Limits of Pattern Discrimination in Human Vision.

Abstract

This investigation was focused on identification of various limits of human spatial discrimination, two-dimensional sampling properties of the retinal photoreceptor lattice, and the consequences for spatial vision. Highlights from this study are briefly listed. 1) Foveal Spatial Discriminations are hyperacuity tasks; 2) The spatial-frequency discrimination function ( delta f/f vs f) is segmented; 3) The discrimination segments can be related to retinal sampling; 4) Scaling mechanisms apply to low resolution tasks; 5) The photoreceptor lattice is a highly ordered hexagonal array; 6) A hexagonal component exists in spatial discrimination; 7) A new 'metric' model of spatial vision is based on visual sampling.

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Document Details

Document Type
Technical Report
Publication Date
Feb 03, 1986
Accession Number
ADA170756

Entities

People

  • Joy Hirsch

Organizations

  • Yale University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Data Analysis
  • Detectors
  • Frequency
  • Frequency Bands
  • Identification
  • Interpolation
  • Intervals
  • Low Resolution
  • Medical Personnel
  • Normal Distribution
  • Observation
  • Orientation (Direction)
  • Probability
  • Sampling
  • Segmented
  • Symmetry
  • Two Dimensional

Readers

  • Image Processing and Computer Vision.
  • Materials Science and Engineering.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.