基于相邻均值差直方图的高容量可逆信息隐藏算法  

High-capacity reversible data hiding based on neighboring mean difference histogram

作　　者：熊涛 丁海洋 李雅静[1] Xiong Tao;Ding Haiyang;Li Yajing(College of Information Engineering,Beijing Institute of Graphic Communication,Beijing 102600,China;Information Security Center,Beijing University of Posts&Telecommunications,Beijing 100876,China)

机构地区：[1]北京印刷学院信息工程学院,北京102600 [2]北京邮电大学信息安全中心,北京100876

出　　处：《计算机应用研究》2025年第4期1217-1222,共6页Application Research of Computers

基　　金：国家自然科学基金项目(62472040);北京市教委科研项目(KM202110015004);北京市高等教育学会项目(MS2023204);北京市数字教育研究课题(BDEC2023619095);北京印刷学院博士启动金项目(27170120003/020,27170122006);北京印刷学院科研基础研究一般项目(Ec202201);北京印刷学院青年卓越项目(Ea202411)。

摘　　要：为解决可逆信息隐藏(reversible data hiding,RDH)容量受限的问题,提出了一种基于相邻均值差的可逆信息隐藏(neighboring mean difference reversible data hiding,NMDRDH)算法。相邻均值差(neighboring mean diffe-rence,NMD):计算两个相邻数值的平均值与其中一个数值的差值。NMD将差值最小化,使数据更加集中。首先将图像进行分块,然后在分块上应用NMD生成差值直方图,最后通过平移差值直方图,利用峰值点来嵌入秘密信息。由于NMD使生成的差值直方图具有更多的峰值点,所以该方法可嵌入更多的秘密信息。实验结果表明,采用本算法,原始图像恢复率和秘密信息提取正确率均为100%;相比于经典差值直方图平移方法,本算法的嵌入容量提升了43.7%;本算法在保证高容量的同时,PSNR达到42 dB以上,确保了嵌入图像失真较小。To address the issue of limited capacity in reversible data hiding(RDH),this paper proposed a neighboring mean difference reversible data hiding(NMDRDH)algorithm.The neighboring mean difference(NMD)calculated the difference between the average of two adjacent values and one of the values,minimizing the difference and making the data more concentra-ted.Firstly,it divided the image into blocks,then applied NMD on the blocks to generate a difference histogram.Finally,it embedded the secret information by shifting the difference histogram and utilizing the peak points.Because NMD generated a difference histogram with more peak points,this method could embed more secret information.Experimental results show that this algorithm achieves 100% accuracy in both original image recovery and secret information extraction.Compared to the classical difference histogram shifting method,this algorithm increases the embedding capacity by 43.7%.Moreover,while ensuring high capacity,the PSNR reaches above 42 dB,ensuring minimal distortion of the embedded image.

关 键 词：相邻均值差 可逆信息隐藏 直方图平移 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]