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Proceedings Paper

Error analysis and compensation of binocular-stereo-vision measurement system
Author(s): Tao Zhang; Junjie Guo
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Paper Abstract

Measurement errors in binocular stereo vision are analyzed. It is proved that multi-stage calibration can efficiently reduce systematic errors due to depth of field. Furthermore, for difficulty in carry-out of multi-stage calibration, the compensation methods of errors are presented in this paper. First, using standard plane template, system calibration is completed. Then, moving the cameras to different depths, multiple views are taken and 3d coordinates of special points on template are calculated. Finally, error compensation model in depth is established with least square fitting. Experiment based on CMM indicates the relative error of measurement is reduced by 5.1% with the proposed method in this paper. This is of practical value in expanding measurement range in depth and improving measurement accuracy.

Paper Details

Date Published: 3 October 2008
PDF: 9 pages
Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71552Q (3 October 2008); doi: 10.1117/12.814600
Show Author Affiliations
Tao Zhang, Xi'an Jiaotong Univ. (China)
Junjie Guo, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 7155:
Ninth International Symposium on Laser Metrology
Chenggen Quan; Anand Asundi, Editor(s)

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