Character motion control interface with hand manipulation inspired by puppet mechanism
Proceedings of the 12th ACM SIGGRAPH International Conference on Virtual-Reality Continuum and Its Applications in Industry
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In this paper, we propose a new method for interactive motion control with a multi-touch interface. A user of our system can touch and drag character's body parts to control its motion. The character's full body motion is driven by our interactive motion control model based on the movement of a few body parts which are directly manipulated by the user via the multi-touch interface. We propose a method for determining 3-dimensional positions of controlled body parts from 2-dimensional touch inputs based on the character's local coordinates and drag speed. We introduce a point-based pose representation which consists of the positions or orientations of a small number of primary body parts. Based on the representation, we develop a motion control model that includes modules for tracking, balance, inter-body interaction, relaxing and self-collision avoidance. The character's pose is reconstructed from the point-based pose representation. We present our experimental results to show that our framework can realize various natural-looking motions.