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Determination of optical transfer functions by direct measurement

Authors
Journal
Photogrammetria
0031-8663
Publisher
Elsevier
Publication Date
Volume
33
Issue
4
Identifiers
DOI: 10.1016/0031-8663(77)90023-0

Abstract

Abstract The success of using the Modulation Transfer Function (MTF) in characterizing image location and image quality for aerial mapping cameras is dependent upon the ability to successfully and accurately measure this quantity. This paper will present the results of such measurements, made by the Air Force Avionics Laboratory, on two cameras, A Wild RC-8 R-10 and a Zeiss RMK AR 15/23. MTF measurements were made on-axis and at 10°, 20°, 30°, 40° and 45° for both radial and tangential orientations. Through-focus runs at each field position were conducted. All measurements were made in filtered green light ( λ = 546.1 nm). The results are compared with those made at the “Physikalisch-Technische Bundesanstalt” in West Germany.

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