改进的PVO-k可逆信息隐藏算法

doi:10.3969/j.issn.0255-8297.2016.05.013

应用科学学报 ›› 2016, Vol. 34 ›› Issue (5): 605-615.doi: 10.3969/j.issn.0255-8297.2016.05.013

改进的PVO-k可逆信息隐藏算法

闫兵¹, 柏森^1,2, 阳溢¹, 季晓勇¹

1. 重庆通信学院信息工程系, 重庆 400035;
2. 重庆工程学院软件学院, 重庆 400035

收稿日期:2016-08-02 修回日期:2016-08-18 出版日期:2016-09-30 发布日期:2016-09-30
通信作者: 柏森,教授,研究方向:信息隐藏、图像加密,E-mail:baisencq@126.com E-mail:baisencq@126.com
基金资助:
国家自然科学基金（No.61272043）；重庆市基础与前沿研究计划项目基金（No.cstc2013jjB40009）；应急通信重庆市重点实验室能力提升项目基金（No.cstc2014pt-sy40003）；重庆市研究生科研创新项目基金（No.cys14239）资助

Improved PVO-k Algorithm for Reversible Data Hiding

YAN Bing¹, BAI Sen^1,2, YANG Yi¹, JI Xiao-yong¹

1. Department of Information Engineering, Chongqing Communication Institute, Chongqing 400035, China;
2. School of Software, Chongqing Institute of Engineering, Chongqing 400035, China

Received:2016-08-02 Revised:2016-08-18 Online:2016-09-30 Published:2016-09-30

摘要/Abstract

摘要：

近年来，一些学者结合像素值排序（pixel-value-ordering，PVO）提出了一系列可逆信息隐藏算法和改进算法。为此，针对其中PVO-k算法存在的缺陷进行改进，提出了改进的PVO-k可逆信息隐藏算法。改进后的嵌入规则使算法更适应平滑像素块的信息嵌入，改进的像素块选择策略也保证了载体图像的高保真度。实例分析和实验验证表明，该算法在隐藏容量和保真度方面都有提高，特别是对较平滑图像优越性较为明显。

关键词: 可逆信息隐藏, 像素值排序, 像素块选择

Abstract:

In recent years, a number of reversible hiding information (RDH) algorithms based on pixel-value-ordering (PVO) and some revised versions have appeared. This paper proposed an improved RDH method to overcome drawbacks in the PVO-k algorithm. The proposed improvement is more suitable for the information embedded into flat blocks due to the improved embedding rules. High fidelity of the stego-image is guaranteed by using the improved pixel-block-selection. Experimental results show that the proposed method has better performance in terms of embedding capacity and image fidelity as compared with PVO-k, especially for relatively smooth images.

Key words: pixel-block-selection, reversible data hiding, pixel-value-ordering (PVO)

中图分类号:

TP309.2

闫兵, 柏森, 阳溢, 季晓勇. 改进的PVO-k可逆信息隐藏算法[J]. 应用科学学报, 2016, 34(5): 605-615.

YAN Bing, BAI Sen, YANG Yi, JI Xiao-yong. Improved PVO-k Algorithm for Reversible Data Hiding[J]. Journal of Applied Sciences, 2016, 34(5): 605-615.

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改进的PVO-k可逆信息隐藏算法

Improved PVO-k Algorithm for Reversible Data Hiding

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