Abstract

A real-time polychromatic image correlator using the magnetooptic 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 with a charge-coupled device interfaced with a magnetooptic device. The color-coded binary images are then processed by a multichannel joint spectral matched spatial filter synthesized by monochromatic light.

© 1987 Optical Society of America