Accession Number : ADA188871

Title :   A Three Dimensional Electronic Retina Architecture.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Salada, Gray L

PDF Url : ADA188871

Report Date : Dec 1987

Pagination or Media Count : 96

Abstract : The biological retina is a compact, real-time image processor. It performs analog computations in parallel in depth. Such processing capabilities have so far been unattainable in comparably sized man-made processors. This thesis investigates using VLSI technology and a three dimensional architectural approach in designing an electronic retina. This effort involves the comparison of alternative 3D designs and the implementation of VLSI circuitry capable of low-level image processing. The 3D architectures compared include a model based on the Hughes 3D computer, a model using a monolithic wafer with multiple circuit layers, and a model using stacked wafers with fiber optic interconnects. A conventional 2D architecture is presented for comparison/reference. Circuits for photo detection, and spatial and temporal processing were implemented. It was shown that using VLSI analog circuits and a 3D architecture it is feasible to fabricate a real-time image processor in a compact package.

Descriptors :   *IMAGE PROCESSING, *RETINA, *CYBERNETICS, ANALOG SYSTEMS, ARCHITECTURE, CIRCUITS, COMPARISON, COMPUTATIONS, ELECTRONICS, FIBER OPTICS, LAYERS, LOW LEVEL, PROCESSING, PROCESSING EQUIPMENT, REAL TIME, STACKING, THREE DIMENSIONAL, WAFERS, ANATOMICAL MODELS, BIOMECHANICS, PHOTORECEPTORS, THESES, PHOTOTRANSISTORS, PHOTODIODES, MONOLITHIC STRUCTURES(ELECTRONICS)

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE