This approach gives full freedom to use both captured models and animation data, and models and animation data that are created or edited. The project will look at improving the quality of these models further. In addition, BT Labs are developing high-quality methods specifically for creating 3D head models. Motion capture is the process of measuring the motion of an actor to gather information on limb and facial movement, for use in animating a 3D model.
Current technology allows the motion of actors to be captured in several ways.
One method is to place reflective markers at appropriate points on the actor. An example of such a system is that produced by Vicon . Another method is to use magnetic sensors, for example as produced by Polhemus . Both these approaches can generate animation data in real-time, but they require the placement of markers or transceivers on the actor. Furthermore, any conventional video shot at the same time will show the actor covered in markers or sensors, making it impossible to use the video as a 'live' texture map to apply to a 3D model, or to shoot a conventional TV programme in parallel with a 3D programme.