title: Compact photorefractive correlator for robotic applications.
abstract: We design, implement, and test a multichannel photorefractive optical joint transform correlator that is capable of performing sorting tasks for robotic applications. The use of mini-YAG lasers and liquid-crystal spatial light modulators, in conjunction with updatable holographic BSO crystals, results in a compact correlator (600 mm x 300 mm x 300 mm) with real-time capabilities (100-ms recognition speed). Flexibility is a built-in feature, and correlation is demonstrated for various applications. Electronic and optical preprocessing and postprocessing for improving demonstrator performances are also discussed.
authors: H
authors: H
authors: Rajbenbach
authors: S
authors: S
authors: Bann
authors: P
authors: P
authors: Réfrégier
authors: P
authors: P
authors: Joffre
authors: J P
authors: JP
authors: Huignard
authors: H S
authors: HS
authors: Buchkremer
authors: A S
authors: AS
authors: Jensen
authors: E
authors: E
authors: Rasmussen
authors: K H
authors: KH
authors: Brenner
authors: G
authors: G
authors: Lohman