Phase filter multiplexing for pattern recognition process
Usually filters used in optical correlators are holograms, digitally or optically synthesized, that store the phase information of the object by encoding it in an amplitude media. The impulse response produced by these kinds of filters presents, beside the image of the object, the conjugate one. Thu...
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2001
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4419_n_p616_Villarreal http://hdl.handle.net/20.500.12110/paper_0277786X_v4419_n_p616_Villarreal |
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paper:paper_0277786X_v4419_n_p616_Villarreal |
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paper:paper_0277786X_v4419_n_p616_Villarreal2023-06-08T15:26:13Z Phase filter multiplexing for pattern recognition process Liquid crystal displays Optical correlators Pattern recognition Computer simulation Correlators Holograms Image analysis Liquid crystal displays Multiplexing Optical correlation Pattern recognition Television Optical correlators Optical filters Usually filters used in optical correlators are holograms, digitally or optically synthesized, that store the phase information of the object by encoding it in an amplitude media. The impulse response produced by these kinds of filters presents, beside the image of the object, the conjugate one. Thus, the number of channels available in the correlation plane is reduced. We present here a method to directly store the phase information of the objects in a liquid crystal television display working in phase-only mode. In that way the conjugate image of the object is not present in the impulse response of the filter. We introduce two different types of composed filters and compare the results obtained experimentally and by numerical simulation. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4419_n_p616_Villarreal http://hdl.handle.net/20.500.12110/paper_0277786X_v4419_n_p616_Villarreal |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Liquid crystal displays Optical correlators Pattern recognition Computer simulation Correlators Holograms Image analysis Liquid crystal displays Multiplexing Optical correlation Pattern recognition Television Optical correlators Optical filters |
| spellingShingle |
Liquid crystal displays Optical correlators Pattern recognition Computer simulation Correlators Holograms Image analysis Liquid crystal displays Multiplexing Optical correlation Pattern recognition Television Optical correlators Optical filters Phase filter multiplexing for pattern recognition process |
| topic_facet |
Liquid crystal displays Optical correlators Pattern recognition Computer simulation Correlators Holograms Image analysis Liquid crystal displays Multiplexing Optical correlation Pattern recognition Television Optical correlators Optical filters |
| description |
Usually filters used in optical correlators are holograms, digitally or optically synthesized, that store the phase information of the object by encoding it in an amplitude media. The impulse response produced by these kinds of filters presents, beside the image of the object, the conjugate one. Thus, the number of channels available in the correlation plane is reduced. We present here a method to directly store the phase information of the objects in a liquid crystal television display working in phase-only mode. In that way the conjugate image of the object is not present in the impulse response of the filter. We introduce two different types of composed filters and compare the results obtained experimentally and by numerical simulation. |
| title |
Phase filter multiplexing for pattern recognition process |
| title_short |
Phase filter multiplexing for pattern recognition process |
| title_full |
Phase filter multiplexing for pattern recognition process |
| title_fullStr |
Phase filter multiplexing for pattern recognition process |
| title_full_unstemmed |
Phase filter multiplexing for pattern recognition process |
| title_sort |
phase filter multiplexing for pattern recognition process |
| publishDate |
2001 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4419_n_p616_Villarreal http://hdl.handle.net/20.500.12110/paper_0277786X_v4419_n_p616_Villarreal |
| _version_ |
1768545092265574400 |