摘要: 脆弱性数字水印能为多媒体内容完整性认证和篡改检测提供有效的解决方案。该文对用于图像认证的脆弱性数字水印技术的研究现状、一般原理、基本特征、典型算法进行了综述,并对4种典型算法进行了实验研究,分析比较它们在经过剪切、缩放、JPEG压缩、局部修改等处理时的脆弱性,给出脆弱性数字水印技术的发展方向。
关键词:
数字水印,
脆弱性,
半脆弱性,
内容认证,
篡改定位
Abstract: Fragile digital watermark techniques provide effective solutions for multimedia content authentication and tamper-detection. This paper gives an overview of fragile digital watermark for image authentication, including the background, the basic characteristics and current algorithms. The performance of four fragile watermark algorithms in terms of their probabilities under signal processing operations is compared, such as cutting, scaling, JPEG compression and malicious alteration. The future orientations of research are prospected in the end.
Key words:
digital watermark,
fragile,
semi-fragile,
content authentication,
tamper localization
中图分类号:
张 弘;王 颖. 脆弱性数字图像水印算法比较研究[J]. 计算机工程, 2008, 34(3): 174-177.
ZHANG Hong; WANG Ying. Comparative Evaluation of Digital Fragile Image Watermark Algorithms[J]. Computer Engineering, 2008, 34(3): 174-177.