具有对比度增强效果的可逆信息隐藏研究进展与展望  

Research and prospect of reversible data hiding method with contrast enhancement

作　　者：杨杨[1,2] 张卫明[1] 侯冬冬[1] 王辉[1] 俞能海[1] 

机构地区：[1]中国科学技术大学中国科学院电磁空间信息重点实验室,安徽合肥230027 [2]安徽大学电子信息工程学院,安徽合肥230039

出　　处：《网络与信息安全学报》2016年第4期12-20,共9页Chinese Journal of Network and Information Security

基　　金：国家自然科学基金资助项目(No.61572452; No.61502007);中国科学院战略性先导科技专项子课题基金资助项目(No.XDA06030601);安徽省自然科学基金资助项目(No.1608085MF125);中国博士后科学基金资助项目(No.2015M582015);安徽大学博士科研基金资助项目(No.J01001319)~~

摘　　要：可逆信息隐藏技术可以确保提取信息后无损恢复载体,该技术可用于军事、司法、医学等图像的认证或标注,在这些应用中图像很敏感,轻微的修改也是不允许的。尤其在医学图像中,可逆信息隐藏可用来保护病人隐私。主要介绍了具有对比度增强效果的可逆信息隐藏,根据运用的载体类型将其分为基于像素直方图的方法和基于预测误差直方图的对比度增强的方法。该系列方法的主要目的是从主观上提高载密图像的质量,并同时实现可逆信息嵌入,这类方法适用于医学图像隐私保护。最后,通过分析现有工作的优势与不足,对未来的发展方向做了展望。Reversible data hiding methods can recover the cover image losslessly after extracting the secret message from the marked image. Such technology can be used in the certification or the label of military, justice and medical images, which are sensitive and slight modification are not allowed. Especially for the medical images, RDH technology can be used in protecting the privacy of the patient. A series of RDH methods with contrast enhancement effect were introduced and classified into pixel-based histogram methods and prediction-error-based histogram methods according to the type of carrier in RDH scheme. The main purpose of such algorithms was to improve the subjective visual quality of marked images and to embed secret data into cover image reversibly meanwhile. These series of algorithms were suitable for the research of privacy protection of medical image. Finally, future development in this direction is prospected through analyzing the advantages and disadvantages of the existing work.

关 键 词：可逆信息隐藏 隐私保护 对比度增强 直方图平移 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]