Abstract

In an effort to combine the advantages of optical information processing and the flexibility of digital computers, a real-time image subtraction system has been developed. This system uses a microcomputer to control a Litton magnetooptic device and as an interface to a video camera. Since the magnetooptic device is a transmitted type spatial light modulator, it can perform real-time programmable optical signal processing. Details of the system and its performance used in image subtraction are discussed. Additionally, experimental demonstrations of the subtracted images are shown. A brief discussion of the possible use of the system in applications such as robotics vision and automated inspection is also presented.

© 1985 Optical Society of America