多重秘密共享的DCT域二值图像隐藏方案  

Binary Image Hiding Algorithm Based on Multi-secret Sharing and DCT

作　　者：曹如冰[1] 艾斯卡尔[1] 

机构地区：[1]新疆大学信息科学与工程学院,乌鲁木齐830046

出　　处：《计算机科学》2011年第10期270-272,284,共4页Computer Science

基　　金：国家自然科学基金项目(61065001);新疆维吾尔自治区科技厅少数民族特殊培养计划项目(201023116)资助

摘　　要：研究了一种新的二值图像隐藏方案,即将一幅二值图像隐藏在多幅载体图像中。针对二值图像取值形式为二值的特点,该方案第一次把变长游程编码算法、多重秘密共享思想和DCT域的信息隐藏算法结合在一起,并根据载体图像的最大隐藏信息量把秘密图像游程长度序列分成n块,由n个密钥控制并分别隐藏在n幅载体图像中。实验表明,该算法在不明显引入修改痕迹的情况下,可显著提高安全性和鲁棒性,并且可以无损还原。A new binary image hiding scheme was proposed,which hided a binary image into several cover images.Based on the characteristics of the binary image whose value is 0 or 1,this scheme combined multi-secret sharing with RLE algorithm and DCT algorithm for the first time.According to the biggest size of cover images,this scheme divided RLE length of the shadow image into the n blocks,and then embedded the n blocks of secret information in cover images under the control of n keys.Experiment demonstrates that this scheme sufficiently increases the security of secret information and improves the robustness and acheves the better recovery effect.

关 键 词：多重秘密共享 二值图像 离散余弦变换 图像隐藏 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]