Abstract

The Horner efficiency for the phase-only filter and binary phase-only filter used for optical pattern recognition is discussed relative to both the filter formulation algorithm and the geometry of the object. Using computer simulations, we find that up to 80% of the incident energy can result in the peak of the correlation signal under proper conditions with the phase-only filter. Experimental results are obtained by using the binary phase-only filter written onto magneto-optic spatial light modulator.

© 1993 Optical Society of America

Design elements of binary phase-only correlation filters

David L. Flannery, John S. Loomis, and Mary E. Milkovich
Appl. Opt. 27(20) 4231-4235 (1988)

Optical binary phase-only filters for circular harmonic correlations

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

Bandwidth considerations for binary phase-only filters

Fred M. Dickey, K. Terry Stalker, and J. Jeff Mason
Appl. Opt. 27(18) 3811-3818 (1988)

Real-time binary-amplitude phase-only filters

Ignacio Moreno, Esmail Ahouzi, Juan Campos, and María J. Yzuel
Appl. Opt. 36(29) 7428-7432 (1997)

Rotationally invariant Fresnel lens-encoded circular harmonic binary phase-only filters

Jeffrey A. Davis, Linnea R. York, and Don M. Cottrell
Appl. Opt. 30(14) 1820-1825 (1991)