FLUID

Workpackage-3 : 2D fluid motion analysis

Description

2D fluid motion analysis. The objective of this workpackage is to design higher level tools for fluid motion analysis. The aim is here to develop methods allowing us to detect, characterize, and track particular structures in the processed image sequence. The considered approach will mainly rely on parametric description of the velocity field. The extracted motion descriptors will also serve as basis models for the techniques developed in workpackage 4.

Some demonstrations of realized tasks

1. TEMPORAL TRACKING / NON LINEAR FILTERING, A. Cuzol, E.Memin
   Definition of a non linear filtering method for the temporal tracking of fluid motion velocity fields. The filter combines a stochastic formulation of the 2D Navier-Stokes equation with observations given by the image sequence. (DEMO HERE)
   
2. VARIATIONAL FORMULATION FOR OPTICAL FLOW, Álvarez L., Castaño C., García M., Krissian K., Mazorra L., Salgado A., Sánchez J.
   We propose a new symmetric variational formulation of the optical flow problem, where the flow is naturally symmetric. Results on the Yosemite sequence show an improved accuracy of our symmetric flow with respect to standard optical flow algorithm. (DEMO HERE)
   
3. OBJECT AND MOTION TRACKING. N. Papadakis, E. Memin
   Proposition of a variational method dedicated to the spatio-temporal tracking of closed curves and motion fields. (DEMO HERE)
   
4. PROPER ORTHOGONAL DECOMPOSITION,J. D'adamo, N. Papadakis, E. Memin, G. Artana
   Estimation of the temporal modes through a variational approach. (DEMO HERE)
   

Involved partners

• INRIA
• Mannheim Univ.
• ULPGC
• CEMAGREF
• LMD-CNRS