计算机工程与应用2017，Vol.53Issue(7)：115-120,6.DOI:10.3778/j.issn.1002-8331.1510-0128
基于超混沌的医学图像篡改定位零水印算法
Zero watermarking scheme for medical image temper location based on hyper-chaos encryption
摘要
Abstract
Medical image facing malicious tampering, information thefting and leaking, this paper proposes a hyper-chaos based zero watermarking scheme for image authentication and tamper detection. Firstly, original carrier image's LSB plane should be initialized to zero. Secondly it is divided into non-overlapping blocks and calculating the mean value of each block, using the size relationship between each pixel of block and mean value of each block to construct the charac-teristic matrix. Finally, Arnold scrambled characteristics matrix and hyper-chaotic encrypted binary watermark are executed for XOR operation to construct a zero-watermark. In addition, if the image has been tampered, tampered area can be detected and localized accuracy by calculating the difference image. The experimental results show that the scheme not only has good security, but also achieves superior tamper detection and localization.关键词
超混沌/篡改检测/零水印/医学图像Key words
hyper-chaos encryption/tamper detection/zero watermarking/medical image分类
信息技术与安全科学引用本文复制引用
肖振久,李南,王永滨,姜正涛,陈虹..基于超混沌的医学图像篡改定位零水印算法[J].计算机工程与应用,2017,53(7):115-120,6.基金项目
国家自然科学基金(No.61103199) （No.61103199）
教育部-中移动科研基金(No.MCM20130411). （No.MCM20130411）
