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1995 Fiscal Year Final Research Report Summary

Development of Real Time Measuring Technique for Particulate Objects in Multi-Phase Flows Utilizing Image Analysis

Research Project

Project/Area Number 06650223
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionKANSAI UNIVERSITY

Principal Investigator

UEMURA Tomomasa  Kansai University Department of Industrial Engineering, Professor, 工学部, 教授 (70029536)

Project Period (FY) 1994 – 1995
KeywordsImage Analysis / PTV / PIV / Binary Image Correlation / Particle Velocimetry / High Density Ditribution
Research Abstract

This project aims to measure number and velocities of particulate objects such as a particles and tiny bubbles which are moving in crowded condition. For the purpose, the techniques of particle tracking velocimetry is most adequate, since the method can measure velocities of individual particles. But, existing algorithms of the method are commonly weak in the dense distribution of particles. In the present study, main effort is paid to develop a improved PTV method from the binary image correlation method which is effective for densely distributed particles.
The method stands on pursuing a resemblance between clusters of particles calculating a special correlation coefficient which are optimized for binary data. The binary image correlation method can find particle to particle correspondences between two successive pictures in a very short time, then each particle trajectory can traced by analyzing sequential pictures.
While continuously pursuing trajectories of moving particles, those particle can be identified. And even if some particles are obesrved as one particle in some pictures, they could be separated in different moment and pictures.
Along with the above mentioned concept, an analyzing software is developed, and it is confirmed that the new analyzing system works far better than the former system for a condition of densely distributed particles. But, it still remains some issues of improvement such as faster analysis, reducing erroneous measurements and accumulating more experimental examples for stronger performance. In the future study, we are going to apply gray level analysis of the pictures to distinguish individual particle consisting large clusters.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Tomomasa Uemura: "PTV Measurement on a Rotating System Using Semiconductor Laser and CCD Camera" Proc. International Symposium for Application of Laser to Fluid Mechanics-7. Paper No. 22. 3 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomomasa Uemura: "High Speed Algorithm for Digital PIV Analysis of Multiple-Exposure Pictures" Proc. of the Third Asian Symposium on Visualization. 657-662 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomomasa Uemura: "Digital Image Analysis for the Incoherent Medium Density PIV" Journal of Flow Visualization and Image Processing. vol. 2-1. 83-92 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomomasa Uemura: "Application of Binary Image Correlation Algorithm to PIV Analysis" Proc. Joint ASME/JSME Fluids Engineering Conference,. FED209. 37-42 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomomasa Uemura: "An Efficient calculation technique for PTV and PIV" Seventh International Symposium for Flow Visualization. 641-646 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Uemura, K.Fujimura, H.J.Sung, J.M.Hyun, H.Koyama: "PTV Measurement on a Rotating System Using Semiconductor Laser and CCD Camera" International Symposium for Application of Laser to Fluid Mechanics-7. Paper No.22.3. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Uemura, M.Iguchi, Z.Morita, M.Yoshikawa: "High Speed Algorithm for Digital PIV Analysis of Multiple-Exposure Pictures" Proc.of the Third Asian Symposium on Visualization. 1994-5, Chiba. 657-662

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Uemura, M.Iguchi, Z.Morita: "Digital Image Analysis for the Incoherent Medium Density PIV" Journal of Flow Visualization and Image Processing. vol.2-1. 83-92 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Uemura, M.Iguchi, M.Yoshikawa: "Application of Binary Image Correlation Algorithm to PIV Analysis" proc.ASME/JSME Fluids Engineering Conference. FED-209. 37-42 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Uemura, M.Iguchi, M.Yoshimoto, and M.Tatumi: "An Efficient calculation technique for PTV and PIV" Seventh International Symposium for Flow Visualization. 641-646 (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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