| 改进的PVO-k可逆信息隐藏算法 |
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| 引用本文： | 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. DOI: 10.3969/j.issn.0255-8297.2016.05.013 |
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| 作者姓名： | 闫兵 柏森 阳溢 季晓勇 |
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| 作者单位： | 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 |
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| 基金项目： | 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 |
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| 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。
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| 关 键 词： | 可逆信息隐藏 像素值排序 像素块选择 |
| 收稿时间： | 2016-08-02 |
| 修稿时间： | 2016-08-18 |
Improved PVO-k Algorithm for Reversible Data Hiding |
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| 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. DOI: 10.3969/j.issn.0255-8297.2016.05.013 |
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| Authors: | YAN Bing BAI Sen YANG Yi JI Xiao-yong |
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| Affiliation: | 1. Department of Information Engineering, Chongqing Communication Institute, Chongqing 400035, China;2. School of Software, Chongqing Institute of Engineering, Chongqing 400035, China |
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| 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. |
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| Keywords: | pixel-block-selection reversible data hiding pixel-value-ordering (PVO) |
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