Multiresolution view-dependent splat based volume rendering of large irregular data

We present techniques for multiresolution approximation and hardware-assisted splat based rendering to achieve interactive volume visualization of large irregular data sets. We examine two methods of generating multiple resolutions of irregular volumetric grids and a data structure supporting the sp...

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Bibliographic Details
Published in:IEEE Parallel and Large Data Visualization and Graphics Symposium 2001 pp. 93 - 155
Main Authors: Meredith, J., Kwan-Liu Ma
Format: Conference Proceeding
Language:English
Published: IEEE 2001
Subjects:
Computational modeling
Concurrent computing
Data structures
Data visualization
Graphics
Hardware
Laboratories
Large-scale systems
Mesh generation
Rendering (computer graphics)
ISBN:0780372239, 9780780372238
Online Access:Get full text
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Summary:We present techniques for multiresolution approximation and hardware-assisted splat based rendering to achieve interactive volume visualization of large irregular data sets. We examine two methods of generating multiple resolutions of irregular volumetric grids and a data structure supporting the splatting approach for volume rendering. These techniques are implemented in combination with a view-dependent error based resolution selection to maintain accuracy at both low and high zoom levels. In addition, the error tolerance may be adjusted at run time to obtain the desired balance between high frame rates and accurate rendering. Along with an effective way to compute gradients for lighting, we offer an integrated solution for interactive volume rendering of irregular-mesh or meshless data, and we demonstrate our technique on unstructured-grid data sets from aerodynamic flow simulations.
ISBN:0780372239
9780780372238
DOI:10.1109/PVGS.2001.964409