DCT数字水印算法与DWT数字水印算法的性能比较  

Comparison of Digital Watermarking Algorithm Features Between DCT and DWT

作　　者：程兴国[1] 张建华[1] 

机构地区：[1]襄樊学院物理与电子信息技术,湖北襄樊441053

出　　处：《襄樊学院学报》2007年第2期41-45,共5页Journal of Xiangfan University

摘　　要：文章阐述了DCT数字水印算法与DWT数字水印算法的基本概念、基本原理及具体算法实现。通过二个最基本的性能评估指标:误码率和峰值信噪比,来定量比较二种水印算法在含水印图像受到各种处理时显现的鲁棒性。实验结果表明:DWT数字水印算法的性能要更优于DCT数字水印算法.This paper explained some basic concepts,basic principles and applied methods about DCT digital watermarking algorithm and DWT digital watermarking algorithm.The robust of two methods are quantificationally watermarking algorithm is more robust to common image processing and JPEG compression than that of DCT.

关 键 词：离散余弦变换 离散小波变换 数字水印 压缩 剪切 

分 类 号：TN918[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]