The proceedings contain 56 papers. The topics discussed include: a tool for visualizing the topology of three-dimensional vector fields;visualizing causal effects in 4D space-time vector fields;fast rotation of volume...
ISBN:
(纸本)0818622458
The proceedings contain 56 papers. The topics discussed include: a tool for visualizing the topology of three-dimensional vector fields;visualizing causal effects in 4D space-time vector fields;fast rotation of volume data on dataparallel architectures;computer assisted sphere packing in higher dimensions;the asymptotic decider: resolving the ambiguity in marching cubes;the virtual windtunnel: an environment for the exploration of three-dimensional unsteady flows;volume rendering of flow-visualization point data;visualization of equations in an interactive environment;spam filtering: an optimization scheme for volume visualization of large finite element models;two widely-different architectural approaches to computer image generation;scientific visualization from inside the metacomputer;acoustic imaging: the reconstruction of underwater objects;and achieving direct volume visualization with interactive semantic region selection.
An overview of some fundamental algorithms for visualizing multidimensional data sets is given. These techniques are applied to ongoing research problems in bulk wave piezoelectric resonators. A set of two-dimensonal ...
详细信息
An overview of some fundamental algorithms for visualizing multidimensional data sets is given. These techniques are applied to ongoing research problems in bulk wave piezoelectric resonators. A set of two-dimensonal routines is presented. For modeling a vibrating resonator using 3-D finite elements, a combination of slicing, isosurface contours, and volume visualization is used. These techniques are also applicable to layerwise plate theory. It is shown that using visualization tools can greatly enhance the process of scientific discovery and progress in this area of research.< >
A 3-D interpolation method is proposed as the preprocessing step for 3-D visualization to compensate the poor interslice resolution in 3-D medical imaging. The proposed method uses the surface information which is obt...
详细信息
A 3-D interpolation method is proposed as the preprocessing step for 3-D visualization to compensate the poor interslice resolution in 3-D medical imaging. The proposed method uses the surface information which is obtained at each voxel using local gradients. If the voxel to be interpolated is found on a surface or in its vicinity, interpolation is performed along the direction parallel to the surface; otherwise interpolation is done along the vertical z-direction. Since the method uses correlation information inherent in 3-D data effectively, it can provide the interpolated image which preserves the surface smoothness and also reduces the interpolation error near the surface. As experimental results, volume rendering and cut-view images of interpolated 3-D medical data are presented.< >
The authors describe an input/output architecture called Swift that addresses the problem of storing and retrieving very largedata objects from slow secondary storage at very high data rates. Swift addresses the prob...
详细信息
The authors describe an input/output architecture called Swift that addresses the problem of storing and retrieving very largedata objects from slow secondary storage at very high data rates. Swift addresses the problem of providing data rates required by digital video by exploiting the available interconnection capacity and by using several slower storage devices in parallel. Two studies have been performed to validate the Swift architecture: a simulation study and an Ethernet-based, proof-of-concept implementation. Both studies indicate that the aggregation principle proposed in Swift can yield very high data-rates.< >
The authors describe the design and implementation of an algorithm and a processor which can be used to accelerate computations in which large amounts of rotations (circular as well as hyperbolic) are involved. The pr...
详细信息
The authors describe the design and implementation of an algorithm and a processor which can be used to accelerate computations in which large amounts of rotations (circular as well as hyperbolic) are involved. The processor is a low-cost high-throughput VLSI implementation of the algorithm. With 10/sup 7/ rotations per second, many real-time and interaction-time applications in scientific computation become feasible. The required storage and/or silicon area is low and the execution time is independent of the particular operation performed. Another feature of this CORDIC design is its pipelined architecture and floating point extension. It is angle-pipelinable at the bit-level and has an execution time which is independent of any possible operation that can be executed.< >
A description is given of ideas and tools that help with the visualization of sparse matrix computations. The Sparse Matrix Manipulation System, an environment for handling sparse matrices of all types in a flexible m...
详细信息
A description is given of ideas and tools that help with the visualization of sparse matrix computations. The Sparse Matrix Manipulation System, an environment for handling sparse matrices of all types in a flexible manner via ASCII file interfaces, is used. Two commands in this environment are ShowMatrix and ShowTree. The first illustrates the pattern of nonzeroes of a sparse matrix. The second illustrates dependencies among matrix elements. Other tools in the package are described, including tools for ordering, factoring and multiplying sparse matrices. This software environment is then used to study the effect of several recent ordering and partitioning algorithms for working with the sparse inverses of L and U. These new algorithms have been proposed as a means of enhancing the parallelism of sparse matrix computations. The effect of these algorithms on parallelism and fill-in is illustrated in a graphic manner.< >
The authors explore the graphical representation of objects and processes as a means for understanding programs consisting of large numbers of concurrent processes. Their goal is to establish a technical foundation fo...
详细信息
The authors explore the graphical representation of objects and processes as a means for understanding programs consisting of large numbers of concurrent processes. Their goal is to establish a technical foundation for research into the monitoring and debugging of large-scale concurrent programs. They explain declarative visualization and introduce some shared-data-space concepts and notation by means of a simple, nondeterministic, parallel algorithm. They discuss visual abstraction and their visualization methodology, which they illustrate by applying it to region labeling. Thy examine the relaxation of nonintervention that visualization makes possible
A discussion is presented of the authors' view that a parallel supercomputing environment is necessary for today's largegraphics, modeling, and simulation applications. These applications are used by scientis...
详细信息
A discussion is presented of the authors' view that a parallel supercomputing environment is necessary for today's largegraphics, modeling, and simulation applications. These applications are used by scientists and engineers who make extreme demands on their computer resources. Such applications, accessed by a few key users, are typically critical to the success of a large operation. Such high-average applications point out where today's supercomputing environments need to be augmented. A summary is presented of some important hardware and software characteristics which these customers will require of tomorrow's superconducting environments.< >
暂无评论