H.W. Li, J. Gazengel, N. P. Xuan, J. Ferrier, J. Bourdin, G. Rivoire
{"title":"Optical Image Processing : Spatial Filtering by Photorefractive Materials","authors":"H.W. Li, J. Gazengel, N. P. Xuan, J. Ferrier, J. Bourdin, G. Rivoire","doi":"10.1364/pmed.1990.jp5","DOIUrl":null,"url":null,"abstract":"The nonlinearities of photorefractive materials such as Fe:LiNbO3, BSO, BGO,… are used to filter the Fourier spectrum of an object. Image processing techniques, such as contrast inversion or contrast enhancement of amplitude objects, and phase objects visualization are thus obtained with simple optical devices and low power cw lasers.","PeriodicalId":385625,"journal":{"name":"Topical Meeting on Photorefractive Materials, Effects, and Devices II","volume":"313 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topical Meeting on Photorefractive Materials, Effects, and Devices II","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/pmed.1990.jp5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The nonlinearities of photorefractive materials such as Fe:LiNbO3, BSO, BGO,… are used to filter the Fourier spectrum of an object. Image processing techniques, such as contrast inversion or contrast enhancement of amplitude objects, and phase objects visualization are thus obtained with simple optical devices and low power cw lasers.