Motion capture database


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What is motion capture?

Motion capture is often used to denote only large and expensive systems, but very generally it can be used to describe any system that measures movement of any kind. This includes (but is not limited to):

  • Optical (camera-based) systems: with and without markers, visual/infrared light
  • Electromagnetic systems
  • Inertial systems: accelerometers, gyroscopes, magnetometeres, etc.
  • Mechanical systems: flexion sensors, etc.
  • ...

See Wikipedia for more descriptions of such systems.

Why a database?

  • Share data: It takes lots of money/time/effort to make mocap recordings, and the data is very seldom used as much as it could have been
  • Share analyses: It would be good to create some kind of benchmark so that it is possible to compare different analytical approaches between researchers
  • Work on a common conceptual platform
  • Showcase to the world
  • Use for artistic/creative applications


Which features are we interested in?


  • kinematic features
  • kinetic features

What marker placement to use?

Perceptual motion descriptors

  • quantity of motion

Sound descriptors

  • MPEG-7 descriptors

Action/sound features

Which features are based on the combination of action and sound?


What databases do already exist? How are they organised? What type of formatting is used?

Other material:

Things to think about

  • Reference capture
  • long/short
  • Many repetitions of same material
  • Meta-categories
  • MoCap thumbnails
  • Categorization
  • Morphing between action
  • Connection to sound databases/standards
  • What to include?
    • data
    • audio?
    • video?
    • motion image video?
    • motiongram?
    • animation (stick figure)?
  • What license to use? Multiple licenses?
  • Check with experiences of researchers in ethnomusicology
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