Compact photorefractive correlator for robotic applications
1992; Optica Publishing Group; Volume: 31; Issue: 26 Linguagem: Inglês
10.1364/ao.31.005666
ISSN0003-6935
AutoresH. Rajbenbach, Sambath Bann, Philippe Réfrégier, Pascal Joffre, Jean‐Pierre Huignard, Hermann-Stephan Buchkremer, Arne Skov Jensen, Erling Rasmussen, Karl‐Heinz Brenner, Garry Lohman,
Tópico(s)Advanced Optical Imaging Technologies
ResumoWe 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.
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