Octal gray-code phase unwrapping for high-speed fringe projection profilometry
The speed of a fringe projection profilometry system is of great importance for the measurement of dynamic objects. The previous quaternary gray-code phase unwrapping method uses only five patterns to recover an absolute phase which is suitable for high-speed measurement. However, this method requir...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/87631 http://hdl.handle.net/10220/47663 |
| _version_ | 1826125011473137664 |
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| author | He, Xiaoyu Zheng, Dongliang Qian, Kemao |
| author2 | Interdisciplinary Graduate School (IGS) |
| author_facet | Interdisciplinary Graduate School (IGS) He, Xiaoyu Zheng, Dongliang Qian, Kemao |
| author_sort | He, Xiaoyu |
| collection | NTU |
| description | The speed of a fringe projection profilometry system is of great importance for the measurement of dynamic objects. The previous quaternary gray-code phase unwrapping method uses only five patterns to recover an absolute phase which is suitable for high-speed measurement. However, this method requires a pre-knowledge of the minimum depth and it limits the object to move in a small range of depth. To extend the measurement range, we proposed an octal gray-code phase unwrapping method, in which five patterns are required. We apply this method to different objects and analysis the experiment results. This method can recover a good-quality phase map for sample objects, while its performance is decreased when the object is complex or with an improper defocusing level. |
| first_indexed | 2024-10-01T06:29:45Z |
| format | Conference Paper |
| id | ntu-10356/87631 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:29:45Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/876312020-11-01T04:43:43Z Octal gray-code phase unwrapping for high-speed fringe projection profilometry He, Xiaoyu Zheng, Dongliang Qian, Kemao Interdisciplinary Graduate School (IGS) IWAIT-IFMIA 2019 Phase Unwrapping Octal Gray Code DRNTU::Engineering::Electrical and electronic engineering The speed of a fringe projection profilometry system is of great importance for the measurement of dynamic objects. The previous quaternary gray-code phase unwrapping method uses only five patterns to recover an absolute phase which is suitable for high-speed measurement. However, this method requires a pre-knowledge of the minimum depth and it limits the object to move in a small range of depth. To extend the measurement range, we proposed an octal gray-code phase unwrapping method, in which five patterns are required. We apply this method to different objects and analysis the experiment results. This method can recover a good-quality phase map for sample objects, while its performance is decreased when the object is complex or with an improper defocusing level. Accepted version 2019-02-14T03:02:25Z 2019-12-06T16:46:04Z 2019-02-14T03:02:25Z 2019-12-06T16:46:04Z 2019 Conference Paper He, X., Zheng, D. & Qian, K. (2019). Octal gray-code phase unwrapping for high-speed fringe projection profilometry. IWAIT-IFMIA 2019 https://hdl.handle.net/10356/87631 http://hdl.handle.net/10220/47663 en © 2019 Institute of Electrical and Electronics Engineers (IEEE). All rights reserved. This paper was published in International Workshop on Advanced Image Technology (IWAIT) and is made available with permission of Institute of Electrical and Electronics Engineers (IEEE). application/pdf |
| spellingShingle | Phase Unwrapping Octal Gray Code DRNTU::Engineering::Electrical and electronic engineering He, Xiaoyu Zheng, Dongliang Qian, Kemao Octal gray-code phase unwrapping for high-speed fringe projection profilometry |
| title | Octal gray-code phase unwrapping for high-speed fringe projection profilometry |
| title_full | Octal gray-code phase unwrapping for high-speed fringe projection profilometry |
| title_fullStr | Octal gray-code phase unwrapping for high-speed fringe projection profilometry |
| title_full_unstemmed | Octal gray-code phase unwrapping for high-speed fringe projection profilometry |
| title_short | Octal gray-code phase unwrapping for high-speed fringe projection profilometry |
| title_sort | octal gray code phase unwrapping for high speed fringe projection profilometry |
| topic | Phase Unwrapping Octal Gray Code DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/87631 http://hdl.handle.net/10220/47663 |
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