Reversible Watermarking in JPEG Images Based on Modified RZL Codes and Histogram Shift  

作　　者：CHEN Biao ZHANG Weiming YU Nenghai 

机构地区：[1]Department of Electronic Engineering and Information Science, University of Science and Technology of China [2]Department of Information Research, Zhengzhou Information Science and Technology Institute

出　　处：《Wuhan University Journal of Natural Sciences》2013年第2期126-132,共7页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(61170234and60803155);the National Science and Technology Major Project of China(2010ZX03004-003);the High-Tech Research and Development Program of China(863program)(2009AA012201)

摘　　要：Reversible watermarking has extensive applications in fields such as medical data management and forensic enforcement. In this article, we propose a modified reverse zero-run length （RZL） coding method for reversible watermarking, which intro- duces fewer modifications to cover than previous ones under the same embedding rate. By combining the coding method with his- togram shift and quantization table modification strategy, we pro- pose a novel reversible data hiding algorithm for JPEG images. Compared with previous art, when embedding the same payload, our method has an improvement of at least 2 dB in stego image＇s quality, which proves the effectiveness and advantage of our algo- rithm.Reversible watermarking has extensive applications in fields such as medical data management and forensic enforcement. In this article, we propose a modified reverse zero-run length （RZL） coding method for reversible watermarking, which intro- duces fewer modifications to cover than previous ones under the same embedding rate. By combining the coding method with his- togram shift and quantization table modification strategy, we pro- pose a novel reversible data hiding algorithm for JPEG images. Compared with previous art, when embedding the same payload, our method has an improvement of at least 2 dB in stego image＇s quality, which proves the effectiveness and advantage of our algo- rithm.

关 键 词：reversible watermarking JPEG images image au-thentication PAYLOAD PSNR 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]