Watermarking based on discrete fractional random transform

被引：48
|
作者：
Guo, Jun [1 ]
Liu, Zhengjun [1 ]
Liu, Shutian [1 ]
机构：
[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2007年 / 272卷 / 02期
基金：
中国国家自然科学基金;
关键词：
watermarking; discrete fractional random transform; phase shift keying; random block selection; high amplitude selection;
D O I：
10.1016/j.optcom.2006.11.034
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a novel watermarking algorithm based on discrete fractional random transform. Random block selection and high amplitude selection techniques have been employed to improve the robustness of the watermarking algorithm. The imperceptibility of the watermarking is improved by adjusting the intensity of phase shift keying. Simulations under several conditions are given to verify the effectiveness of the proposed scheme. The results have shown the proposed algorithm is robust against the attacks of cropping, noising and low-pass filtering. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：344 / 348
页数：5
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