Plane-constraint-based calibration method for a galvanometric laser scanner

Laser stripe vision sensors have limited application when the whole surface of an object has to be measured; therefore, a galvanometric laser scanner is presented using a one-mirror galvanometer element as its mechanical device to drive the light stripe to sweep along the object. A flexible plane-co...

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Main Authors: Yang Mao, Liangcai Zeng, Jun Jiang, Chengyi Yu
Format: Article
Language:English
Published: SAGE Publishing 2018-05-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1177/1687814018773670
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author Yang Mao
Liangcai Zeng
Jun Jiang
Chengyi Yu
author_facet Yang Mao
Liangcai Zeng
Jun Jiang
Chengyi Yu
author_sort Yang Mao
collection DOAJ
description Laser stripe vision sensors have limited application when the whole surface of an object has to be measured; therefore, a galvanometric laser scanner is presented using a one-mirror galvanometer element as its mechanical device to drive the light stripe to sweep along the object. A flexible plane-constraint together with a look-up table calibration algorithm by viewing a planar calibration target from unknown orientations is presented to calibrate the proposed galvanometric laser scanner. The plane-constraint method generates a larger number of control points by imposing a plane constraint on the control points. Compared with the invariance of double cross-ratio, the plane-constraint-based calibration method generates the same number of control points without error propagation. Contrast experiments are conducted to verify the efficiency and accuracy of the proposed calibration method.
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spelling doaj.art-11b05c9b28ab4f41a6faa87fba7491732022-12-21T19:57:57ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402018-05-011010.1177/1687814018773670Plane-constraint-based calibration method for a galvanometric laser scannerYang Mao0Liangcai Zeng1Jun Jiang2Chengyi Yu3Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan, ChinaKey Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan, ChinaKey Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan, ChinaState Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, ChinaLaser stripe vision sensors have limited application when the whole surface of an object has to be measured; therefore, a galvanometric laser scanner is presented using a one-mirror galvanometer element as its mechanical device to drive the light stripe to sweep along the object. A flexible plane-constraint together with a look-up table calibration algorithm by viewing a planar calibration target from unknown orientations is presented to calibrate the proposed galvanometric laser scanner. The plane-constraint method generates a larger number of control points by imposing a plane constraint on the control points. Compared with the invariance of double cross-ratio, the plane-constraint-based calibration method generates the same number of control points without error propagation. Contrast experiments are conducted to verify the efficiency and accuracy of the proposed calibration method.https://doi.org/10.1177/1687814018773670
spellingShingle Yang Mao
Liangcai Zeng
Jun Jiang
Chengyi Yu
Plane-constraint-based calibration method for a galvanometric laser scanner
Advances in Mechanical Engineering
title Plane-constraint-based calibration method for a galvanometric laser scanner
title_full Plane-constraint-based calibration method for a galvanometric laser scanner
title_fullStr Plane-constraint-based calibration method for a galvanometric laser scanner
title_full_unstemmed Plane-constraint-based calibration method for a galvanometric laser scanner
title_short Plane-constraint-based calibration method for a galvanometric laser scanner
title_sort plane constraint based calibration method for a galvanometric laser scanner
url https://doi.org/10.1177/1687814018773670
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AT liangcaizeng planeconstraintbasedcalibrationmethodforagalvanometriclaserscanner
AT junjiang planeconstraintbasedcalibrationmethodforagalvanometriclaserscanner
AT chengyiyu planeconstraintbasedcalibrationmethodforagalvanometriclaserscanner