FLUID

Workpackage-4 : 3D fluid motion estimation

Description

3D fluid motion estimation. This workpackage addresses a very challenging topic: the computation of 3D motion information for fluid flows. Two different issues will be investigated: the estimation of 3D velocity of particles in a light sheet plane, and the estimation of several interacting 2D velocity fields organized as successive motion layers corresponding to different depth or altitudes. The first case is mainly relevant to experimental visualization of fluid flows whereas the second one is well suited to atmospheric 3D-like flow description from meteorological satellite image sequences.

Some demonstrations of realized tasks

1. 3D ATMOSPHERIC CLOUD STRUCTURES : Processing and Visualization, Alvarez L., Castaño C., García M., Krissian K., Mazorra L., Salgado A., Sánchez J.
   This video presents an application of computer vision techniques to the visualization and processing of 3D atmospheric cloud structures. We developed a free software, based on OpenGL library, to visualize in 3D the cloud motion and the results from filtering and optical flow techniques. This video has been accepted at the international conference CVPR 2006. (DEMO HERE)
   
2. A VARIATIONAL APPROACH FOR 3D MOTION ESTIMATION OF INCOMPRESSIBLE PIV FLOWS, L. Alvarez, C. Castaño, M. García, K. Krissian, L. Mazorra, A. Salgado, and J. Sánchez
   Motion estimation technique for 3D PIV image sequences of moving particles. It improves the accuracy of other standard techniques using them as initialization. (DEMO HERE)
   
3. 3D TOMOGRAPHIC PIV RESULTS, Bernhard Wieneke, Dirk Michaelis, Uwe Dierksheide, Karsten Pfeiffer
   (DEMO HERE)
   
   
4. 3D LAYERED ATMOSPHERIC MOTION ESTIMATION, P. Héas, E. Mémin
   Optical flow methods for 3D motion estimation of atmospheric layers. (DEMO HERE)
   
   
   

Involved partners

• ULPGC
• INRIA
• CEMAGREF
• La Vision
• LMD-CNRS