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Existing volume visualization techniques are rvpically applied to a three-dimensional grid. This presents some challenging problems in the visualization of environmental a!ata, These &ta often consist of unevenly distributed samples. Typically a two-step approach is used to visualize environmental &a. First the unevenly distributed sample data are modeled(More)
When dealing with randomly located or clustered data, interpolation error will vary as the distance to the nearest sample or cluster of samples. The current predominant methods for interpolating non-uniform data are not guaranteed to handle this variability of error well. The non-uniformity of the error surface can easily lead to gross misinterpretations of(More)
This paper presents the ASVC (Acquisition, Simulation, Visualization and Controller) framework for integrating heterogeneous virtual surgery modules. The framework extends the well-known MVC (Model-View-Controller) system architecture to make virtual surgery systems flexible and efficient. The framework can be used to construct stand-alone or server-client(More)
Virtual Reality (VR) and associated technologies are experiencing growing importance in medicine and surgery. VR demands fast and real time simulations. Finite element analysis can be used for cutting simulation; however, finite element analysis is computationally intensive and is unsuitable for real time applications involving cutting of a large amount of(More)
This paper presents a framework for collaborative 3D computer-aided design over the Internet. The framework separates the static and dynamic properties of the design objects and symbolically represents the static properties. By only transmitting the changing dynamic properties over the network, this SD3DCAD (Symbolic Distributed 3D CAD) framework(More)
Date iii ABSTRACT This thesis addresses the issue of determining the iteration bound for a synchronous data flow graph (SDFG) and determining whether or not a SDFG is live. The main result of this work is an iteration bound equation for finding an integral static schedule for a SDFG, in which a node is issued at the beginning of a clock cycle. We show that(More)
This short paper describes an ongoing NSF-funded project on enhancing science and engineering education using the latest technology. More specifically, the project aims at developing an interactive learning system with Microsoft Kinect TM and Unity3D game engine. This system promotes active, rather than passive, learning by employing embodied cognition with(More)
Motion deblurring is a knotty problem, especially when the photo is shot in a low lighting scene with a long exposure time or a strong reflected lighting scene. In this situation, partially saturated pixels violate the assumption of linear model and the recovered image contains severe ringing artifacts. In this paper, we proposed a novel two-layer images(More)