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基于曲面插值的加密图像可逆信息隐藏算法 预览

Reversible Information Hiding Method in Encrypted Image Based on Surface Interpolation
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摘要 提出一种基于曲面插值的加密图像可逆信息隐藏算法.对原始图像进行加密,利用随机函数确定加密图像中的载体像素,根据载体像素取反位的不同采取不同的隐藏方法.对载密图像进行解密以确定载体像素,在载体像素5×5邻域中选取与载体像素距离最近的6个非载体像素,采用曲面插值的方法计算载体像素的预测值,应用该预测值提取秘密信息并恢复载体像素.实验结果表明,该算法提取秘密信息的错误率较低,恢复图像的视觉效果较好. This paper proposes a reversible information hiding method for encrypted im- ages by means of surface interpolation. An original image is encrypted firstly, then a ran- dom function is used for obtaining the cover pixels in the encrypted image. Different hiding methods are adopted in accordance with the different inverted bits in the cover pixels. The stego-image is decrypted and the cover pixels are obtained. In the 5 ~ 5 neighborhood of a cover pixel, six non-cover pixels which axe closet to the cover pixel are selected. Then surface interpolation is applied to calculate the predicted value of the cover pixel. The predicted value is used for extracting secret data and recovering the original pixel. The experimental results indicate that this method performs with a lower error rate in secret data extraction and a higher visual quality in image recovery.
作者 陈艳 俞春强 侯晓杰 张显全 唐振军 何南 CHEN Yan1, YU Chun-qiang1,3, HOU Xiao-jie1,3, ZHANG Xian-quan1,2,3, TANG Zhen-jun2, HE Nana * 1. Network Information Center, Guangxi Normal University, Guilin 541004, Guangxi Province, China Guangxi Key Lab of Multi-source Information Mining of Security, Guangxi Normal University, Guilin 541004, Guangxi Province, China 3 Guangxi Colleges and Universities Key Laboratory of Cloud and Complex Systems, Guilin University of Electronic Technology, Guilin 541004, Guangxi Province, China 4. Network and Educational Technology Center, Guilin Normal College, Guilin 541004, Guangxi Province, China
出处 《应用科学学报》 CSCD 北大核心 2018年第2期220-236,共17页 Journal of Applied Sciences
基金 国家自然科学基金(No.61762017,No.61363034,No.61562007,N0.81701780):广西自然科学基金(No.2015GXNSFDA139040,No.2017GXNSFBA198221,No.2017GXNsFAA198222) 教育部“春晖计划”合作科研项目基金(No.Z2015149) 广西信息科学实验中心项目基金(No.2013020.4):广西教育厅高校科研项目基金(No.LX2014056,No.LX2014115,No.KY2015LX006) 广西区域多源信息集成与智能处理协同创新中心项目基金 广西高校云计算与复杂系统重点实验室项目基金(No.15202):广西师范大学校级项目青年课题基金:基于预测技术的可逆信息隐藏研究 广西师范大学校级项目青年课题基金(No.2016QN007)资助
关键词 可逆信息隐藏 图像加密 曲面插值 预测值 reversible information hiding, image encryption, surface interpolation, prediction value
作者简介 通信作者:张显全,教授,研究方向:图像处理,E-mail:zxq6622@163.com
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