标题:Rotation axis estimation for the derotator calibration with machine vision measurement of the auxiliary laser
作者:Yin, Yongkai; Altmann, Bettina; Pape, Christian; Reithmeier, Eduard
通讯作者:Yin, YK;Yin, YK
作者机构:[Yin, Yongkai; Altmann, Bettina; Pape, Christian; Reithmeier, Eduard] Leibniz Univ Hannover, Inst Measurement & Automat Control, Nienburger Str 17, D- 更多
会议名称:Conference on Optical Metrology and Inspection for Industrial Applications V held as part of SPIE/COS Photonics Asia Conference
会议日期:OCT 11-13, 2018
来源:OPTICAL METROLOGY AND INSPECTION FOR INDUSTRIAL APPLICATIONS V
出版年:2018
卷:10819
DOI:10.1117/12.2500549
关键词:rotation axis estimation; binocular stereo vision; derotator; calibration; least squares fitting; auxiliary laser; 3D measurement
摘要:A key problem when using the derotator is to ensure the coaxial alignment between the optical axis of the derotator and the rotation axis of the measured object. Moreover, accurate measurement of the rotation axis is the prerequisite of achieving the coaxial alignment. In this paper, we propose a strategy for estimation of the rotation axis with the assistant of an auxiliary laser and a binocular stereo vision sensor. When a laser source is temporarily attached to the measured object or the rotor shaft, the rotation of the laser will generate a ruled surface. The binocular sensor can accurately measure the coordinates of laser dots in three-dimensional (3D) space. The pose vector of the laser in each certain rotation angle can be estimated with measured 3D coordinates of the laser dots. Finally, the rotation axis of the object can be estimated with multiple pose vectors considering the constraint of the fixed axis rotation. The validity and precision of this proposed strategy are demonstrated by means of experiments.
收录类别:CPCI-S;EI;SCOPUS
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059405448&doi=10.1117%2f12.2500549&partnerID=40&md5=e18c75e03074a486d0f0fd7896eb0cc9
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