三维混合变换彩色图像无损信息隐藏算法研究  

Lossless information hiding algorithm research of color image on three-dimensional mixing transformation

作　　者：姜卓[1] 解成俊[1] 

机构地区：[1]北华大学计算机科学技术学院,吉林吉林132021

出　　处：《计算机工程与设计》2014年第7期2305-2311,共7页Computer Engineering and Design

基　　金：国家自然科学基金项目(61072111);吉林省科技厅重点基金项目(20110360;20100530);吉林省教育厅十二五重点基金项目(2013161)

摘　　要：对16M真彩色图像无损信息隐藏算法进行了研究,利用颜色空间变换和单个分量色彩的小波变换,以及相邻像素差值的三维混合变换实现图像的有效去冗余和稀疏化,提高频域高频分量自适应直方图调整算法的信息隐藏性能。采用KoDa Inc的16幅国际标准测试图像进行仿真,仿真结果表明,在直方图峰值点自适应平移1位的情况下,SHIRCT+DWT三维混合变换比单独小波变换嵌入容量平均提高128.9%,即平均多嵌入18426字节,PSNR平均提高0.66dB;YFbFr+差值三维混合变换比仅实施YFbFr变换嵌入容量平均提高400%,即平均多嵌入33898字节,PSNR平均提高0.39dB。该算法是有效、实用的无损信息隐藏算法。1 6 M true color image lossless information hiding algorithm was researched.The transformation on color space,the DWT transformation on single color component and the three-dimensional mixed transformation on difference of adj acent pixels value were used to realize image redundancy reduction and to sparse more effective.This algorithm could improve information hi-ding performance of the high frequency component adaptive histogram adj ustment algorithm in frequency domain.The simulation experimental results on 1 6 KoDa Inc international standard test images showed that the embedding capacity of image increased by 128. 9%on average using the SHIRCT＋DWT three-dimensional mixing transformation method compared with the DWT trans-form on color component when adaptive histogram peaks shifted 1bit,which equaled to an increase of 18426bytes embedment on average and the PSNR average increased by 0. 66dB.When using the YFbFr＋three-dimensional difference mixing transform method,the embedding capacity increased by 400%on average,comparing with the only YFb Fr transformation implemented si-tuation,it was equal to an increase of 33898bytes on average,and the PSNR averagely increased by 0. 39dB.So this algorithm was an effective and practical lossless information hiding algorithm.

关 键 词：无损 颜色空间的色彩变换 离散小波变换(DWT) 相邻像素差值变换 三维混合变换 自适应直方图调整 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]