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We present a technique for accelerating Smoothed Particle Hydrodynamics (SPH) by adaptively constructing and reusing particle pairing information. Based on a small calculation performed on each particle pair, we can determine whether or not pairing information needs to be recomputed at each simulation frame. We present simulations that show that for numbers of particles above 8,000, total simulation...
To date, it is still a challenge to develop a comprehensive simulation system which has the capabilities to serve as a Virtual Testbed. In this paper, we present an efficient system structure, based on a novel 3D simulation database approach, which has been designed according to testbed requirements collect from space robotics to virtual production requirements. The simulation framework VEROSIM®which...
A framework for interactive modeling of three dimensional caves is presented. It is based on a new spatial data structure that extends existing terrain rendering methods. The cave is represented as a set of slabs, each encoding a portion of the model along an axis. We describe methods for a user to modify this model locally and procedural methods for global alteration. We wish to allow cave modeling...
In this paper, we report a robust, efficient, and automatic method for matching infrared tracked markers for human motion analysis in computer-aided physical therapy applications. The challenges of this task stem from non-rigid marker motion, occlusion, and timing requirements. To overcome these difficulties, we use pair-wise distance constraints for marker identification. To meet the timing requirements,...
The paper discusses an innovative approach to acquire and learn deformable objects’ properties to allow the incorporation of soft objects in virtualized reality applications or the control of dexterous manipulators. Contours of deformable objects are tracked in a sequence of images collected from a camera and correlated to the interaction measurements gathered at the fingers of a robotic hand using...
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