Evaluation of Direct-View Imaging Devices

  • J. A. Hall
Part of the Optical Physics and Engineering book series (OPEG)


Image-intensifier devices have traditionally been evaluated by a somewhat subjective estimate of performance in terms of output picture quality, particularly limiting resolution of the output image as seen by a human observer, as a function of input image illumination. To translate these subjective impressions into quantitative data, both to spectify tube performance objectively and to identify the factors which govern performance as a guide to corrective measures, workers have agreed on several quantitative measurements of image-intensifier performance. Most important are measurements which determine the sensitivity, in terms of the brightness gain and the contrast degradation in the device due to background,* and the resolution performance of the device. Following Perrin,1 we believe limiting resolution is completely unsatisfactory as a measure of resolution performance, and have standardized on the modulation transfer function to describe image-intensifier resolution performance.


Spatial Frequency Test Pattern Modulation Transfer Function Image Intensifier Output Image 
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  1. 1.
    Fred. H. Perrin, “Methods of Appraising Photographic Systems,” JSMPTE 69, 151–157, 239, 249 (March/April 1960).CrossRefGoogle Scholar
  2. 2.
    D. H. MacRae and R. E. J. Halliday, “An 8 × 10 Transparency Illuminator for Television,” JSMPTE 75, 246–247 (1966).Google Scholar
  3. 3.
    Igor Limansky, “A New Resolution Chart for Imaging Systems,” The Electronic Engineer (June 1968).Google Scholar
  4. 4.
    W. L. Wilcock, in Advances in Electronics and Electron Physics, Vol. 22, Academic Press, New York (1966), p. 535.Google Scholar

Copyright information

© Springer Science+Business Media New York 1971

Authors and Affiliations

  • J. A. Hall
    • 1
  1. 1.Westinghouse Defense and Space CenterBaltimoreUSA

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