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Content Provider | IEEE Xplore Digital Library |
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Author | Nelson, B. Haimes, R. Kirby, R.M. |
Copyright Year | 1995 |
Abstract | We present a GPU-based ray-tracing system for the accurate and interactive visualization of cut-surfaces through 3D simulations of physical processes created from spectral/hp high-order finite element methods. When used by the numerical analyst to debug the solver, the ability for the imagery to precisely reflect the data is critical. In practice, the investigator interactively selects from a palette of visualization tools to construct a scene that can answer a query of the data. This is effective as long as the implicit contract of image quality between the individual and the visualization system is upheld. OpenGL rendering of scientific visualizations has worked remarkably well for exploratory visualization for most solver results. This is due to the consistency between the use of first-order representations in the simulation and the linear assumptions inherent in OpenGL (planar fragments and color-space interpolation). Unfortunately, the contract is broken when the solver discretization is of higher-order. There have been attempts to mitigate this through the use of spatial adaptation and/or texture mapping. These methods do a better job of approximating what the imagery should be but are not exact and tend to be view-dependent. This paper introduces new rendering mechanisms that specifically deal with the kinds of native data generated by high-order finite element solvers. The exploratory visualization tools are reassessed and cast in this system with the focus on image accuracy. This is accomplished in a GPU setting to ensure interactivity. |
Sponsorship | IEEE Computer Society Technical Committee on Computer Graphics IEEE Computer Society |
Page Count | 9 |
File Size | 1307345 |
Starting Page | 1803 |
Ending Page | 1811 |
File Format | |
ISSN | 10772626 |
Volume Number | 17 |
Issue Number | 12 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-12-01 |
Publisher Place | U.S.A. |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Finite element methods Data visualization Linear approximation Tensile stress Image color analysis Graphics processing unit cutsurface extraction. High-order finite elements spectral/hp elements cut-plane extraction GPU-based root-finding GPU ray-tracing |
Content Type | Text |
Resource Type | Article |
Subject | Computer Graphics and Computer-Aided Design Software Signal Processing Computer Vision and Pattern Recognition |
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