Abstract.
Traditional digital particle image velocimetry (DPIV) methods are previously based on area-correlation. Though proven to be very time-consuming and error prone, it has been widely adopted because it is conceptually simple, and easy to implement, and also because there are few alternatives. This paper provides a non-correlative, conceptually new, fast and efficient approach for DPIV which takes the nature of flow into consideration. An incompressible affine flow model (IAFM) is introduced to describe a flow that incorporates rational constraint directly into the computation. This IAFM, combining with a modified optical flow method – named total optical flow computation, provides a linear system solution to DPIV. Experimental results on real images demonstrate our method to be a very promising approach for DPIV.
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Received: 23 March 1998 / Accepted: 1 September 1999
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Li, H., Liu, J. & Gu, W. A new and fast approach for DPIV using an incompressible affine flow model. Machine Vision and Applications 11, 252–256 (2000). https://doi.org/10.1007/s001380050108
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DOI: https://doi.org/10.1007/s001380050108