Automatic Generation of Character Behavior by the Placement of Objects with Motion Data

Abstract

Recently, virtual space design with high quality three-dimensional CG has become possible due to a rapid improvement in computer performance. In order to give a CG character the movement of its own, it is necessary to apply the motion data to the character after getting them with a motion capture device or by hand work. Production costs have increased because this is complicated work for an animator. In general, the character movement depends on the objects which it holds. Our idea is that the character does not have motion data of its own, but we give the character motion to the objects that it holds. We have developed a method for automatically generating the character motion data by giving motion information to the objects. Thus, each object includes the motion data that cause the character to act. In addition, we give multiple motion data appropriate for the situations to the objects and define the relationship between objects in a virtual space. By using this relation, we can generate a variety of motion data according to the object which the character holds. The proposed method reduces the number of character motion data which should be prepared beforehand.