计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2014年
7期
2305-2311
,共7页
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
無損%顏色空間的色綵變換%離散小波變換(DWT)%相鄰像素差值變換%三維混閤變換%自適應直方圖調整
무손%안색공간적색채변환%리산소파변환(DWT)%상린상소차치변환%삼유혼합변환%자괄응직방도조정
lossless%the color transformation on color space%DWT%difference of adj acent pixels value%three-dimensional mi-xing transformation%adaptive histogram adj ustment
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。
對16M真綵色圖像無損信息隱藏算法進行瞭研究，利用顏色空間變換和單箇分量色綵的小波變換，以及相鄰像素差值的三維混閤變換實現圖像的有效去冗餘和稀疏化，提高頻域高頻分量自適應直方圖調整算法的信息隱藏性能。採用KoDa Inc的16幅國際標準測試圖像進行倣真，倣真結果錶明，在直方圖峰值點自適應平移1位的情況下，SHIRCT＋DWT三維混閤變換比單獨小波變換嵌入容量平均提高128．9％，即平均多嵌入18426字節，PSNR平均提高0．66dB；YFbFr＋差值三維混閤變換比僅實施YFbFr 變換嵌入容量平均提高400％，即平均多嵌入33898字節，PSNR平均提高0．39dB。該算法是有效、實用的無損信息隱藏算法。
대16M진채색도상무손신식은장산법진행료연구，이용안색공간변환화단개분량색채적소파변환，이급상린상소차치적삼유혼합변환실현도상적유효거용여화희소화，제고빈역고빈분량자괄응직방도조정산법적신식은장성능。채용KoDa Inc적16폭국제표준측시도상진행방진，방진결과표명，재직방도봉치점자괄응평이1위적정황하，SHIRCT＋DWT삼유혼합변환비단독소파변환감입용량평균제고128．9％，즉평균다감입18426자절，PSNR평균제고0．66dB；YFbFr＋차치삼유혼합변환비부실시YFbFr 변환감입용량평균제고400％，즉평균다감입33898자절，PSNR평균제고0．39dB。해산법시유효、실용적무손신식은장산법。
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.
