Conferencia
Villarreal, M.; Iemmi, C.; Campos, J.; Kaufmann G.H. "Phase filter multiplexing for pattern recognition process" (2001) 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications. 4419:616-619
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Abstract:
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.
Registro:
| Documento: | Conferencia |
| Título: | Phase filter multiplexing for pattern recognition process |
| Autor: | Villarreal, M.; Iemmi, C.; Campos, J.; Kaufmann G.H. |
| Ciudad: | Tandil |
| Filiación: | Laboratorio de Procesado de Imagenes, F.C.E y N., Universidad de Buenos Aires, 1428 Buenos Aires, Argentina |
| Palabras clave: | 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 |
| Año: | 2001 |
| Volumen: | 4419 |
| Página de inicio: | 616 |
| Página de fin: | 619 |
| DOI: | http://dx.doi.org/10.1117/12.437067 |
| Título revista: | 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications |
| Título revista abreviado: | Proc SPIE Int Soc Opt Eng |
| ISSN: | 0277786X |
| CODEN: | PSISD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4419_n_p616_Villarreal |
Referencias:
- Brown, B.R., Lohmann, A.W., Complex spatial filtering with binary masks (1966) Appl. Opt., 5, pp. 967-969
- Lee, W.H., Binary synthetic holograms (1974) Appl. Opt., 13, pp. 1677-1682
- Iemmi, C., Ledesma, S., Campos, J., Villarreal, M., Gray-level computer-generated hologram filters for multiple-object correlation (2000) Appl. Opt., 39, pp. 1233-1240
- Horner, J.L., Gianino, P.D., Phase-only matched filtering (1984) Appl. Opt., 23, pp. 812-816
- Márquez, A., Iemmi, C., Moreno, I., Davis, J., Campos, J., Yzuel, M.J., Quantitative predictions of the modulation behavior of twisted nematic liquid crystal displays based on a simple physical model Opt. Eng., , in press
- Bernhardt, M., Wyrowski, F., Bryngdahl, O., Iterative techniques to integrate different optical functions in a difractive phase element (1991) Appl. Opt., 30, pp. 4629-4635A4 - SPIE; Laseroptics SA (Argentina); Optical Society of America; International Commission for Optics; Spectra-Physics GmbH (Germany)
Citas:
---------- APA ----------
Villarreal, M., Iemmi, C., Campos, J. & Kaufmann G.H. (2001) . Phase filter multiplexing for pattern recognition process. 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, 4419, 616-619.http://dx.doi.org/10.1117/12.437067
---------- CHICAGO ----------
Villarreal, M., Iemmi, C., Campos, J., Kaufmann G.H. "Phase filter multiplexing for pattern recognition process" . 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications 4419 (2001) : 616-619.http://dx.doi.org/10.1117/12.437067
---------- MLA ----------
Villarreal, M., Iemmi, C., Campos, J., Kaufmann G.H. "Phase filter multiplexing for pattern recognition process" . 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, vol. 4419, 2001, pp. 616-619.http://dx.doi.org/10.1117/12.437067
---------- VANCOUVER ----------
Villarreal, M., Iemmi, C., Campos, J., Kaufmann G.H. Phase filter multiplexing for pattern recognition process. Proc SPIE Int Soc Opt Eng. 2001;4419:616-619.http://dx.doi.org/10.1117/12.437067
