Accession Number : ADD010840

Title :   Hybrid Optical-Digital Pattern Recognition Apparatus and Method.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Leighty,R D ; Lukes,G E

Report Date : 23 Nov 1982

Pagination or Media Count : 9

Abstract : An improved apparatus and method of pattern recognition and of providing pattern recognition data, which possesses the advantages of optical power spectral analysis and digital image processing. An optical read-only memory means such as a photographic transparency is sampled at a plurality of sampling locations with a beam of coherent light. After passage through the transparency, the beam is directed either to a first channel including a transform lens and a wedge-ring detector or to a second channel including an imaging lens and a photodetector array. The improved pattern recognition data is the spatial frequency data provided by the wedge-ring detector and the spatial intensity data provided by the array detector. Hierarchal pattern recognition decisions are made using the two types of data during processing operations to provide improved pattern recognition results. (Author)

Descriptors :   *Patents, *Pattern recognition, *Digital systems, *Hybrid systems, *Image processing, Laser beams, Optical storage, Analog to digital converters, Memory devices, Read only memories, Photodetectors, Lenses, Detectors, Coherent optical radiation, Position(Location), Optical analysis, Spatial distribution, Decision making, Intensity, Visible spectra, Processing, Converters, Operation, Frequency, Power spectra, Images, Arrays

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE