摘要
介绍一种利用光栅编码实现实时光学图像相减的新方法。仅使用一块一维透反光栅就可完成对待相减的两幅图像进行编码,再通过傅里叶滤波进行解码,即可实时完成光学图像的复振幅相减。文中给出了原理分析及其实验结果,最后作了简要的讨论。
This paper introduces a new method of real-time optical image subtraction realizedby grating encoding.In this method, two images are encoded by a one dimensional transmission-reflection grating,while decoding is completed by Fourier filtering.Thus,amplitude subtraction of the two images will be real-time resulted in the output plane of the optical system. The principle analysis for the method and experimental result are given.Finally,a brief discussion is made.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1994年第12期991-994,共4页
Chinese Journal of Lasers
基金
国家自然科学基金
关键词
实时
光学图像相减
编码
光栅编码
real-time optical image subtraction,encoding and decoding, spatial filtering,transmission-reflection grating