title: Color-image correlation with a multiwavelength Fresnel holographic filter.
abstract: Theoretical and experimental analyses of color-image pattern recognition using a multiwavelength Fresnel holographic filter (FHF) are presented. The FHF technique permits a greatly relaxed spatial-filter alignment requirement, use of a white-light source, negligible color cross talk, and high diffraction efficiency of the spatial filter.
authors.forename: G G
authors.initials: GG
authors.lastname: Mu
authors.forename: D Q
authors.initials: DQ
authors.lastname: Chen
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Wang