Details
Original language | English |
---|---|
Pages (from-to) | 456-463 |
Number of pages | 8 |
Journal | Optics and Lasers in Engineering |
Volume | 121 |
Early online date | 16 May 2019 |
Publication status | Published - 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
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Electrical and Electronic Engineering
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In: Optics and Lasers in Engineering, Vol. 121, 10.2019, p. 456-463.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Machine-vision-guided rotation axis alignment for an optomechanical derotator
AU - Yin, Yongkai
AU - Altmann, Bettina
AU - Pape, Christian
AU - Reithmeier, Eduard
N1 - Funding information: This work was supported by the Humboldt Research Fellowship for Postdoctoral Researchers [grant number 1189587] and the Sino-German Center for Research Promotion (SGCRP) [grant number GZ1391].
PY - 2019/10
Y1 - 2019/10
N2 - 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.
AB - 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.
KW - 3D measurement
KW - Binocular stereo vision
KW - Calibration
KW - Image derotator
KW - Rotation axis estimation
UR - http://www.scopus.com/inward/record.url?scp=85065677084&partnerID=8YFLogxK
U2 - 10.1016/j.optlaseng.2019.05.001
DO - 10.1016/j.optlaseng.2019.05.001
M3 - Article
AN - SCOPUS:85065677084
VL - 121
SP - 456
EP - 463
JO - Optics and Lasers in Engineering
JF - Optics and Lasers in Engineering
SN - 0143-8166
ER -