基于最优低位替换和Tabu搜索的图像隐藏  

Image Hiding by Optimal LSBs Substitution and Tabu Search

作　　者：张鸿宾[1] 陈坤[1] 

机构地区：[1]北京工业大学计算机学院,北京100022

出　　处：《自动化学报》2004年第2期306-315,共10页Acta Automatica Sinica

基　　金：国家自然科学基金(60075002);北京市自然科学基金(4992002);北京市教委科技发展计划;"863"计划(2001AA144080)资助

摘　　要：提出一种图像隐藏算法,它将重要图像隐藏在另一宿主图像的LSBs(least significantbits)中.为了增加图像的隐藏量,改善低位替换后宿主图像的质量,该文以评价图像质量的峰值信噪比(PSNR)为准则函数,采用Tabu搜索来求解最优的低位替换.实验结果表明,和简单的低位替换方法相比,该文算法即使用较多的低位进行替换也不会产生引人注意的宿主图像质量的变化,在图像的隐藏量和图像质量上都有很大的改进.An algorithm for image hiding is presented to embed important image into the k rightmost LSBs( least significant bits) of the host image. To increase the quantity of the embedded data and improve the quality of embedding result, the algorithm finds the optimal LSBs substitution by Tabu Search(TS) with the criterion function PSNR. Experimental results show that compared with simple LSBs substitution, the proposed algorithm does not seriously degrade the quality of embedding result even when more LSBs are used and can make a great improvement in both the quantity of the embedded data and the quality of the host image.

关 键 词：图像隐藏算法 TABU搜索 信噪比 数据隐藏 图像质量 图像处理 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]