Measurement of the cross-sectional contour of H-shaped steel using multiple stereo pairs

Author

Lin, Ku Chin ; Lin, Lin-Chin ; Young, Un-Lin

Author_Institution

Dept. of Mech. Eng., Kun Shan Univ.

fYear

0

fDate

0-0 0

Abstract

Measurement of the cross-sectional (CS) contour of H-shaped steel using multiple stereo pairs is studied. Camera modeling and the calibration technique proposed by Zhang (1998) are implemented for such an application. An active approach of using laser light projection on the steel is used. It is advantageous to solve the image correspondence problem and improve the robustness of measurement accuracy. Experimental examples of measuring the CS contour of real H-shaped steel are presented for demonstration. The maximum error of measurement without considering the lens distortion is 2%, while the tolerance accepted by manufacturers is 3%. The results show that the proposed multiple stereo pairs are adequate for the measurement of the CS contour of H-shaped steel

Keywords

calibration; cameras; spatial variables measurement; steel; stereo image processing; H-shaped steel; calibration technique; camera modeling; cross-sectional contour; image correspondence problem; laser light projection; multiple stereo pairs; Calibration; Cameras; Coordinate measuring machines; Distortion measurement; Lenses; Mathematics; Noise robustness; Pixel; Size measurement; Steel;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Intelligence Methods and Applications, 2005 ICSC Congress on

Conference_Location

Istanbul

Print_ISBN

1-4244-0020-1

Type

conf

DOI

10.1109/CIMA.2005.1662340

Filename

1662340