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GOBO projection for 3D measurements at highest frame rates: a performance analysis
Aperiodic sinusoidal patterns that are cast by a GOBO (GOes Before Optics) projector are a powerful tool for optically measuring the surface topography of moving or deforming objects with very high speed and accuracy. We optimised the first experimental setup that we were able to measure inflating c...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6168569/ https://www.ncbi.nlm.nih.gov/pubmed/30302242 http://dx.doi.org/10.1038/s41377-018-0072-3 |
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author | Heist, Stefan Dietrich, Patrick Landmann, Martin Kühmstedt, Peter Notni, Gunther Tünnermann, Andreas |
author_facet | Heist, Stefan Dietrich, Patrick Landmann, Martin Kühmstedt, Peter Notni, Gunther Tünnermann, Andreas |
author_sort | Heist, Stefan |
collection | PubMed |
description | Aperiodic sinusoidal patterns that are cast by a GOBO (GOes Before Optics) projector are a powerful tool for optically measuring the surface topography of moving or deforming objects with very high speed and accuracy. We optimised the first experimental setup that we were able to measure inflating car airbags at frame rates of more than 50 kHz while achieving a 3D point standard deviation of ~500 µm. Here, we theoretically investigate the method of GOBO projection of aperiodic sinusoidal fringes. In a simulation-based performance analysis, we examine the parameters that influence the accuracy of the measurement result and identify an optimal pattern design that yields the highest measurement accuracy. We compare the results with those that were obtained via GOBO projection of phase-shifted sinusoidal fringes. Finally, we experimentally verify the theoretical findings. We show that the proposed technique has several advantages over conventional fringe projection techniques, as the easy-to-build and cost-effective GOBO projector can provide a high radiant flux, allows high frame rates, and can be used over a wide spectral range. |
format | Online Article Text |
id | pubmed-6168569 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61685692018-10-09 GOBO projection for 3D measurements at highest frame rates: a performance analysis Heist, Stefan Dietrich, Patrick Landmann, Martin Kühmstedt, Peter Notni, Gunther Tünnermann, Andreas Light Sci Appl Article Aperiodic sinusoidal patterns that are cast by a GOBO (GOes Before Optics) projector are a powerful tool for optically measuring the surface topography of moving or deforming objects with very high speed and accuracy. We optimised the first experimental setup that we were able to measure inflating car airbags at frame rates of more than 50 kHz while achieving a 3D point standard deviation of ~500 µm. Here, we theoretically investigate the method of GOBO projection of aperiodic sinusoidal fringes. In a simulation-based performance analysis, we examine the parameters that influence the accuracy of the measurement result and identify an optimal pattern design that yields the highest measurement accuracy. We compare the results with those that were obtained via GOBO projection of phase-shifted sinusoidal fringes. Finally, we experimentally verify the theoretical findings. We show that the proposed technique has several advantages over conventional fringe projection techniques, as the easy-to-build and cost-effective GOBO projector can provide a high radiant flux, allows high frame rates, and can be used over a wide spectral range. Nature Publishing Group UK 2018-10-03 /pmc/articles/PMC6168569/ /pubmed/30302242 http://dx.doi.org/10.1038/s41377-018-0072-3 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Heist, Stefan Dietrich, Patrick Landmann, Martin Kühmstedt, Peter Notni, Gunther Tünnermann, Andreas GOBO projection for 3D measurements at highest frame rates: a performance analysis |
title | GOBO projection for 3D measurements at highest frame rates: a performance analysis |
title_full | GOBO projection for 3D measurements at highest frame rates: a performance analysis |
title_fullStr | GOBO projection for 3D measurements at highest frame rates: a performance analysis |
title_full_unstemmed | GOBO projection for 3D measurements at highest frame rates: a performance analysis |
title_short | GOBO projection for 3D measurements at highest frame rates: a performance analysis |
title_sort | gobo projection for 3d measurements at highest frame rates: a performance analysis |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6168569/ https://www.ncbi.nlm.nih.gov/pubmed/30302242 http://dx.doi.org/10.1038/s41377-018-0072-3 |
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