基于序列动态选择的PVO可逆信息隐藏算法  

A PVO Reversible Data Hiding Algorithm Based on Sequence Dynamic Selection

作　　者：孔咏骏 张敏情[1] 彭菓玉 李天雪 KONG Yongjun;ZHANG Minqing;PENG Guoyu;LI Tianxue(Key Laboratory of Network and Information Security under the Armed Police Force,College of Password Engineering,Engineering University of the Chinese Armed Police Force,Xi′an 710086,China)

机构地区：[1]武警工程大学密码工程学院网络与信息安全武警部队重点实验室

出　　处：《郑州大学学报（理学版）》2019年第3期34-41,共8页Journal of Zhengzhou University:Natural Science Edition

基　　金：国家自然科学基金项目(61872384)

摘　　要：针对灰度图随着嵌入容量的提高而导致失真明显的问题,提出一种基于序列动态选择的可逆信息隐藏算法.新算法在动态分块像素值排序(PVO)算法基础上进行改进,对动态分类复杂像素块中可能存在的可嵌序列,利用阈值判定实现动态选择,然后对动态选择获得的可嵌序列进行I-PVO可逆信息嵌入.仿真结果表明,所提出的算法在嵌入容量和图像失真度性能方面有明显提高.In order to reduce the influence of the obvious distortion of grayscale graphs with the increase of embedding capacity, an improved reversible data hiding algorithm based on sequence dynamic selection was proposed.The new algorithm was improved on the basis of pixel value ordering(PVO)and dynamic pixel block partition,and the possible embedded sequence in complex pixel blocks was selected during the dynamic classification by adaptive thresholds.Then, I-PVO reversible information embedding was implemented for dynamically selected embedded sequences.The simulation results showed that the proposed algorithm had obvious improvement in embedding capacity and image distortion performance.

关 键 词：可逆信息隐藏 像素值排序 动态分块 序列动态选择 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]