The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
Fluid flow and optical flow
Abstract
The connection between fluid flow and optical flow is explored in typical flow visualizations to provide a rational foundation for application of the optical flow method to image-based fluid velocity measurements. The projected-motion equations are derived, and the physics-based optical flow equation is given. In general, the optical flow is proportional to the path-averaged velocity of fluid or particles weighted with a relevant field quantity. The variational formulation and the corresponding Euler–Lagrange equation are given for optical flow computation. An error analysis for optical flow computation is provided, which is quantitatively examined by simulations on synthetic grid images. Direct comparisons between the optical flow method and the correlation-based method are made in simulations on synthetic particle images and experiments in a strongly excited turbulent jet.
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Particle Image Velocimetry: A Practical Guide
Raffel, M., Willert, C. E., Scarano, F., Kähler, C. J., Wereley, S. T., & Kompenhans, J. (2018) · doi:10.1007/978-3-319-68852-7 · Cited by 5,049
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Performance of optical flow techniques
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Particle-Imaging Techniques for Experimental Fluid Mechanics
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Fundamentals of Multiphase Flow
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Cited by
Riethmuller, M., David, L., & Lecordier, B. (2012) · Laser Velocimetry in Fluid Mechanics · doi:10.1002/9781118569610.ch6 · Cited by 516
Optical flow modeling and computation: A survey
Fortun, D., Bouthemy, P., & Kervrann, C. (2015) · Computer Vision and Image Understanding · doi:10.1016/j.cviu.2015.02.008 · Cited by 431
Metadata
- Authors
- LIU, T., & SHEN, L.
- Venue
- Journal of Fluid Mechanics
- Publisher
- Cambridge University Press (CUP)
- Published
- 2008-10-16
- Volume
- 614
- Pages
- 253-291
- ISSN
- 0022-1120 (ISSN-L)
- 1469-7645
- OpenAlex
- W1964443992
- Cited by
- 335
- References
- 31
- FWCI
- 7.00
- Type
- journal article
- Language
- en
- Open access
- closed
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