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.
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。
A hierarchical semi-fragile digital watermarking algorithm was designed for image content integrality authentication, tamper localization and recovery.
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。
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.
仿真实验表明，该算法对任意大小的亮度图像、RGB图像具有高精度的篡改定位能力，并且具有很好的篡改恢复性能。
The simulation results show that the proposed algorithm has precise tamper localization to any size of brightness images and RGB images, and has good tamper recovery performance.
仿真实验表明，该算法对任意大小的亮度图像、RGB图像具有高精度的篡改定位能力，并且具有很好的篡改恢复性能。
The simulation results show that the proposed algorithm has precise tamper localization to any size of brightness images and RGB images, and has good tamper recovery performance.
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