Machine-vision-guided rotation axis alignment for an optomechanical derotator

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Authors

External Research Organisations

  • Shandong University

Details

Original languageEnglish
Pages (from-to)456-463
Number of pages8
JournalOptics and Lasers in Engineering
Volume121
Early online date16 May 2019
Publication statusPublished - Oct 2019

Abstract

An image derotator is a device that can compensate the image blur caused by the rotation of an object. However, a key problem when using a derotator is to ensure the coincident alignment between the rotation axes of the derotator and measured object. An approach of machine-vision-guided rotation axis alignment is proposed in this paper. Circular markers and a laser dot are deployed to indicate the rotation axes of the derotator and object, respectively. A binocular stereo sensor is established to estimate the poses of both axes. With the misalignment information between the two axes updated in real-time, axis alignment can be achieved through manual adjustment. The validity and precision of the proposed approach are demonstrated through experiments.

Keywords

    3D measurement, Binocular stereo vision, Calibration, Image derotator, Rotation axis estimation

ASJC Scopus subject areas

Cite this

Machine-vision-guided rotation axis alignment for an optomechanical derotator. / Yin, Yongkai; Altmann, Bettina; Pape, Christian et al.
In: Optics and Lasers in Engineering, Vol. 121, 10.2019, p. 456-463.

Research output: Contribution to journalArticleResearchpeer review

Yin Y, Altmann B, Pape C, Reithmeier E. Machine-vision-guided rotation axis alignment for an optomechanical derotator. Optics and Lasers in Engineering. 2019 Oct;121:456-463. Epub 2019 May 16. doi: 10.1016/j.optlaseng.2019.05.001
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