Abstract

Spontaneous optical pattern formation from an initial seed optical pattern in an optoelectronic system with optical diffractive feedback is investigated experimentally. We demonstrate that the temporal evolution of the spontaneously formed patterns exhibits a contrast enhancement effect, a spatial filtering effect, and filling of vacant space while the surrounding structures are maintained. These effects allow us to perform image processing of natural fringe patterns, i.e., in our experiments, fingerprint patterns. We also demonstrate image processing with defect invariance for fingerprint patterns.

© 2005 Optical Society of America

Optical image processing using an optoelectronic feedback system with electronic distortion correction

Yoshio Hayasaki, Ei-ichiro Hikosaka, Hirotsugu Yamamoto, and Nobuo Nishida
Opt. Express 13(12) 4657-4665 (2005)

Spontaneous optical pattern formation in a large array of optoelectronic feedback circuits

Mikhail A. Vorontsov, Gary W. Carhart, and Rensheng Dou
J. Opt. Soc. Am. B 17(2) 266-274 (2000)

Improved fingerprint identification with supervised filtering enhancement

Abdullah Bal, Aed M. El-Saba, and Mohammad S. Alam
Appl. Opt. 44(5) 647-654 (2005)

Phase extraction from a single fringe pattern based on guidance of an extreme map

Chenggen Quan, Cho Jui Tay, Fujun Yang, and Xiaoyuan He
Appl. Opt. 44(23) 4814-4821 (2005)

Spontaneous pattern formation in a cavity with incoherent light

Tal Carmon, Hrvoje Buljan, and Mordechai Segev
Opt. Express 12(15) 3481-3487 (2004)