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A new numerical approach for modeling a class of flow–structure interaction problems typically encountered in biological systems is presented. In this approach, a previously developed, sharp-interface, immersed-boundary method for incom-pressible flows is used to model the fluid flow and a new, sharp-interface Cartesian grid, immersed-boundary method is(More)
The theoretical background and implementation for a computer animation system to model a general class of three dimensional dynamic processes for arbitrary rigid bodies is presented. The simulation of the dynamic interaction among rigid bodies takes into account various physical characteristics such as elasticity, friction, mass, and moment of inertia to(More)
SUMMARY This paper presents a new image morphing method using a two-dimensional deformation technique which provides an intuitive model for a warp. The deformation technique derives a C 1-continuous and one-to-one warp from a set of point pairs overlaid on two images. The resulting inbetween image precisely reflects the correspondence of features specified(More)
We present a general methodology to produce synchronized soundtracks for animations. A sound world is modeled by associating a characteristic sound for each object in a scene. These sounds can be generated from a behavioral or physically-based simulation. Collision sounds can be computed from vibrational response of elastic bodies to the collision impulse.(More)
This paper presents a new image morphing technique using deformable surfaces. Drawbacks of previous techniques are overcome by a physically-based approach which provides an intuitive model for a warp. A warp is derived by two deformable surfaces which specify horizontal and vertical displacements of points on an image. This paper also considers the control(More)
In this paper, we describe a novel method to automatically generate synchronized dance motion that is perceptually matched to a given musical piece. The proposed method extracts 30 musical features from musical data as well as 37 motion features from motion data. A matching process is then performed between the two feature spaces considering the(More)
Physicians are accustomed to using volumetric datasets for medical assessment, diagnosis and treatment. These modalities can be displayed with 3D computer visualizations for physicians to study the overall shape and internal anatomical structures. Gesture-based interfaces can be beneficial to interact with these kinds of visualizations in a variety of(More)
This paper reports empirical results from a study into the useof 2D widgets in 3D immersive virtual environments. Severalresearchers have proposed the use of 2D interaction techniques in3D environments, however little empirical work has been done totest the usability of such approaches. We present the results oftwo experiments conducted on low-level 2D(More)