Patent ID: 7830384
Filing Date: 2010-11-09
Classification: G06T

Abstract:
1. A method for driving a graphical object in computer-generated material in film, television and computer games based on a performance of an actor in an actual performance video stream, the method comprising: a. selecting a plurality of key calibration frames in a calibration video stream to serve as a basis set of frames specific to the actor and the graphical object; b. defining animation control values, in accordance with artistic intent, for each of a set of control variables, corresponding to each of the key calibration frames; c. parameterizing features of the actor in the calibration video stream so as to obtain a vector of values of parameters for each frame of the calibration video stream; d. deriving, for each key calibration frame, a vector containing a distance to all of the key calibration frames; e. for each frame in the video stream, deriving a vector containing, as elements, distances to all of the basis set of key calibration frames; f. mapping the space of distance vectors into the set of control variables according to a mapping operation; g. applying the mapping operation to distance vectors derived from the actual performance video stream to obtain a time sequence of animation control values; and h. creating the graphical object embodying a particular visual depiction of the actor based on applying the sequence of animation control values to the graphical object.