A detailed comparison of single-camera light-field PIV and tomographic PIV
This paper conducts a comprehensive study between the single-camera light-field particle image velocimetry (LF-PIV) and the multi-camera tomographic particle image velocimetry (Tomo-PIV). Simulation studies were first performed using synthetic light-field and tomographic particle images, which exten...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/88951 http://hdl.handle.net/10220/48341 |
| _version_ | 1826123874267299840 |
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| author | Shi, Shengxian Ding, Junfei Atkinson, Callum Soria, Julio New, Tze How |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Shi, Shengxian Ding, Junfei Atkinson, Callum Soria, Julio New, Tze How |
| author_sort | Shi, Shengxian |
| collection | NTU |
| description | This paper conducts a comprehensive study between the single-camera light-field particle image velocimetry (LF-PIV) and the multi-camera tomographic particle image velocimetry (Tomo-PIV). Simulation studies were first performed using synthetic light-field and tomographic particle images, which extensively examine the difference between these two techniques by varying key parameters such as pixel to microlens ratio (PMR), light-field camera Tomo-camera pixel ratio (LTPR), particle seeding density and tomographic camera number. Simulation results indicate that the single LF-PIV can achieve accuracy consistent with that of multi-camera Tomo-PIV, but requires the use of overall greater number of pixels. Experimental studies were then conducted by simultaneously measuring low-speed jet flow with single-camera LF-PIV and four-camera Tomo-PIV systems. Experiments confirm that given a sufficiently high pixel resolution, a single-camera LF-PIV system can indeed deliver volumetric velocity field measurements for an equivalent field of view with a spatial resolution commensurate with those of multi-camera Tomo-PIV system, enabling accurate 3D measurements in applications where optical access is limited. |
| first_indexed | 2024-10-01T06:11:27Z |
| format | Journal Article |
| id | ntu-10356/88951 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:11:27Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/889512023-03-04T17:14:49Z A detailed comparison of single-camera light-field PIV and tomographic PIV Shi, Shengxian Ding, Junfei Atkinson, Callum Soria, Julio New, Tze How School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Light-field Camera Light-field Particle Image Velocimetry This paper conducts a comprehensive study between the single-camera light-field particle image velocimetry (LF-PIV) and the multi-camera tomographic particle image velocimetry (Tomo-PIV). Simulation studies were first performed using synthetic light-field and tomographic particle images, which extensively examine the difference between these two techniques by varying key parameters such as pixel to microlens ratio (PMR), light-field camera Tomo-camera pixel ratio (LTPR), particle seeding density and tomographic camera number. Simulation results indicate that the single LF-PIV can achieve accuracy consistent with that of multi-camera Tomo-PIV, but requires the use of overall greater number of pixels. Experimental studies were then conducted by simultaneously measuring low-speed jet flow with single-camera LF-PIV and four-camera Tomo-PIV systems. Experiments confirm that given a sufficiently high pixel resolution, a single-camera LF-PIV system can indeed deliver volumetric velocity field measurements for an equivalent field of view with a spatial resolution commensurate with those of multi-camera Tomo-PIV system, enabling accurate 3D measurements in applications where optical access is limited. MOE (Min. of Education, S’pore) Accepted version 2019-05-23T05:56:15Z 2019-12-06T17:14:27Z 2019-05-23T05:56:15Z 2019-12-06T17:14:27Z 2018 Journal Article Shi, S., Ding, J., Atkinson, C., Soria, J., & New, T. H. (2018). A detailed comparison of single-camera light-field PIV and tomographic PIV. Experiments in Fluids, 59(3), 46-. doi:10.1007/s00348-018-2500-9 0723-4864 https://hdl.handle.net/10356/88951 http://hdl.handle.net/10220/48341 10.1007/s00348-018-2500-9 en Experiments in Fluids © 2018 Springer-Verlag GmbH Germany, part of Springer Nature. All rights reserved. This paper was published in Experiments in Fluids and is made available with permission of Springer-Verlag GmbH Germany, part of Springer Nature. 30 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering Light-field Camera Light-field Particle Image Velocimetry Shi, Shengxian Ding, Junfei Atkinson, Callum Soria, Julio New, Tze How A detailed comparison of single-camera light-field PIV and tomographic PIV |
| title | A detailed comparison of single-camera light-field PIV and tomographic PIV |
| title_full | A detailed comparison of single-camera light-field PIV and tomographic PIV |
| title_fullStr | A detailed comparison of single-camera light-field PIV and tomographic PIV |
| title_full_unstemmed | A detailed comparison of single-camera light-field PIV and tomographic PIV |
| title_short | A detailed comparison of single-camera light-field PIV and tomographic PIV |
| title_sort | detailed comparison of single camera light field piv and tomographic piv |
| topic | DRNTU::Engineering::Mechanical engineering Light-field Camera Light-field Particle Image Velocimetry |
| url | https://hdl.handle.net/10356/88951 http://hdl.handle.net/10220/48341 |
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