High-Quality, Semi-Analytical Volume Rendering for AMR Data

This paper presents a pipeline for high quality volume rendering of adaptive mesh refinement (AMR) datasets. We introduce a new method allowing high quality visualization of hexahedral cells in this context; this method avoids artifacts like discontinuities in the isosurfaces. To achieve this, we ch...

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Bibliographic Details
Published in:IEEE transactions on visualization and computer graphics 2009-11, Vol.15 (6), p.1611-1618
Main Authors: Marchesin, S., de Verdiere, G.C.
Format: Article
Language:English
Subjects:
Adaptive mesh refinement
close-up of an AMR dataset showing a meteorite falling into the sea rendered using our system
Continuity
Data visualization
Discontinuity
Graphics
Hardware
Interpolation
Isosurfaces
Mathematical analysis
Numerical simulation
Pipelines
Rendering
Rendering (computer graphics)
Sampling
Sampling methods
Signal analysis
Visualization
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Summary:This paper presents a pipeline for high quality volume rendering of adaptive mesh refinement (AMR) datasets. We introduce a new method allowing high quality visualization of hexahedral cells in this context; this method avoids artifacts like discontinuities in the isosurfaces. To achieve this, we choose the number and placement of sampling points over the cast rays according to the analytical properties of the reconstructed signal inside each cell. We extend our method to handle volume shading of such cells. We propose an interpolation scheme that guarantees continuity between adjacent cells of different AMR levels. We introduce an efficient hybrid CPU-GPU mesh traversal technique. We present an implementation of our AMR visualization method on current graphics hardware, and show results demonstrating both the quality and performance of our method.
ISSN:1077-2626
1941-0506
DOI:10.1109/TVCG.2009.149