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Proceedings Paper

The Availability And Accuracy Using Direct Linear Transformations For The High-Speed Stereophotography In Explosion Processes
Author(s): Wu Lingguang; Ding Jiongwang
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Paper Abstract

A large amount of experiments have demonstrated that Direct Linear Transtormations (DLT) can be used to process the observations of the high-speed stereophotography in explosion processes. An accuracy of 2-3 cm can be obtained under the following conditions, photoscale 1: 1000; simultaneous exposure frequency 1000HZ; about the same elevation of two cameras; the intersecting angle of two principal optical axes 30°-75°; better distribution of the control points. Also the accuracy can be up to the order of a few decimeters even if the elevation difference of two cameras is relatively large, the intersecting angle is as small as 7.5°, and no control points in the target area. The intersecting angle has a significant influence on the accuracy of X-coordinates, and the larger elevation difference of the two cameras damages the accuracy of Z-coordinates. Nevertheless, the distribution of the control points have an important effect on the accuracy of X-,Y-,and Z-coordinates, as a result, that no control points exist in the explosion area, or cotrol points are available in one horizontal plane should be avoided.

Paper Details

Date Published: 7 June 1989
PDF: 4 pages
Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); doi: 10.1117/12.969249
Show Author Affiliations
Wu Lingguang, Changsha Institude of Mining and Metallurgy (United States)
Ding Jiongwang, Wuhan technical University of Surveyina and Mappoing (China)

Published in SPIE Proceedings Vol. 1032:
18th Intl Congress on High Speed Photography and Photonics
DaHeng Wang, Editor(s)

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