MEchanics GAthering -MEGA- Seminar: Affordable, efficient and fast motion tracking in experimental mechanics and robotics with event-based camera.


Event details

Date 29.02.2024
Hour 16:1517:30
Speaker Gaétan Raynaud (UNFoLD, EPFL)
Location Online
Category Conferences - Seminars
Event Language English
Many phenomena in experimental mechanics and robotics are fast: the flapping of membranes, propulsion of micro-aerial vehicles, crack propagation, dynamic buckling have typical time scales around microseconds and milliseconds.
Fast cameras usually record frames at a high constant framerate, generating a lot of redundant information when nothing is moving. They also require strong illumination and are cost-prohibitive.
Event-based cameras feature a different sensor that records only variations in light intensity, ignoring all the static information. They are much lighter, affordable and track motions at the microsecond timescale. However the data that they output have a very different structure than frame-based cameras.
We present a general method to reconstruct the deformation of a flapping flag in a wind tunnel using an event-based camera. Then, an open-discussion session aims at sharing experiences: you are warmly welcome to bring ideas, suggestions and questions, especially if you consider using or have used event-based techniques in your experiments
Gaétan is a PhD student at EPFL. He joined the UNFoLD lab of Prof. Karen Mulleners in October 2021. His research focuses on the effect of shape on the flapping of flags. Before joining EPFL, Gaétan got an engineering degree from École polytechnique in France and a research-based master from Polytechnique Montréal in Québec, Canada.

Practical information

  • General public
  • Free


  • MEGA.Seminar Organizing Committee 


Fast imaging event-based cameras experimental methods tracking