Feature extraction using a multichannel correlator

Javier Mazzaferri; Silvia A. Ledesma; Claudio C. Iemmi

doi:10.1117/12.524850

19 November 2003 Feature extraction using a multichannel correlator

Javier Mazzaferri, Silvia A. Ledesma, Claudio C. Iemmi

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.524850
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

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.

Citation Download Citation

Javier Mazzaferri, Silvia A. Ledesma, and Claudio C. Iemmi "Feature extraction using a multichannel correlator", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.524850

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