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·2,447,543篇论文数据，部分数据来源于NoteExpress
A hierarchical semi-fragile digital watermarking algorithm was designed for image content integrality authentication, tamper localization and recovery.
设计并实现了一种基于分层的半脆弱数字水印算法，用于图像内容完整性认证，篡改定位和恢复。
Theory analysis and experimental results demonstrate that the proposed scheme improves the accuracy of tamper localization as well as ensure the security.
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。
The experimental results show that the proposed algorithm is able to authenticate the video contents and detect the tamper localization, and it is robust for MPEG-4 compression.
实验结果表明，算法能够对视频内容进行验证并实现篡改定位，且对MPEG-4压缩具有鲁棒性。
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