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Proceedings Paper

MTF Analysis Techniques Applied To Erts-1 And Skylab-2 Imagery
Author(s): R. Welch
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Paper Abstract

Prior to the launch of the Earth Re-sources Technology Satellite (ERTS-1) and Skylab vehicles the performance characteristics of the different sensors (Table I) were ambiguously defined in relation to proposed cartographic and earth resources applications (Ref. 1,2,3,4). As a result, opinions con-cerning anticipated image quality differed, and factors contributing to the various interpretations of potential image quality included: 1) differences in the photographic and electro-optical engineering definitions of resolving power; 2) a general lack of experience with ultra small-scale imagery; and 3) problems encountered in attempting to relate design criteria and performance estimates to image quality (Ref. 5,6,7). In the latter instance, limited communications between system design engineers and earth scientists/cartographers further confused the issues. As a consequence of these and other factors, an independent effort was made to predict and measure ERTS and Skylab system performance using MTF analysis techniques, and to translate the results of these analyses into the photographic resolution values with which the cartographic community are most familiar (Ref. 8,9,10). Since the approach used to evaluate sensor performance has involved comparisons of predicted and measured MTF values, it has also been possible to assess the reliability of the techniques employed.

Paper Details

Date Published: 1 June 1974
PDF: 6 pages
Proc. SPIE 0046, Image Assessment and Specification, (1 June 1974); doi: 10.1117/12.954010
Show Author Affiliations
R. Welch, University of Georgia (United States)


Published in SPIE Proceedings Vol. 0046:
Image Assessment and Specification
David T. Dutton, Editor(s)

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