20 September 2002 Theory and error analysis of 3-D measure system of structural light
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Proceedings Volume 4927, Optical Design and Testing; (2002); doi: 10.1117/12.471700
Event: Photonics Asia, 2002, Shanghai, China
Abstract
In this paper, the 3-D measuring system based on structure-light, which principle is that its distortion can be transformed into the height change in the direction of the stripe if a single-stripe light is emitted and observed sideways and a generator emitting a single-stripe light and a camera can make up of a 3-D measuring system, was designed in order to inspect the shape of product surface on-line in the industrial production. At first, this paper introduces the structure of the 3-D measuring system using the single-stripe structured-light and its buildup. At second, its operating principle is introduces, its mathematical model is established and the calibrating method for it is put forward. At last, its prototype is produced and calibrated. The experimental result shows that the mathematical model put forward in this paper is suitable for engineering, the system calibration method suggested in this paper becomes more simple than other calibration methods, the system prototype has the range of 630mm(Depth)×400mm(Height) and the accurate of 0.3%(Depth)×0.5%(Height).
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Xiaoyang Yu, Yujing Qiao, Jing Lu, Yijie Wang, Jun Zhao, "Theory and error analysis of 3-D measure system of structural light", Proc. SPIE 4927, Optical Design and Testing, (20 September 2002); doi: 10.1117/12.471700; https://doi.org/10.1117/12.471700
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KEYWORDS
Calibration

Imaging systems

Cameras

Error analysis

Mathematical modeling

3D metrology

Distortion

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