Interactive Ray Tracing of Time Varying Data

Reinhard, Erik; Hansen, Charles; Parker, Steve

Interactive Ray Tracing of Time Varying Data

Files

077-082.pdf (713.14 KB)

Date

2002

Authors

Reinhard, Erik
Hansen, Charles
Parker, Steve

Publisher

The Eurographics Association

Abstract

We present a simple and effective algorithm for ray tracing iso-surfaces of time varying data sets. Each time step is partitioned into separate ranges of potentional iso-surface values. This creates a large number of relatively small files. Out-of-core rendering is implemented by reading for each time step the relevant iso-surface file, which contains its own spatial subdivision as well as the volumetric data. Since any of these data partitions is smaller than a single time step, the I/O bottleneck is overcome. Our method capitalizes on the ability of modern architectures to stream data off disk without interference of the operating system. Additionally, only a fraction of a time-step is held in memory at any moment during the visualization, which significantly reduces the required amount of internal memory.

        @inproceedings{:10.2312/EGPGV/EGPGV02/077-082
,
booktitle = {Eurographics Workshop on Parallel Graphics and Visualization
},
editor = {D. Bartz and X. Pueyo and E. Reinhard
},
title = {{Interactive Ray Tracing of Time Varying Data
}},
author = {Reinhard, Erik and 
Hansen, Charles and 
Parker, Steve
},
year = {2002
},
publisher = {The Eurographics Association
},
ISSN = {1727-348X
},
ISBN = {1-58113-579-3
},
DOI = {/10.2312/EGPGV/EGPGV02/077-082
}
}