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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2001, Vol. 2 Issue (1): 46-50    DOI: 10.1631/jzus.2001.0046
Science & Engineering     
A MODEL BASED ALGORITHM FOR FAST DPIV COMPUTING
CHEN Tian-ding, LI Hong-dong, LIU Ji-lin, GU Wei-kang
Department of Information and Electronics Engineering,Zhejiang University,Hangzhou 310027,China
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Abstract  Traditional DPIV (Digital Particle Image Velocimetry) methods are mostly based on area-correlation (Willert,C.E.,1991). Though proven to be very time-consuming and very much error prone, they are widely adopted because of they are conceptually simple and easily implemented, and also because there are few alternatives. This paper proposes a non-correlation, conceptually new, fast and efficient approach for DPIV, which takes the nature of flow into consideration. An Incompressible Affined Flow Model (IAFM) is introduced to describe a flow that incorporates rational restraints into the computation. This IAFM, combined with a modified optical flow method-named Total Optical Flow Computation (TOFC), provides a linear system solution to DPIV. Experimental results on real images showed our method to be a very promising approach for DPIV.

Key words： IAFM,flow visualization,optical flow,computer vision,DPIV     
Received: 28 December 1999     
CLC:  TN911.73  
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LI Hong-dong
CHEN Tian-ding
LIU Ji-lin
GU Wei-kang
Cite this article:

CHEN Tian-ding, LI Hong-dong, LIU Ji-lin, GU Wei-kang. A MODEL BASED ALGORITHM FOR FAST DPIV COMPUTING. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2001, 2(1): 46-50.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2001.0046     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2001/V2/I1/46

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