Abstract
Three-dimensional flow visualized target was reconstructed and approximated in the form of polyhedral expression of a solid model. This modeling is based on the viewing cone intersection principle using multiple video images of the target. In this report, a tuft, polystyrene particle and candle flame in the flow were reconstructed. Curved shape of the tuft due to rigidity of the adhesives and spread shape of the free end due to whipping or fluttering motion were detected by these modeling. Tuft direction was detected by skeletonizing with successive centroids calculation. Particle velocity and acceleration were detected by its gravity center calculation. Flame front fluctuation in a light draft was detected. From these applications, it seems that this method will contribute in the wide realm of three-dimensional flow measurement.
