2020/03/26 by Mickaël Bourgoin, Bourgoin, Mickael, Sander G. Huisman +1 · 1 citation
Engineering · Environmental Science · #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows #Hydrology and Sediment Transport Processes #Particle Dynamics in Fluid Flows
paper · pdf · doi:10.48550/arxiv.2003.12135
openalex publication_date 2020/03/26 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
An innovative method based on the traversal of rays, originating from\ndetected particles, through a three-dimensional grid of voxels is presented.\nThe methodology has as main advantage that the outcome of the method is\nindependent of the order of the input; the order of the cameras and the order\nof the rays presented as input to the algorithm does not influence the outcome.\nThe algorithm finds matches in decreasing value of match quality, ensuring that\nglobally best matches are matched before worse matches. The time complexity of\nthe algorithm is found to scale efficiently with the number of cameras and\nparticles. A variety of show-cases are given to exemplify the algorithm for\ndifferent geometries and different number of cameras. The method is designed\nfor the tracking of tracer or inertial particles in fluid mechanics, for which\nthe particle size generally ranges from O(\μm)--O(cm). The method, however,\ndoes not impose a size limit on the particles.\n