Real-Time Pattern Recognition Using a Modified Liquid Crystal Television in a Coherent Optical Correlator.

Abstract

A commercially available flat screen Liquid Crystal Television (LCTV) has been slightly modified and used as a spatial light modulator in a Vander Lugt type coherent optical correlator. The small, (54 mm x 40.5 mm) inexpensive, (approx.= $100) LCTV was used as a replacement for extremely expensive modulators normally used in optical data processing such as the Hughes Liquid Crystal Light Valve and the Litton Magneto-Optic Device. Results show that the resolution, contrast, and speed of the LCTV in its present form, are sufficient for some basic real-time pattern recognition applications. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1985
Accession Number
ADA168042

Entities

People

  • Don A . Gregory
  • Tracy D. Hudson

Organizations

  • United States Army Aviation and Missile Command

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Correlators
  • Crystal Structure
  • Data Processing
  • Electrical Engineering
  • Engineering
  • Helium Neon Lasers
  • Liquid Crystals
  • Military Research
  • Modulators
  • Optical Correlators
  • Optical Modulators
  • Pattern Recognition
  • Photographs
  • Recognition
  • Standards

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Materials Science and Engineering.
  • Optical Fiber Sensing and Electromagnetic Propagation.

Technology Areas

  • AI & ML