A New Canonical Model of Virtual Human Head

In this paper, a new canonical model of virtual human head is presented. By using a uniform two-step refinement operator, the canonical model has a natural multiresolution structure. In the coarsest level, the canonical model is represented by a control mesh M⁰ which serves as the anatomical structure of the head. To achieve fine geometric details over M⁰, a multi-level detail set is assigned to the corresponding control vertices in M⁰, with the aid of a uniquely defined local frame field. Compared to the previously work, the proposed canonical model not only captures the physical characteristics of the head, but also is optimal in the geometric sense. Diverse examples are presented, showing that the deformed model is smooth and the presented canonical model is easy to use.