Accession Number : ADP009026

Title :   A Novel Three-Dimensional PTV Algorithm Composed by Efficient Space and Timewise Particle Identification,

Corporate Author : OSAKA UNIV (JAPAN)

Personal Author(s) : Uemura, T. ; Yamamoto, F. ; Iguchi, M.

Report Date : 23 JUL 1992

Pagination or Media Count : 5

Abstract : A new efficient algorithm consisting of a stereo-pair matching and a particle-tracking is developed for three-dimensional particle tracking velocimetry. In the former procedure, three-dimensional coordinates of particles can be determined efficiently by identifying particles between pictures taken simultaneously from multiple directions. The latter one is a three-dimensional binary correlation method, which can identify particles between two sequential pictures by evaluating similarity between two local patterns of three-dimensionally distributed particles. Performances of the new method such as the measurement accuracy of coordinates of particles, the reliability of estimated particle-pairs, and the analyzing speed are examined. (Author)

Descriptors :   *COMPUTER GRAPHICS, *OPTICAL TRACKING, *FLOW VISUALIZATION, ALGORITHMS, PATTERN RECOGNITION, IMAGE PROCESSING, SEQUENTIAL PHOTOGRAPHY, THREE DIMENSIONAL FLOW, COMPUTERIZED SIMULATION, ACCURACY, VELOCIMETERS, FOREIGN TECHNOLOGY, JAPAN, OPTICAL IMAGES, MATCHING, HIGH SPEED CAMERAS, EXPERIMENTAL DATA.

Subject Categories : Optical Detection and Detectors
      Computer Programming and Software
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE