一种改进的基于循环块相关的脆弱水印认证算法 关键词：脆弱水印；循环块相关；混沌系统；篡改定位 [gap=1011]Key words：fragile watermarking；circular—block dependence；chaos system；tamper localization
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The main idea is to separate the tamper detection and tamper localization.
其主要思想把篡改检测和篡改定位相分离。
参考来源 - 数字图像认证算法的安全性分析Experimental results demonstrate that this algorithm achieves good semi-fragility,detection reliability and tampering localization property.
实验结果表明该算法实现了良好的半脆弱性、检测可靠性和篡改定位特性。
参考来源 - 数字音频水印中的关键技术研究Experimental results demonstrate that with the selected speech coding, compared to existing algorithm, the proposed algorithm has better ability to distinguish content preserving operations from content tamper, and it can implement the tamper localization more accurately.
仿真实验结果表明,针对选定的语音编码标准,在内容保持操作和语音内容篡改方面,本文中的算法比已有的算法拥有更好的区分度;在篡改定位方面,本文中的算法有更精确的定位能力。
参考来源 - 参数域语音内容认证算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
其主要思想把篡改检测和篡改定位相分离。
The main idea is to separate the tamper detection and tamper localization.
该算法可以检测任何修改，且能把篡改定位精确到一个像素。
The algorithm can detect any manipulations and can localize the modifications to a single-pixel level.
理论分析和实验数据表明，该方案在保证系统安全性的同时，有效地提高了篡改定位的精度。
Theory analysis and experimental results demonstrate that the proposed scheme improves the accuracy of tamper localization as well as ensure the security.
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