International Journal of Computational Intelligence Systems

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Volume 4, Issue 6, December 2011, Pages 1298 - 1306

A Calibration Method for A Linear Structured Light System with Three Collinear Points

Authors
Yan Liu, Qinglin Wang, Yuan Li, Jinhua She
Corresponding Author
Qinglin Wang
Received 23 August 2011, Accepted 25 November 2011, Available Online 1 December 2011.
DOI
10.2991/ijcis.2011.4.6.22How to use a DOI?
Keywords
Structured light plane calibration; Camera calibration; Three collinear points; RANSAC; Genetic algorithm.
Abstract

A calibration method to calibrate both the camera intrinsic parameters and the structured light projector based on three collinear points with any known distance is presented. First, fix one point of the target and move it in the camera field of view with unknown viewpoint at least six times. Next, use camera to obtain the image of the points so as to identify the camera intrinsic parameters. Then, move the target in the structure light plane at least twice. Using the calibrated camera obtains the images of the three points and adopts the principle of triangulation to work out the coordinates of the calibration points in the camera coordinate system. Finally, employ the random sample consensus algorithm to eliminate the outlier and adopt the genetic algorithm for system identification to find the coefficients of the structured light plane. The average absolute error and the average relative error of the segment measurement with this structured light system are 0.13 mm and 0.04%, respectively. Those show that the measuring accuracy of this system achieves the requirements of the basic error limit. Comparison results show that the measurement accuracy of our method is superior to the other method for the same targets.

Copyright
© 2011, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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<Previous Article In Issue
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Journal
International Journal of Computational Intelligence Systems
Volume-Issue
4 - 6
Pages
1298 - 1306
Publication Date
2011/12/01
ISSN (Online)
1875-6883
ISSN (Print)
1875-6891
DOI
10.2991/ijcis.2011.4.6.22How to use a DOI?
Copyright
© 2011, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - JOUR
AU  - Yan Liu
AU  - Qinglin Wang
AU  - Yuan Li
AU  - Jinhua She
PY  - 2011
DA  - 2011/12/01
TI  - A Calibration Method for A Linear Structured Light System with Three Collinear Points
JO  - International Journal of Computational Intelligence Systems
SP  - 1298
EP  - 1306
VL  - 4
IS  - 6
SN  - 1875-6883
UR  - https://doi.org/10.2991/ijcis.2011.4.6.22
DO  - 10.2991/ijcis.2011.4.6.22
ID  - Liu2011
ER  -