Color object identification by monochromatic binary correlation

A real-time polychromatic image correlator that uses a magnetooptic (MO) spatial light modulator (SLM) device for pattern recognition based on both the color and shape of an input object is presented. The proposed system utilizes a multichannel spectral matched spatial filter employed in a binary co...

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Bibliographic Details
Published in:Applied optics (2004) 1988-03, Vol.27 (5), p.949-953
Main Authors: Javidi, B, Kuo, C J, Chen, Y F, Ludman, J E
Format: Article
Language:English
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Summary:A real-time polychromatic image correlator that uses a magnetooptic (MO) spatial light modulator (SLM) device for pattern recognition based on both the color and shape of an input object is presented. The proposed system utilizes a multichannel spectral matched spatial filter employed in a binary coherent optical correlator. Input color images are transformed into binary color coded coherent images by a color grating. The color encoded images are read out by a charge coupled device interfaced with a MO SLM. The color encoded binary images are then processed by a multichannel joint spectral matched spatial filter synthesized by monochromatic light. Pattern recognition experiments for naturally illuminated real color objects are presented.
ISSN:1559-128X
DOI:10.1364/AO.27.000949