Improved Dual-image Quality with Reversible Data Hiding Using Translocation and Switching Strategy  

作　　者：Chin-Feng Lee Kuo-Chung Chan 

机构地区：[1]Department of Information Management,Chaoyang University of Technology,Taichung,41349,Taiwan

出　　处：《Computer Systems Science & Engineering》2023年第2期1551-1566,共16页计算机系统科学与工程（英文）

摘　　要：Dual-image reversible data hiding(RDH)is a technique for hiding important messages.This technology can be used to safely deliver secret mes-sages to the recipient through dual images in an open network without being easily noticed.The recipient of the image must receive the two stego-images before the secret message can be completely retrieved.Imperceptibility is one of the main advantages of data hiding technology;to increase the imperceptibility,the quality requirements of the stego-images are relatively important.A dual ste-ganographic image RDH method,called a DS-CF scheme that can achieve a bet-ter steganographic image quality using the center folding(CF)strategy.In this paper,we developed a translocation and switching strategy(TaS)to shorten the distances between the stego-pixel coordinates and the cover pixel coordinates after information being hidden.Compared with the DS-CF scheme,our proposed DS-TaS scheme can effectively improve the quality of the steganographic images at the same level of embedding capability.The experimental results show that the PSNR of our DS-TaS scheme at k=1 was 55.66 dB,which is an increase of 1.5 dB,and is 51.43 dB for k=2,46.66 dB for k=3,and 40.91 dB for k=4.In addition,the PSNR values of the stego images was increased by 1.5,0.29,0.29,and 0.19 dB,respectively.This shows that our proposed dual-image RDH method can optimize the visual quality of the stego-images and is better than many other dual-image RDH techniques.

关 键 词：Information hiding reversible data hiding(RDH) dual-image RDH center folding(CF)strategy 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]