The Variability of Spatial Resolution Estimates Obtained Using a CCD Camera

Abstract

We have previously developed techniques for measuring the spatial resolution of flight simulator displays. In the present experiment, we estimate the relative variability of the measurement technique and the display projectors they were designed to assess. We use the ratio of the standard deviation and mean of the resolution estimates as a measure of variability. Variability was found to be about 1.3% for grating transparencies illuminated by a stable light source. This value may be taken as the inherent variability of our measurement hardware and analysis procedures. Analogous measurements made on cathode ray tube (CRT) projectors resulted in a mean variability of about 4.3%. The difference between the two estimates, 3.0%, may be taken as a measure of the variability of the CRT projectors alone.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2006
Accession Number
ADA462516

Entities

People

  • George A. Geri
  • Kristin J. Caufield
  • Marc D. Winterbottom

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Cameras
  • Cathode Ray Tubes
  • Flight Simulators
  • Government Procurement
  • Governments
  • Light Sources
  • Measurement
  • Military Research
  • Physical Properties
  • Simulations
  • Simulators
  • Standards
  • Test And Evaluation
  • Training
  • Transparencies

Fields of Study

  • Physics

Readers

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