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• W3092021892 abstract "Particle Imaging Velocimetry (PIV) estimates the fluid flow by analyzing the motion of injected particles. The problem is challenging as the particles lie at different depths but have similar appearances. Tracking a large number of moving particles is particularly difficult due to the heavy occlusion. In this paper, we present a PIV solution that uses a compact lenslet-based light field camera to track dense particles floating in the fluid and reconstruct the 3D fluid flow. We exploit the focal symmetry property in the light field focal stacks for recovering the depths of similar-looking particles. We further develop a motion-constrained optical flow estimation algorithm by enforcing the local motion rigidity and the Navier-Stoke fluid constraint. Finally, the estimated particle motion trajectory is used to visualize the 3D fluid flow. Comprehensive experiments on both synthetic and real data show that using a compact light field camera, our technique can recover dense and accurate 3D fluid flow." @default.
• W3092021892 created "2020-10-15" @default.
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• W3092021892 date "2020-01-01" @default.
• W3092021892 modified "2023-09-28" @default.
• W3092021892 title "3D Fluid Flow Reconstruction Using Compact Light Field PIV" @default.
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• W3092021892 doi "https://doi.org/10.1007/978-3-030-58517-4_8" @default.
• W3092021892 hasPublicationYear "2020" @default.
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