一种三维物体相息图的迭代计算方法

裴闯; 蒋晓瑜; 王加; 张鹏炜

doi:doi:10.3788/gzxb20134203.0348

光子学报, 2013, 42 (3): 348, 网络出版: 2013-03-05

一种三维物体相息图的迭代计算方法

An Iterative Algorithm for Kinoform Computation of 3D Object

论文大纲

裴闯 ^*蒋晓瑜王加张鹏炜

作者单位

装甲兵工程学院控制工程系, 北京 100072

数字全息层析技术相息图三维图像 Digital hologram Tomographic technique Kinoform Three-dimensional image

摘要

在传统迭代傅里叶变换算法的基础上, 提出了一种计算三维物体相息图的新方法.基于层析法将三维物体的多个分层物面作为衍射再现图像, 在一个输入面(相息图)和多个输出面(再现像)之间进行迭代.通过在傅里叶迭代运算中引入距离相位因子, 表示物体不同物面的深度, 体现了物体的三维特征.实验结果证明了本文算法良好的收敛特性和再现性能.最后, 分析了物面数量和间距对全息再现质量的影响, 利用液晶空间光调制器采用时分复用的方法还原了三维物体的多个物面.

Abstract

A novel method for computing kinoform of 3D object based on traditional iterative Fourier transform algorithm is described. The method divides three-dimensional object into many object planes by tomographic technique and treat every object plane as a target image, then iterative computation is carried out between one input plane(kinoform) and several output planes(reconstruction images). A space phase factor is added into iterative process to represent depth characters of 3D object. The experimental result shows that this algorithm computational and convergent velocity is fast. At last, the influences of object planes number and distance to reconstruction quality of kinoform are analyzed, and time-division multiplexing technique is used to reconstruct several object planes based on spatial light modulator.

参考文献

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裴闯, 蒋晓瑜, 王加, 张鹏炜. 一种三维物体相息图的迭代计算方法[J]. 光子学报, 2013, 42(3): 348. PEI Chuang, JIANG Xiao-yu, WANG Jia, ZHANG Peng-wei. An Iterative Algorithm for Kinoform Computation of 3D Object[J]. ACTA PHOTONICA SINICA, 2013, 42(3): 348.

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