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Journal of Zhejiang University SCIENCE A 2001 Vol.2 No.1 P.46~50

http://doi.org/10.1631/jzus.2001.0046


A MODEL BASED ALGORITHM FOR FAST DPIV COMPUTING


Author(s):  CHEN Tian-ding, LI Hong-dong, LIU Ji-lin, GU Wei-kang

Affiliation(s):  Department of Information and Electronics Engineering,Zhejiang University,Hangzhou 310027,China

Corresponding email(s): 

Key Words:  IAFM, flow visualization, optical flow, computer vision, DPIV


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CHEN Tian-ding, LI Hong-dong, LIU Ji-lin, GU Wei-kang. A MODEL BASED ALGORITHM FOR FAST DPIV COMPUTING[J]. Journal of Zhejiang University Science A, 2001, 2(1): 46~50.

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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.

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