计算机与现代化Issue(8)：77-79,83,4.DOI:10.3969/j.issn.1006-2475.2012.08.021
基于DCT域的两种盲水印算法的应用与比较
Application and Comparison of Two Blind Watermarking Algorithms Based on DCT Domain
张帅 1曹晓钧2
作者信息
- 1. 太原广播电视大学教学处,山西太原030002
- 2. 太原理工大学信息工程学院,山西太原030024
- 折叠
摘要
Abstract
Based on Arnold scrambling theory and chaos sequence encryption method to encrypt watermark image preprocessing, at the watermark embedding, two digital watermark algorithms are proposed based on DCT transform domain. The algorithm a-chieves the embedding of watermark by means of modifying the coefficients and the replacement of intermediate frequency coeffi-cient. By comparison and analysis of two algorithms simulation experiment results, and draw the conclusion that both of the algo-rithms have good invisibility, do not require the participation of the original image, which is fully blind extraction; But the water-marking algorithm with the replacement of intermediate frequency coefficient in resisting some common image attacks such as JPEG compression, noise and filtering show a stronger robustness.关键词
数字水印/离散余弦变换(DCT)/Arnold置乱/鲁棒性/峰值信噪比/归一化Key words
digital watermark/ DCT/ Arnold scrambling/ robustness/ PSNR/ NC分类
信息技术与安全科学引用本文复制引用
张帅,曹晓钧..基于DCT域的两种盲水印算法的应用与比较[J].计算机与现代化,2012,(8):77-79,83,4.
