现代电子技术Issue(15)：94-97,4.
基于二值约束和相位恢复算法的计算全息水印
Computer-generated holographic watermark based on binary constraint and phase retrieval algorithm
汤娟娟 1陈大庆 1龚冬梅 1顾济华1
作者信息
- 1. 苏州大学 物理科学与技术学院，江苏 苏州 215006
- 折叠
摘要
Abstract
Based on information optic theory,a method of computer generated holographic watermark is proposed to im-prove the contrast of hologram watermark and enhance robustness of watermark. The computer generated hologram(CGH)is re-produced,and then the phase is wiped off,but amplitude is reserved. The reserved amplitude is modulated with phase recon-structing method and phase information under binary restrant condition. The gray hologram is finally obtained with the phase re-trieval algorithm and the repeat iteration. The simulation results show that the proposed method has high robustness under con-ventional attacks of JPEG compression,shearing,filtering,noising,etc. This method can not only improve the anti-jamming performance of hologram and the quality of reconstructed image,reduce information loss,but also can be used in copyright pro-tection of digital products.关键词
计算全息图/相位恢复/二值约束/峰值信噪比Key words
CGH/phase retrieval/binary constraint/PSNR分类
信息技术与安全科学引用本文复制引用
汤娟娟,陈大庆,龚冬梅,顾济华..基于二值约束和相位恢复算法的计算全息水印[J].现代电子技术,2014,(15):94-97,4.
