摘要
不可见性和稳健性是数字水印最基本的要求,而影响水印这两个基本特性的因素主要是嵌入策略、嵌入公式和嵌入强度。提出一种改进的利用人眼视觉特性的基于离散小波变换(DWT)的数字水印算法。实验结果表明,应用本算法实现的水印嵌入强度可调,在满足不可见性的条件下,对常见的图像处理和噪声干扰具有很好的稳健性。
Invisibleness and robustness are two of the most basic requirements for digital watermarks. Embedding strategy, embedding formula and watermark strength all affect robustness of invisible watermarks. A novel digital watermarking scheme using wavelet transform based on human visual system is presented in this paper. The experimental results show that the watermarks generated with the proposed scheme are invisible and are pretty robust against noise and commonly used image proceeding techniques.
出处
《南昌大学学报(理科版)》
CAS
北大核心
2005年第4期400-403,408,共5页
Journal of Nanchang University(Natural Science)
关键词
数字水印
人眼视觉特性
小波变换
digital watermarking
human visual system
wavelet transform
作者简介
王志明(1968-),男,硕士生。