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Proceedings Paper

Geometrical accuracy measurement for large-scale steel bridge members
Author(s): Koji Takada; Masato Aketagawa; Kunio Torii; Shoji Ogawa; Yoshitaka Kozakura
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Paper Abstract

This paper presents a practical 3-dimensional measurement system which is applied to geometrical accuracy measurenient for large-scale steel bridge members. The measuring niethod is based on stereo vision using precision CCD-cameras linked with a personal computer. The developed system can automatically recognize every target point in its view field and determine theX Y and Z coordinates within a remarkable short time and the measurement accuracy of the system is better than 0. 5 mm for a view field of about 3 m(H) by 2. 3 m(v). This system is applied to an inspection station for the measurement of steel bridge members. The inspection station can measure the geometrical and dimensional accuracy of a steel bridge member of about 3 m x 4 m x 20 in in maximum size with an acceptable measurement accuracy and the results obtained from practical runs for the last three years verify the feasibility of the developed system.

Paper Details

Date Published: 22 September 1993
PDF: 8 pages
Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); doi: 10.1117/12.156499
Show Author Affiliations
Koji Takada, Nagaoka Univ. of Technology (Japan)
Masato Aketagawa, Nagaoka Univ. of Technology (Japan)
Kunio Torii, Nagaoka Univ. of Technology (Japan)
Shoji Ogawa, Nagaoka Univ. of Technology (Japan)
Yoshitaka Kozakura, Yokogawa Bridge Works Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 2101:
Measurement Technology and Intelligent Instruments
Li Zhu, Editor(s)

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