基于水印的图像认证技术的实现

Implementation of Image Authentication Technique Based on Watermarking

数字水印在图像认证方面有着极其重要的意义。将水印信息嵌入到图像中，认证时安全可靠，易操作，难以伪造，其社会经济价值十分巨大。本文主要研究基于水印的图像认证技术，并且实现了一种半脆弱自嵌入水印算法，用于检测原始图像的内容是否经过恶意的篡改。

Digital watermarking technique is important in the image authentication.The image embedded watermarking is secure,reliable,easy to operate,difficult to forge on authentication.Therefore,it has enormous social and economic applications.Watermarking technique for image authentication is mainly discussed in this paper.Moreover, a semi-fragile watermark algorithm is realized to detect whether the contents of the original image has malicious tampering.