A sparse optical flow inspired method for 3D velocimetry

• Published in: Experiments in fluids Vol. 64; no. 4
• Main Authors: Lu, George, Steinberg, Adam, Yano, Masayuki
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2023; Springer Nature B.V
• Subjects: Difference equations; Direct numerical simulation; Displacement; Engineering; Engineering Fluid Dynamics; Engineering Thermodynamics; Fluid- and Aerodynamics; Freezing; Heat and Mass Transfer; Image reconstruction; Isotropic turbulence; Kernel functions; Optical flow (image analysis); Optimization; Performance evaluation; Reacting flow; Representations; Research Article; Robustness (mathematics); Spatial resolution; Three dimensional flow; Velocimetry

We introduce a three-dimensional three-component particle-based velocimetry method that expands the methodology of optical flow to three dimensions. The proposed scheme, sparse particle flow velocimetry (SPFV), uses a sparse representation of intensity fields with kernel functions to facilitate effi...