EVALUATION OF POINTING TO A SHARP EDGE.

Abstract

The report includes the design of an apparatus to measure the ability of observers to point on a sharp black white edge at a standard test distance of 6 meters to a least count of better than 0.1 second of arc. The parameters measured were the size of circular measuring marks, illumination, and occular openings. The results show the effect of these variables on the task, the optimum design parameters, and point out the wide variability in absolute observer performance in both tangent and center settings. The general results suggest a standard deviation of about 10 seconds of arc on the average at optimum conditions. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1968
Accession Number
AD0668260

Entities

People

  • J. E. Colcord
  • Kenneth Lund

Organizations

  • University of Washington

Tags

DTIC Thesaurus Topics

  • Computing-Related Activities
  • Data Science
  • Illumination
  • Information Science
  • Interdisciplinary Science
  • Mathematical Analysis
  • Mathematics
  • Observers
  • Optical Phenomena
  • Standards
  • Test And Evaluation

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Test and Evaluation
  • Vision Science/Vision Psychology/Cognitive Neuroscience.