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Proceedings Paper

The Engineer Topographic Laboratories (ETL) Hybrid Optical/Digital Image Processor
Author(s): John R. Benton; Francis Corbett; Richard Tuft
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Paper Abstract

An optical-digital processor for generalized image enhancement and filtering has been designed and is now under construction. The optical subsystem is a two PROM Fourier filter processor. Input imagery is isolated, scaled, and imaged onto the first PROM. This input plane acts like a liquid gate and serves as an incoherent to coherent converter. The image is transformed onto a second PROM which also serves as a filter medium. Filters are written onto the second PROM with a laser scan-ner in real time. A solid state CCTV camera records the filtered image which is then digitized and stored in a digital image processor. The operator can then manipulate the filtered image using the gray scale and color remapping capabilities of the video processor as well as the digital processing capabilities of the mini-computer. The operator can then try new optical filters and iteratively develop optimum methods of detecting patterns. The goal of this research is to develop automated feature extraction algorithms which will minimize the need for human intervention. This system is currently being assembled at ETL, Fort Belvoir, VA.

Paper Details

Date Published: 25 April 1980
PDF: 12 pages
Proc. SPIE 0218, Devices and Systems for Optical Signal Processing, (25 April 1980); doi: 10.1117/12.958517
Show Author Affiliations
John R. Benton, U.S. Army Engineer Topographic Laboratories (ETL) (United States)
Francis Corbett, Itek Corporation (United States)
Richard Tuft, Itek Corporation (United States)

Published in SPIE Proceedings Vol. 0218:
Devices and Systems for Optical Signal Processing
Timothy C. Strand; Armand R. Tanguay Jr., Editor(s)

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