Real-time Objects Recognition by Photoanisotropic Copies

The method of object recognition based on obtaining  a photo-anisotropic copies of object images on polarization-sensitive material is developed

Abstract: 

The method of object recognition is described by the example of objects of amplitude transparent type. The method is to obtain a photoanisotropic copy of object images on polarization-sensitive material. At consequent illumination of the photoanisotropic copy with a parallel circularly polarized beam of nonactinic light, the transmitted light becomes elliptically polarized. It is shown that the characteristics of the summary polarization ellipse in the Fraunhofer diffraction region uniquely identify the given object. The real-time determination of the characteristics of the summary polarization ellipse is made by means of diffraction gratings of anisotropic profile and by comparison of these characteristics with etalon from the database.

This publication has been peer reviewed.
Publication Type: 
Journal Article
Authors: 
Barbara Kilosanidze, Georgia Kakauridze, Lia Margolin, Irine Kobulashvili
Year of Publication: 
2007
Journal, Book, Magazine or Other Publication Title: 
Journal of Applied Optics
Volume: 
46
Issue: 
30
Pages: 
7537-7543
Publisher: 
Journal of Applied Optics
Date Published: 
Thursday, October 18, 2007
Place Published: 
USA
Publication Language: 
English
Boyer's Domain: 
Associated Awards: 
CRDF Grant