A novel light field imaging based 3D geometry measurement technique for turbomachinery blades
This paper presents a novel snapshot three-dimensional (3D) imaging technique for fast turbomachinery blade geometrical measurements. The proposed measurement system employs a microlens array based light-field camera to capture 3D blade geometry into one light-field image, from which 100 new perspec...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/151477 |
| _version_ | 1824454338544664576 |
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| author | Ding, Junfei Li, Haotian Ma, Haoxin Shi, Shengxian New, Tze How |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ding, Junfei Li, Haotian Ma, Haoxin Shi, Shengxian New, Tze How |
| author_sort | Ding, Junfei |
| collection | NTU |
| description | This paper presents a novel snapshot three-dimensional (3D) imaging technique for fast turbomachinery blade geometrical measurements. The proposed measurement system employs a microlens array based light-field camera to capture 3D blade geometry into one light-field image, from which 100 new perspective images can be generated and the blade 3D point cloud can be recovered through sophisticated light-field rendering algorithms. The measurement accuracy is determined to be approximately 35 μm by measuring a series of standard gauge blocks. Performance of the proposed technique is compared against a coordinate-measuring machine (CMM) and laser scanner by measuring a turbine blade. It reveals that the single light-field camera 3D measurement system can produce 820 000 data point in 30 s with an average measurement accuracy of 61.00 μm, which is considerably more efficient than the current CMM and laser scanning techniques. |
| first_indexed | 2025-02-19T03:20:44Z |
| format | Journal Article |
| id | ntu-10356/151477 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:20:44Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1514772021-06-16T08:49:01Z A novel light field imaging based 3D geometry measurement technique for turbomachinery blades Ding, Junfei Li, Haotian Ma, Haoxin Shi, Shengxian New, Tze How School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering 3D Geometrical Measurement Blades This paper presents a novel snapshot three-dimensional (3D) imaging technique for fast turbomachinery blade geometrical measurements. The proposed measurement system employs a microlens array based light-field camera to capture 3D blade geometry into one light-field image, from which 100 new perspective images can be generated and the blade 3D point cloud can be recovered through sophisticated light-field rendering algorithms. The measurement accuracy is determined to be approximately 35 μm by measuring a series of standard gauge blocks. Performance of the proposed technique is compared against a coordinate-measuring machine (CMM) and laser scanner by measuring a turbine blade. It reveals that the single light-field camera 3D measurement system can produce 820 000 data point in 30 s with an average measurement accuracy of 61.00 μm, which is considerably more efficient than the current CMM and laser scanning techniques. Financial support provided by National Natural Science Foundation of China (NSFC, 11772197) and VOMMA Optec Co Ltd are gratefully acknowledged. 2021-06-16T08:49:01Z 2021-06-16T08:49:01Z 2019 Journal Article Ding, J., Li, H., Ma, H., Shi, S. & New, T. H. (2019). A novel light field imaging based 3D geometry measurement technique for turbomachinery blades. Measurement Science and Technology, 30(11), 115901-. https://dx.doi.org/10.1088/1361-6501/ab310b 0957-0233 0000-0003-0048-4837 0000-0003-0703-2921 https://hdl.handle.net/10356/151477 10.1088/1361-6501/ab310b 2-s2.0-85072723232 11 30 115901 en Measurement Science and Technology © 2019 IOP Publishing Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering 3D Geometrical Measurement Blades Ding, Junfei Li, Haotian Ma, Haoxin Shi, Shengxian New, Tze How A novel light field imaging based 3D geometry measurement technique for turbomachinery blades |
| title | A novel light field imaging based 3D geometry measurement technique for turbomachinery blades |
| title_full | A novel light field imaging based 3D geometry measurement technique for turbomachinery blades |
| title_fullStr | A novel light field imaging based 3D geometry measurement technique for turbomachinery blades |
| title_full_unstemmed | A novel light field imaging based 3D geometry measurement technique for turbomachinery blades |
| title_short | A novel light field imaging based 3D geometry measurement technique for turbomachinery blades |
| title_sort | novel light field imaging based 3d geometry measurement technique for turbomachinery blades |
| topic | Engineering::Mechanical engineering 3D Geometrical Measurement Blades |
| url | https://hdl.handle.net/10356/151477 |
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