计算机技术与发展2011，Vol.21Issue(2)：189-192,197,5.
基于混沌和傅里叶变换的数字水印算法
Digital Watermarking Algorithm Based on Chaos and Fourier Transform
赵梅 1姜梅 1甘信丹1
作者信息
- 1. 青岛理工大学计算机工程学院,山东,青岛,266033
- 折叠
摘要
Abstract
A digital watermarking algorithm is proposed based on chaotic map and fractional Fourier transform. Design a binary image as a watermark , and encrypt it by a chaotic map under the control of the secret key. The original digital image is fractional Fourier transformed with the chaotic sequences generated by the key, and the watermark is embedded in the phase spectrum coefficient. Finally the watermarked image can be obtained by inversely fractional Fourier transformation. The experimental results show that the algorithm is simple, invisible, and robust against crop, compression, added noise and rotation.关键词
数字水印/分数傅里叶变换/混沌/鲁棒性分类
信息技术与安全科学引用本文复制引用
赵梅,姜梅,甘信丹..基于混沌和傅里叶变换的数字水印算法[J].计算机技术与发展,2011,21(2):189-192,197,5.
