The Engineer Topographic Laboratories (ETL) Hybrid Optical/Digital Image Processor

John R. Benton; Francis Corbett; Richard Tuft

doi:10.1117/12.958517

25 April 1980 The Engineer Topographic Laboratories (ETL) Hybrid Optical/Digital Image Processor

John R. Benton, Francis Corbett, Richard Tuft

Proceedings Volume 0218, Devices and Systems for Optical Signal Processing; (1980) https://doi.org/10.1117/12.958517
Event: 1980 Los Angeles Technical Symposium, 1980, Los Angeles, United States

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.

Citation Download Citation

John R. Benton, Francis Corbett, and Richard Tuft "The Engineer Topographic Laboratories (ETL) Hybrid Optical/Digital Image Processor", Proc. SPIE 0218, Devices and Systems for Optical Signal Processing, (25 April 1980); https://doi.org/10.1117/12.958517

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