Abstract

Binary phase-only circular harmonic filters show an angular dependence on the rotational orientation of the input object, which can be removed by encoding a Fresnel lens onto the filter. Theoretical and experimental results are presented using these filters written onto the magnetooptic spatial light modulator.

© 1991 Optical Society of America

Improved synthetic discriminant function performance using Fresnel lens-encoded binary phase-only filters

Jeffrey A. Davis, Stuart H. Drayton, Don M. Cottrell, and Jeffrey E. Davis
Appl. Opt. 29(17) 2594-2599 (1990)

Optical binary phase-only filters for circular harmonic correlations

Luc Leclerc, Yunlong Sheng, and Henry H. Arsenault
Appl. Opt. 30(32) 4643-4649 (1991)

Rotation invariant phase-only and binary phase-only correlation

Luc Leclerc, Yunlong Sheng, and Henri H. Arsenault
Appl. Opt. 28(6) 1251-1256 (1989)

Phase-encoded binary filters for optical pattern recognition

Jeffrey A. Davis, Don M. Cottrell, Glenn W. Bach, and Roger A. Lilly
Appl. Opt. 28(2) 258-261 (1989)

Fresnel lens-encoded binary phase-only filters for optical pattern recognition

Jeffrey A. Davis, Don M. Cottrell, Jeffrey E. Davis, and Roger A. Lilly
Opt. Lett. 14(13) 659-661 (1989)