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Updated: Apr 23, 2026

High-speed Particle Image Velocimetry Near Surfaces
Published on: June 24, 2013
Online computing of non-stationary distributions velocity fields by an accuracy controlled growing neural gas
1Supélec, 2, rue Édouard Belin, 57070 Metz, France; Georgia Tech Lorraine, UMI 2958, 2-3, rue Marconi, 57070 Metz, France.
Abstract:
This paper presents a vector quantization process that can be applied online to a stream of inputs. It enables to set up and maintain a dynamical representation of the current information in the stream as a topology preserving graph of prototypical values, as well as a velocity field. The algorithm relies on the formulation of the accuracy of the quantization process, that allows for both the updating of the number of prototypes according to the stream evolution and the stabilization of the representation from which velocities can be extracted. A video processing application is presented.
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