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Proceedings Paper

Toward real-time dynamic close-range photogrammetry
Author(s): Colin W. Urquhart; J. Paul Siebert
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Paper Abstract

The goal of the Active Stereo Probe (ASP) project is the on-line recovery of 3D surfaces from stereo images captured using a dynamic binocular robot vision system. In this paper, we present results of 3D surface recovery using scale-space automatic stereo-matching. These results have been considerably enhanced by bathing the scene in textured light provided by the ASP active illumination source. We also describe a two stage approach that incorporates photogrammetric techniques into the ASP system to maintain calibration during dynamic system operation. Direct Linear Transform based calibration provides an initial static calibration. Thereafter, dynamic calibration is maintained by exploiting high resolution encoders to track the systems external orientation parameters and thereby constrain the search space of subsequent bundle adjustment. We expect this strategy to achieve the speed and accuracy required to satisfy many on-line 3D surface recovery applications.

Paper Details

Date Published: 22 October 1993
PDF: 12 pages
Proc. SPIE 2067, Videometrics II, (22 October 1993); doi: 10.1117/12.162130
Show Author Affiliations
Colin W. Urquhart, The Turing Institute Ltd. (United Kingdom)
J. Paul Siebert, The Turing Institute Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 2067:
Videometrics II
Sabry F. El-Hakim, Editor(s)

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