Figure 1: Our unified geometric skinning method for rigid and deformable bodies with two-way force coupling (left), is well suited for anatomical models that have a mix of hard and soft tissues, such as dynamic simulations of the tongue, jaw, skull, and vocal tract (right). AbstractWe propose a novel geometric skinning approach that unifies geometric blending for rigid-body models with embedded surfaces for finite-element models. The resulting skinning method provides flexibility for modelers and animators to select the desired dynamic degrees-of-freedom through a combination of coupled rigid and deformable structures connected to a single skin mesh that is influenced by all dynamic components. The approach is particularly useful for anatomical models that include a mix of hard structures (bones) and soft tissues (muscles, tendons). We demonstrate our skinning method for an upper airway model and create first-of-itskind simulations of swallowing and speech acoustics that are generated by muscle-driven biomechanical models of the oral anatomy.

Abstract. We capture key factors of a group meal with communication and interface technologies to make a meal more enjoyable for diners who cannot be collocated. We determined three factors of a popular group meal, Chinese hotpot, that are essential for a group meal experience: interacting as a group with food, a central shared hotpot, and a feeling that others are nearby. We developed a prototype system to maintain these factors for an online meal with remote friends. Our technique is of interest to designers creating technology for isolated diners.

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