WRITTEN COMPONENT ENTRY Markerless Mocap notes.
Typically motion tracking requires highly visible markers and using the camera to track them. Never the less there is a bracket of inaccuracy which must be accounted for through corrections done by the hand of the animator.
Christian Theoballt (Stanford University) has commented that this inaccuracy adds a lot to the cost of production. He and colleagues at Standford and the Max-Planck Institute Informatik (Germany) claim to have developed software accurate enough to capture the full 3D movement of a person’s body without markers.
Video: http://www.youtube.com/watch?v=dTisU4dibSc&feature =player_embedded
This method begins with the creation of a 3D digital clone (using a laser scanner), 8 cameras capture the actor’s movements. The software compares the relative positions of features on the 8 original images to calculate details such as creases in clothing. Apparently the method is not confused by loose fitting clothing so actors may wear anything. With improvements the technique may be used to capture facial expressions.
Article dated: 29 May 2008
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