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基于多通道体全息相关器的二维离散沃尔什变换

Two Dimensional Discrete Walsh Transform Based on Multi-Channel Volume Holographic Correlator

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摘要

利用体全息相关器(VHC)可以完成多通道内积运算的特性,通过将待变换函数和二维沃尔什(Walsh)函数分别编码成输入图像和存储图像,提出了一种基于多通道体全息相关器的二维离散Walsh变换(DWT)方法。此方法可以快速、并行对输入函数做二维离散Walsh变换,并具有很大的速度提升潜力。利用散斑调制和随机交错方法可以提高运算精度。经验证,实验结果与理论值吻合。

Abstract

The volume holographic correlator (VHC) can perform multi-channel inner products calculation. By encoding the input function and two-dimensional Walsh functions into input image and stored images respectively,a method that using volume holographic correlator to perform two-dimensional discrete Walsh transform (DWT) is proposed. This method has a potential to approach a high processing speed. By use of speckle modulation and interleaving method,the calculation accuracy can be improved. An experiment is carried out,and the correspondency between experimental results and theoretical ones proves the effectiveness of the method.

Newport宣传-MKS新实验室计划
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中图分类号:O438.1

DOI:10.3788/cjl20093611.2997

所属栏目:全息与信息处理

基金项目:国家973计划(G1999033001,2009CB724007)和国家自然科学基金(60677037,60807005)资助课题。

收稿日期:2008-12-26

修改稿日期:2009-02-27

网络出版日期:0001-01-01

作者单位    点击查看

马强:清华大学 精密测试技术与仪器国家重点实验室,北京 100084
曹良才:清华大学 精密测试技术与仪器国家重点实验室,北京 100084
谭峭峰:清华大学 精密测试技术与仪器国家重点实验室,北京 100084
何庆声:清华大学 精密测试技术与仪器国家重点实验室,北京 100084
金国藩:清华大学 精密测试技术与仪器国家重点实验室,北京 100084

联系人作者:马强(maqiang00@mails.tsinghua.edu.cn)

备注:马强|主要从事光信息处理方面的研究|(1982-),男,博士研究生。

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引用该论文

Ma Qiang,Cao Liangcai,Tan Qiaofeng,He Qingsheng,Jin Guofan. Two Dimensional Discrete Walsh Transform Based on Multi-Channel Volume Holographic Correlator[J]. Chinese Journal of Lasers, 2009, 36(11): 2997-3001

马强,曹良才,谭峭峰,何庆声,金国藩. 基于多通道体全息相关器的二维离散沃尔什变换[J]. 中国激光, 2009, 36(11): 2997-3001

被引情况

【1】易瑶,曹良才,郑天祥,赵瑱,何庆声,金国藩. 高速高精度体全息光学相关器. 中国激光, 2014, 41(2): 209005--1

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