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Proceedings Paper

Calibration of structured light-based vision sensor with four groups of laser device and camera
Author(s): Xiaoyang Yu; Qiang Dai; Jianying Fan; Yang Wang
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Paper Abstract

In this paper, the vision sensor is made up of four laser devices (LD) and four cameras. Standard difference value contrast method of calibration is put forward. The whole system’s parameter calibration is consisted by four sub-system’s calibration independently. Special target probe moves in standard grid mode in the measured two-dimensional plane. Gray-level centroid method is used to acquire four groups standard grid node. From the difference of standard grid node the segment linear calibration equations are obtained. The whole measured section is divided as grid block by every adjacent group standard mean coordinate values Z and Y. In the grid block all the measured coordinate values are calibrated by segment linear equations along Z and Y axis direction. The whole system is calibrated only by getting data once. The system calibration result shows the system measurement errors is less than 0.2 mm within 100 mm depth measurement.

Paper Details

Date Published: 20 January 2005
PDF: 6 pages
Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); doi: 10.1117/12.576432
Show Author Affiliations
Xiaoyang Yu, Harbin Univ. of Science and Technology (China)
Qiang Dai, Harbin Univ. of Science and Technology (China)
Jianying Fan, Harbin Univ. of Science and Technology (China)
Yang Wang, Harbin Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 5633:
Advanced Materials and Devices for Sensing and Imaging II
Anbo Wang; Yimo Zhang; Yukihiro Ishii, Editor(s)

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