High resolution volumetric light field particle image velocimetry with dual plenoptic cameras

Mei Di; Ding Junfei; Shi Shengxian

doi:10.11729/syltlx20180165

Volume 33 Issue 2

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Mei Di, Ding Junfei, Shi Shengxian. High resolution volumetric light field particle image velocimetry with dual plenoptic cameras[J]. Journal of Experiments in Fluid Mechanics, 2019, 33(2): 57-65. doi: 10.11729/syltlx20180165

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High resolution volumetric light field particle image velocimetry with dual plenoptic cameras

doi: 10.11729/syltlx20180165

Turbomachinary Research Institute, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received Date: 2018-11-14
Rev Recd Date: 2019-01-11
Publish Date: 2019-04-25

Abstract

Abstract

Light field particle image velocimetry (LF-PIV) was recently introduced to measure the three-dimension three-component (3D-3C) velocity field with just single camera. The main drawback of this configuration is the decreased measurement accuracy in the out-of-plane dimension due to limited spatial resolution. This work presents a solution with dual-camera arrangement to broaden the viewing angle. Based on multiplicative algebraic reconstruction technique (MART), a novel particle reconstruction algorithm is developed for dual or multiple light field camera PIV system. In addition, the synthetic images of DNS jet data and experimental images of a vortex-ring are utilized to draw a comparison between the velocity measurement results of a single light field camera and dual light field cameras. It is determined that the accuracy of dual-camera configuration in the depth direction has been significantly improved when compared to single light-field camera system.
- dual light field cameras,
- PIV,
- depth of field resolution,
- reconstruction algorithm,
- calibration

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References(30)

References

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