| 基于目标的图像轻量级加密 |
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| 引用本文： | 刘进,孙婧,徐正全,顾鑫.基于目标的图像轻量级加密[J].华中科技大学学报(自然科学版),2011(6):15-18. |
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| 作者姓名： | 刘进 孙婧 徐正全 顾鑫 |
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| 作者单位： | 武汉大学测绘遥感信息工程国家重点实验室;河海大学计算机与信息学院; |
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| 基金项目： | 国家高技术研究发展计划重点资助项目(2007AA12020204); 国家自然科学基金资助项目(40871200) |
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| 摘 要： | 基于图像编码压缩算法以及图像的选择性加密算法,分析了非压缩图像和压缩图像的目标提取方法以及恒定码率的加密算法,提出了一种基于JPEG的多目标多等级的图像轻量级加密方法,只对需要加密保护的若干重要目标区域进行加密,并开发了相应的软件平台.实验结果表明:该方法在满足一定安全性需求的前提下,进一步减少了数据计算量,而且在满足图像加密实时性要求的同时,加密图像保持了一定的视觉感知度,具有码流的兼容性和码率不变等特性.
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| 关 键 词： | 图像加密 目标选取 轻量级 恒定码流加密 多目标加密 码流兼容 |
Target-based image with low-level encryption |
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| Liu Jin, Sun Jing Xu Zhengquan Gu Xin.Target-based image with low-level encryption[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(6):15-18. |
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| Authors: | Liu Jin Sun Jing Xu Zhengquan Gu Xin |
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| Institution: | Liu Jin1,2 Sun Jing1 Xu Zhengquan1 Gu Xin1(1 State Key Lab for Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China,2 College of Computer and Information,Hohai University,Changzhou 213022,Jiangsu China) |
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| Abstract: | According to various image compression standards and selective encryption algorithms,the targets extraction methods of non-compression image and compression image as well as image encryption algorithm with constant bitrate were analyzed.Then a multi-level and multi-target image low-level encryption algorithm was proposed based on JPEG in order to achieve image content encryption in several key target area.The corresponding software based on this algorithm was developed.The experimental analysis show that th... |
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| Keywords: | low-level image encryption target extraction constant bitrate encryption multi-target image encryption codestream compliance |
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