Abstract: With the development of Internet and digital of the multimedia information , image authentication based on digital watermarking is a hot research focus. This paper proposed the features of the fragile watermarking and the frame of the authentication system, then focuses on the algorithms and state of the fragile and semi-fragile watermarking based on authentication technology. Finally, the future development of digital watermarking for image authentication is also analyzed and conjectured in the paper.

Key words: image authentication, fragile watermarking, semi-fragile watermarking, tamper detection

摘要： 随着网络技术和媒体信息数字化的飞速发展，用于图像认证的数字水印技术成为目前研究的热点。本文主要阐述了当前用于认证的数字图像水印技术的特征、认证系统框架，详细讨论了脆弱水印和半脆弱水印的算法和研究现状，并对认证数字水印技术的未来发展方向进行了展望。

关键词: 图像认证, 脆弱水印, 半脆弱水印, 篡改检测