Random phase masks for image recognition in optical correlators

Volodymyr M. Fitio; Leonid I. Muravsky; Arkadiy I. Stefansky

doi:10.1117/12.226700

10 November 1995 Random phase masks for image recognition in optical correlators

Volodymyr M. Fitio, Leonid I. Muravsky, Arkadiy I. Stefansky

Proceedings Volume 2647, International Conference on Holography and Correlation Optics; (1995) https://doi.org/10.1117/12.226700
Event: International Conference on Holography and Correlation Optics, 1995, Chernivsti, Ukraine

Abstract

The analysis of the random binary phase mask's (RBPM) power spectrum and correlation functions was carried out. The equations for correlation functions and correlation peaks of the RBPM at the output plane of the coherent optical correlator are obtained. Narrowing of the RBPM's correlation peaks to the sizes of the RBMS pixels is studied. The level of background noise surrounding the correlation peak is estimated and the signal-to-noise ratio is defined. The decoding (recognition) probability of the arbitrary RBPM or the phase-encoded image in the coherent optical correlator is evaluated. The joint transform correlator (JTC) with a liquid crystal spatial light modulator placed in the spectral plane of the JTC was created for experimental proving of obtained results. The sufficient increase of the phase-encoded images correlation peaks in this JTC was observed and explained. Supposition about phase encoding of images in retina of a biological vision system for explanation of high recognition ability of vital organisms is proposed.

Citation Download Citation

Volodymyr M. Fitio, Leonid I. Muravsky, and Arkadiy I. Stefansky "Random phase masks for image recognition in optical correlators", Proc. SPIE 2647, International Conference on Holography and Correlation Optics, (10 November 1995); https://doi.org/10.1117/12.226700

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