Investigation of Alphanumeric Symbol Legibility Determination by Use of Fourier Spatial Frequency Components.

Abstract

Legibility is of fundamental importance in pattern recognition. Legibility of five sets was predicted by using maximum-minimum Euclidean distance of separation in a feature space spanned by truncated, two-dimensional, discrete Fourier spatial frequency components of alphanumeric symbols. For a symbol pair, as distance of separation increased the number of errors decreased and the majority of the errors occurred within the five nearest symbols to the symbol.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA034279

Entities

People

  • Harvey D. Dahljelm

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Computers
  • Diffraction
  • Electrical Engineering
  • Engineering
  • Flying Spot Scanners
  • Fourier Analysis
  • Fourier Transformation
  • Frequency
  • Pattern Recognition
  • Recognition
  • Schools
  • Space Operations
  • Statistics
  • Test Sets
  • Two Dimensional

Readers

  • Approximation Theory.
  • Calculus or Mathematical Analysis
  • Human-Computer Interaction (HCI).

Technology Areas

  • AI & ML
  • AI & ML - Machine Translation
  • Space