Calibration errors in laser-scanning 3D-vision measurement using the space encoding method

Xiaoyang Yu; Jian Zhang; Liying Wu; Qing Lin; Xifu Qiang

doi:10.1117/12.318405

10 August 1998 Calibration errors in laser-scanning 3D-vision measurement using the space encoding method

Xiaoyang Yu, Jian Zhang, Liying Wu, Qing Lin, Xifu Qiang

Proceedings Volume 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II; (1998) https://doi.org/10.1117/12.318405
Event: Photonics China '98, 1998, Beijing, China

Abstract

Space encoding is the effective method saving image- acquisition time in structure light 3D vision. In this paper, we propose calibration parameters, which do not include camera inner parameters, of the rangefinder using scanning-based spatial code pattern. We discuss the influence of calibration errors on rangefinder measuring. A model of the systematic calibration errors is developed based on the geometry of the rangefinder. According to given rangefinder accuracy, the limits to calibration errors are set from the model. An example is cited. Moreover, we discuss the influence of the shifting of the camera lens center and the polyhedral mirror reflecting point on the rangefinder precision.

Citation Download Citation

Xiaoyang Yu, Jian Zhang, Liying Wu, Qing Lin, and Xifu Qiang "Calibration errors in laser-scanning 3D-vision measurement using the space encoding method", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); https://doi.org/10.1117/12.318405

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