Abstract:
We propose here a method to optically perform multiple feature extraction using wavelet transforms. The method is based on obtaining the optical correlation by means of a Vander Lugt architecture, where the scene and the filter are displayed on spatial light modulators (SLM). Multiple phase filters containing the information about the features that we are interested on extracting are designed and then displayed on a SLM working in mostly phase mode. We have designed filters where edges and corners or different characteristic frequencies contained on the input scene are detected. Simulated and experimental results are shown.
Registro:
| Documento: |
Conferencia
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| Título: | Feature extraction using a multichannel correlator |
| Autor: | Mazzaferri, J.; Ledesma, S.; Iemmi, C. |
| Ciudad: | Firenze |
| Filiación: | Lab. de Procesado de Imageries, Departamento de Física, Universidad de Buenos Aires, Argentina
Dto. de Física, F. C. E. Y N., Pabellón I - Cd. Univ., C 1428 EHA- Ciudad de Buenos Aires, Argentina
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| Palabras clave: | Joint transform correlator (JTC); Multichannel correlators; Multiple phase filters; Wavelets; Charge coupled devices; Fourier transforms; Fractals; Frequencies; Light modulation; Light polarization; Liquid crystals; Numerical analysis; Optical filters; Optical projectors; Pattern recognition; Photodiodes; Photorefractive materials; Real time systems; Wavelet transforms; Optical correlation |
| Año: | 2003
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| Volumen: | 4829 I
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| Página de inicio: | 460
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| Página de fin: | 461
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| DOI: |
http://dx.doi.org/10.1117/12.524850 |
| Título revista: | 19th Congress of the International Commisssion for Optics Optics for the Quality of Life
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| Título revista abreviado: | Proc SPIE Int Soc Opt Eng
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| ISSN: | 0277786X
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| CODEN: | PSISD
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4829I_n_p460_Mazzaferri |
Referencias:
- Mendlovic, D., Ouzieli, I., Kiryuschev, I., Marom, E., Two-dimensional wavelet transform achieved by computer-generated multireference matched filter and Dammann grating (1995) App. Opt., 34 (35), pp. 8213-8219
- Kozaitis, S.P., Getbehead, M.A., Optical wavelet feature extraction using a multiple input phase - Only encoded joint-transform correlator (1998) Opt. Comm., 151, pp. 15-20
- Feng, W., Yan, Y., Jin, G., Wu, M., He, Q., Multiplexing of volume holographic wavelet correlation processor (2000) Opt. Comm., 176, pp. 49-59
- Zhang, H., Cartwright, C.M., Ding, M.-S., Gillespie, W.A., Image feature extraction with various wavelet functions in a photorefractive joint transform correlator (2000) Opt. Comm., 185 (4-6), p. 277
- Moreno, I., Ahouzi, E., Campos, J., Yzuel, M.J., Real - Time binary - Amplitude phase - Only filters (1997) App. Opt., 36 (29), pp. 7428-7432
- Villarreal, M., Iemmi, C., Campos, J., Phase filter multiplexing for pattern recognition process (2001) Proc. SPD5, 4419, pp. 616-619
- Marquez, A., Iemmi, C., Moreno, I., Davis, J., Campos, J., Yzuel, M., Quantitative predictions of the modulation behavior of twisted nematic liquid crystal displays based on a simple physical model Opt. Eng., , in pressA4 - ICO-International Commission for Optics; CNR-COnsiglio Nazionale delle Ricerche (Italy); INOA-Instituto Nazional de Ottica Applicata (Italy); SPIE; Universita degli Studi di Firenze (ITALY)
Citas:
---------- APA ----------
Mazzaferri, J., Ledesma, S. & Iemmi, C.
(2003)
. Feature extraction using a multichannel correlator. 19th Congress of the International Commisssion for Optics Optics for the Quality of Life, 4829 I, 460-461.
http://dx.doi.org/10.1117/12.524850---------- CHICAGO ----------
Mazzaferri, J., Ledesma, S., Iemmi, C.
"Feature extraction using a multichannel correlator"
. 19th Congress of the International Commisssion for Optics Optics for the Quality of Life 4829 I
(2003) : 460-461.
http://dx.doi.org/10.1117/12.524850---------- MLA ----------
Mazzaferri, J., Ledesma, S., Iemmi, C.
"Feature extraction using a multichannel correlator"
. 19th Congress of the International Commisssion for Optics Optics for the Quality of Life, vol. 4829 I, 2003, pp. 460-461.
http://dx.doi.org/10.1117/12.524850---------- VANCOUVER ----------
Mazzaferri, J., Ledesma, S., Iemmi, C. Feature extraction using a multichannel correlator. Proc SPIE Int Soc Opt Eng. 2003;4829 I:460-461.
http://dx.doi.org/10.1117/12.524850
