Marker-less Motion Tracking

The use of markers to track body kinmeatics is not without problems:
  • Identification of standard bony landmarks can be unreliable
  • The soft tissue overlying the bony landmarks can move, giving rise to noisy data
  • The marker itself can wobble due to its own inertia
  • Markers can even come adrift completely
  • Children are often irritated by the markers and pull them off

  • Several attempts have been made in recent years to track body segments without markers:

  • UK group (David Hogg & Tony Heap)
  • Caltech group (Goncalves, Bernardo, Perona)
  • Maryland group (Gavrilla & Davis)
  • MIT group (Ali Azabayajarni)
  • Japanese group (Masaaki Mochimaru)
  • Vienna group (Chris Kirtley, Arnold Baca & Prof. Herbert Hatze)
  • Visual Computing Lab, U of Houston (Kakadiaris)
  • Stanford Movement (Christoph Bregler et al) - pdf paper here

  • Some of these applications relate to the use of hand motion as a computer input device, while some are for virtual reality purposes. So far there have been relatively few applications of the technology to biomechanics.

    Know of any more? Please email me!