可提高嵌入容量的密文医学图像可逆数据隐藏方法

doi:10.3969/j.issn.0255-8297.2015.06.008

应用科学学报 ›› 2015, Vol. 33 ›› Issue (6): 644-654.doi: 10.3969/j.issn.0255-8297.2015.06.008

可提高嵌入容量的密文医学图像可逆数据隐藏方法

姜飞¹, 李军², 钱振兴¹

1. 上海大学通信与信息工程学院, 上海 200444;
2. 苏州大学第一附属医院, 江苏苏州 215006

收稿日期:2015-06-29 修回日期:2015-10-20 出版日期:2015-11-30 发布日期:2015-11-30
通信作者: 李军,副研究员,研究方向:医学图像处理,E-mail:lijun8499@aliyun.com E-mail:lijun8499@aliyun.com
基金资助:
国家自然科学基金(No.61572308);上海市青年科技启明星人才计划基金(No.14QA1401900)资助

Reversible Data Hiding in Encrypted Medical Images with Improved Embedding Capacity

JIANG Fei¹, LI Jun², QIAN Zhen-xing¹

1. School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China;
2. First Affiliate Hospital, Suzhou University, Suzhou 215006, Jiangsu Province, China

Received:2015-06-29 Revised:2015-10-20 Online:2015-11-30 Published:2015-11-30

摘要/Abstract

摘要： 提出一种密文图像中的可逆数据隐藏系统,可在加密的医学图像中嵌入附加信息,还可无损恢复原始图像.系统包括发送端、服务器端和接收端三部分,发送端使用流密码对原始医学图像进行加密并发送到服务器端;服务器端使用基于循环移位的方法在密文中隐藏附加信息,同时不改变密文图像的数据量;接收端下载含附加信息的密文图像,不仅可提取附加信息,还可无损恢复原始医学图像.与传统方法相比,该方法提高了密文中的数据嵌入容量.

关键词: 信息隐藏, 密文数据隐藏, 图像加密, 无损恢复

Abstract: This paper proposes a scheme of reversible data hiding for encrypted medical images. The proposed scheme contains three parts:a sender, a server and a receiver. The content owner encrypts the original medical image using a stream cipher and uploads the encrypted image to the server. The data-hider on the server hides additional data into the encrypted medical image using a circulating shift method that preserves the size of the encrypted image. The receiver downloads the encrypted image containing additional data, extracts the additional data precisely, and recovers the original medical image losslessly. Compared with some previous schemes, the proposed method has larger embedding capacity.

Key words: information hiding, encrypted data hiding, image encrypted, recovery lossless

中图分类号:

TN911.73

姜飞, 李军, 钱振兴. 可提高嵌入容量的密文医学图像可逆数据隐藏方法[J]. 应用科学学报, 2015, 33(6): 644-654.

JIANG Fei, LI Jun, QIAN Zhen-xing. Reversible Data Hiding in Encrypted Medical Images with Improved Embedding Capacity[J]. Journal of Applied Sciences, 2015, 33(6): 644-654.

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可提高嵌入容量的密文医学图像可逆数据隐藏方法

Reversible Data Hiding in Encrypted Medical Images with Improved Embedding Capacity

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