用于图像内容认证的水印技术研究

数字水印技术在数字图像认证和版权保护中起着非常重要的作用.本文概括了数字水印技术的基本原理,分析了变换域数字水印算法的优势,提出了一种基于参数化整数小波的水印算法,详细地阐述了水印的嵌入、检测和攻击类型判定.最后在Matlab平台下对水印算法进行了仿真,仿真结果证实了算法对恶意攻击的定位准确性.

Study of Image Watermarking for Content Authentication

The technique of distal watermark plays an important role in the digi- tal image authentication and the protection of copyright.This paper sums up the fundamental of digital watermark,analyzes the advantage of the transform region al- gorithms.In this paper we propose a scheme for image authentication based on inte- ger wavelet transform with parameters,include embedding,detection and judgment of the attack style.Finally.this paper gives the experiment of the algorithm on Mat- lab.The results show that the.algorithm can locate the temper area accurately.