Analytic Ray Splitting for Controlled Precision DVR

Weiss, Sebastian; Westermann, Rüdiger

Analytic Ray Splitting for Controlled Precision DVR

Files

031-035.pdf (18.84 MB)

1021-file1.mp4 (136.92 MB)

1021-file4.mp4 (4.7 MB)

Date

2021

Authors

Weiss, Sebastian
Westermann, Rüdiger

Publisher

The Eurographics Association

Abstract

For direct volume rendering of post-classified data, we propose an algorithm that analytically splits a ray through a cubical cell at the control points of a piecewise-polynomial transfer function. This splitting generates segments over which the variation of the optical properties is described by piecewise cubic functions. This allows using numerical quadrature rules with controlled precision to obtain an approximation with prescribed error bounds. The proposed splitting scheme can be used to find all piecewise linear or monotonic segments along a ray, and it can thus be used to improve the accuracy of direct volume rendering, scale-invariant volume rendering, and multi-isosurface rendering.

        @inproceedings{10.2312:evs.20211051
,
booktitle = {EuroVis 2021 - Short Papers
},
editor = {Agus, Marco and Garth, Christoph and Kerren, Andreas
},
title = {{Analytic Ray Splitting for Controlled Precision DVR
}},
author = {Weiss, Sebastian and 
Westermann, Rüdiger
},
year = {2021
},
publisher = {The Eurographics Association
},
ISBN = {978-3-03868-143-4
},
DOI = {10.2312/evs.20211051
}
}