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Proceedings Article

Calibration of low-cost measurement system by using a consumer digital stereo camera

[+] Author Affiliations
Ryuji Matsuoka, Genki Takahashi, Kazuyoshi Asonuma

Kokusai Kogyo Co., Ltd. (Japan)

Proc. SPIE 8085, Videometrics, Range Imaging, and Applications XI, 80850U (June 21, 2011); doi:10.1117/12.889290
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From Conference Volume 8085

  • Videometrics, Range Imaging, and Applications XI
  • Fabio Remondino; Mark R. Shortis
  • Munich, Germany | May 23, 2011

abstract

The consumer digital stereo camera FinePix REAL 3D W1, which was designed to take a pair of stereo images for stereo viewing, was released in August 2009. The aim of our study is to evaluate camera calibration methods for a low-cost and easy-operation system to measure dimensions of an object on a sub-meter scale only by using a pair of stereo images acquired by the camera without any controls such as control points whose spatial locations are known or a ruler which provides the scale of the object. Three camera calibration methods were evaluated by estimation errors of lengths of line segments measured without any controls. The experiment results indicate that the best calibration method would be the method that ordinary camera calibration is first executed for each imaging unit in order to estimate its image distortion model, and then alignment between two imaging units is estimated by using two sets of the exterior orientation parameters of both imaging units obtained in the ordinary camera calibration executed previously. The experiment results indicate that the suitable calibration method would be able to provide sufficiently accurate measurement results less than 0.4 pixels on an image as well.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Ryuji Matsuoka ; Genki Takahashi and Kazuyoshi Asonuma
"Calibration of low-cost measurement system by using a consumer digital stereo camera", Proc. SPIE 8085, Videometrics, Range Imaging, and Applications XI, 80850U (June 21, 2011); doi:10.1117/12.889290; http://dx.doi.org/10.1117/12.889290


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