图像为载体的信息隐藏数据量研究  

Study of Preferable Quantity of Hiding Data in An Image

作　　者：王冰[1] 职秦川[1] 张仲选[1] 耿国华[1] 周明全[1] 

机构地区：[1]西北大学计算机科学系,西安710069

出　　处：《计算机辅助设计与图形学学报》2004年第7期999-1004,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金 ( 60 2 710 3 2 )资助

摘　　要：信息隐藏量、透明性及鲁棒性是信息隐藏最重要的特性 文中以 2 5 6级灰度图像为载体 ,在第k(k =0 ,1,2 ,… ,7)个位面和第 0～k多个位面 ,用LSB方法分别隐藏二值图像和汉字文本 给出了 2 5 6级灰度图像在单个位面和多个位面隐藏汉字文本及其他数字信息的算法 ,并给出在 2 5 6级灰度图像的单个位面隐藏二值图像和多个位面隐藏汉字文本的实验结果 ,对隐藏图像的情形做了攻击性实验 ,定量给出了各种隐藏方案中信息隐藏量。Relationship among the quantity of hiding data, their invisibility, and robustness of hiding in an image is studied A binary image and Chinese characters were embedded into a 256 gray level image with LSB method The algorithm to hide the data both in single bit plane and multi bit plane of the image are given Experiments are carried out to hide a binary image into each bit plane (8 bit planes totally) of the image, and hide Chinese characters into multi bit plane (0,0～1,0～2,0～3,0～4,0～5,0～6,0～7) of the same image Attack experiments are also made with noise adding, filtering and JPEG compression Experimental results show the relationship among the quantity of hidden data, invisibility and robustness for different single bit plane and different multi bit plane respectively Some suggestions are given about the preferable hiding scheme to meet various application needs

关 键 词：信息隐藏 信息安全 图像处理 位平面 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]