光学全息的数字实现  

Digital implementation scheme of optical holograms

作　　者：潘武[1] 田贻丽[1] 

机构地区：[1]重庆邮电学院微光机电系统研究所,重庆400065

出　　处：《光学精密工程》2005年第z1期15-20,共6页Optics and Precision Engineering

基　　金：重庆市教委科学技术研究项目(No.020508);重庆邮电学院博士科研基金项目(No.A2002-36)

摘　　要：研究光学全息的数字模拟,探讨数字全息的数字重构方法,以菲涅耳衍射积分的实现方法为基础,采用MATLAB软件实现菲涅耳全息图的数字记录和数字重构模拟,给出模拟结果。利用离散菲涅耳衍射积分方法完成数字全息图的数字重构。利用数字图像处理方法对所得的数字全息图进行适当滤波处理,有利于消除零级像和孪生像,获得清晰的数字再现像。引入全息变换,根据全息图的不可撕毁性,研究了全息变换在数字图像压缩中的应用,对给定的二值化图像实现压缩存储及解压缩处理。Digital modeling of optical hologram has been researched.The reconstruction methods of digital hologram are discussed.The record and reconstruction of Fresnel holograms have been simulated by MATLAB software based on Fresnel diffraction integral and digital reconstructions of digital holograms are accomplished by discrete Fresnel diffraction integral.The digital holograms are processed properly by digital image processing in order to eliminate zero order and twinning images in reconstruction,and better reconstruction images digital hologram are obtained.The holographic transformation is introduced and applied in digital image compression.The compressing storage of binary images and its decompression are discussed.

关 键 词：数字全息 数字模拟 重构 图像压缩 

分 类 号：O438.1[机械工程—光学工程]