Accession Number : AD0737182

Title :   Character Identification by Holography and Coherent Spatial Filtering.

Descriptive Note : Research and development technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Constantinou,George

Report Date : OCT 1971

Pagination or Media Count : 29

Abstract : Techniques of coherent spatial filtering for character reading are examined. Fourier holograms are used as filters. Methods for improving character selectivity are investigated. The practical considerations for applying these techniques are discussed and the advantages of a coherent optical character reader over a conventional one are listed. (Author)

Descriptors :   (*DATA PROCESSING, CHARACTER RECOGNITION), (*CHARACTER RECOGNITION, STEREOPHOTOGRAPHY), PATTERN RECOGNITION, INPUT OUTPUT DEVICES, OPTICAL FILTERS, INFORMATION THEORY, LASERS

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE