MOHAMMED ISA MOHAMMED.ISA@NOTTINGHAM.AC.UK
Research Fellow
Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology
Isa, Mohammed A.; Sims-Waterhouse, Danny; Piano, Samanta; Leach, Richard
Authors
Danny Sims-Waterhouse
Dr SAMANTA PIANO SAMANTA.PIANO@NOTTINGHAM.AC.UK
Professor of Metrology
RICHARD LEACH RICHARD.LEACH@NOTTINGHAM.AC.UK
Chair in Metrology
Abstract
Optical three-dimensional coordinate measurement using stereo vision has systematic errors that affect measurement quality. This paper presents a scheme for measuring, modelling and correcting these errors. The position and orientation of a linear stage are measured with a laser interferometer while a stereo vision system tracks target points on the moving stage. With reference to the higher accuracy laser interferometer measurement, the displacement errors of the tracked points are evaluated. Regression using a neural network is used to generate a volumetric error model from the evaluated displacement errors. The regression model is shown to outperform other interpolation methods. The volumetric error model is validated by correcting the three-dimensional coordinates of the point cloud from a photogrammetry instrument that uses the stereo vision system. The corrected points from the measurement of a calibrated spherical artefact are shown to have size and form errors of less than 50 ?m and 110 ?m respectively. A reduction of up to 30% in the magnitude of the probing size error is observed after error correction is applied.
Citation
Isa, M. A., Sims-Waterhouse, D., Piano, S., & Leach, R. (2020). Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology. Precision Engineering, 64, 188-199. https://doi.org/10.1016/j.precisioneng.2020.04.010
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 13, 2020 |
Online Publication Date | Apr 20, 2020 |
Publication Date | 2020-07 |
Deposit Date | Apr 28, 2020 |
Publicly Available Date | Apr 21, 2021 |
Journal | Precision Engineering |
Print ISSN | 0141-6359 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 64 |
Pages | 188-199 |
DOI | https://doi.org/10.1016/j.precisioneng.2020.04.010 |
Public URL | https://nottingham-repository.worktribe.com/output/4354981 |
Publisher URL | https://www.sciencedirect.com/science/article/abs/pii/S0141635919309365?via%3Dihub |
Additional Information | This article is maintained by: Elsevier; Article Title: Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology; Journal Title: Precision Engineering; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.precisioneng.2020.04.010; Content Type: article; Copyright: © 2020 Elsevier Inc. All rights reserved. |
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