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Proceedings Paper

Gray-Level Resolution Of Flying-Spot-Scanner Systems
Author(s): C. F. Shelton; H. H. Herd; J. J. Leybourne
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Paper Abstract

An analysis of the performance of a cathode-ray-tube flying-spot-scanner film reading system requires a treatment of the gray level resolution of the system. This paper discusses three types of gray level encoding schemes for a digital film reading system; equal transmission, equal density and equal reliability levels. The maximum number of detectable levels, or the minimum gray level change detectable, to a given reliability is presented along with a trade-off analysis and a discussion of the utility of each method. Calibration and measurement of a hardware system by analysis of maximum signal available is discussed.

Paper Details

Date Published: 1 November 1967
PDF: 10 pages
Proc. SPIE 0009, Photo-Optical Systems Evaluation, (1 November 1967); doi: 10.1117/12.978091
Show Author Affiliations
C. F. Shelton, IBM (United States)
H. H. Herd, IBM (United States)
J. J. Leybourne, IBM (United States)

Published in SPIE Proceedings Vol. 0009:
Photo-Optical Systems Evaluation
Fred M. Emens, Editor(s)

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