News 3D-PTV Algorithms Based on Correlation Between Binary Images

Two new algorithms of three-dimensional binary correlation method (BCM) are proposed for particle tracking velocimetry. The principal part of the method is an algorithm to evaluate a similarity between two local patterns of distributed particles in a three-dimensional space. Introducing a function, which represents a degree of closeness of two particles, the similarity with a reduced consumption of computer resources. Another method compares distributions on a two-dimensional plane by tranforming the coordinates of original patterns. The performances of the methods are examined by computer simulations.