部分作为待隐藏图像的DCT系数。并根据HVS特征将载体图像的各个DCT子块分为三类,然后根据DCT子块的类型不同,自适应改变每对DCT系数的强度参数。实验结果表明此算法具有良好的隐秘性和较强的鲁棒性。此外,在秘密信息提取时,该算法不需要原始图像,实现了盲提取。Abstract By the characteristic analysis carried on Human Visual System and DCT transformation, mide frequency section in DCT coef- ficient of carrier images is selected as I）CT coefficient of the images to be hided. The DCT blocks of a cover-image are classified into three classes based on Human Visual System（HVS） characteristics, and then the parameters to be changed in each quantized DCT coefficient of a DL~ block is varied with the type of the block. The experimental results indicate that this algorithm possesses very good steganography and strong robustness. Besides, the embedding data can be extracted from the stego-image without referencing to the original cover-image.

关 键 词：DCT HVS 信息隐藏 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]