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Proceedings Paper

Creating small-format camera coordinates: 3 techniques for interior orientation
Author(s): William S. Warner
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Paper Abstract

Interior orientation (the initial step in comparator-based photogrammetry) requires a set of known photo-coordinates to act as reference points. Fiducials serve this purpose on metric survey cameras as do reseau targets on small-format, semi-metric cameras. Standard small cameras, however, are equipped with neither fiducials nor a reseau plate. To overcome this problem three attempts were made to create small-format camera coordinates. In the first method a clear template with four calibrated cross-hair targets was superimposed on a 35 mm diapositive (after the film was exposed). The second technique installed fiducials in the 35 mm camera body. In the third technique, original 645 imagery was custom enlarged so as to expose the entire frame edge on the print.

Paper Details

Date Published: 15 October 1993
PDF: 8 pages
Proc. SPIE 1943, State-of-the-Art Mapping, (15 October 1993); doi: 10.1117/12.157145
Show Author Affiliations
William S. Warner, JORDFORSK--Ctr. for Soil and Environmental Research (Norway)

Published in SPIE Proceedings Vol. 1943:
State-of-the-Art Mapping
Bill P. Clark; Andy Douglas; Bryan L. Foley; Brian Huberty; LeLand D. Whitmill, Editor(s)

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