Abstract
In computer graphics, lighting designs attempt to achieve desired visual goals and assist viewers to appreciate the synthesized images better. As most existing automatic lighting designs are mainly for static targets, in this paper we present a novel automatic lighting method for motion data. We divide our lighting design into “global lighting” for scenes and “local lighting” for characters. For global lighting, we propose a viewpoint entropy algorithm to determine its lighting parameters according to the acting area of the motion data. Then we show that the best placement of each local light could be obtained by solving the corresponding optimization problem. Note that key frames can be identified by observations of root’s trajectory of motion data. Finally, by appropriate interpolations of lighting parameters of each key frame, the goal of the lighting design for motion data could be achieved. Several examples are given to demonstrate the effectiveness of the proposed method.