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An Anti-Aliasing Technique for Splatting

Abstract

Splatting is a popular direct volume rendering algorithm. However, the algorithm does not correctly render cases where the volume sampling rate is higher than the image sampling rate (e.g. more than one voxel maps into a pixel). This situation arises with orthographic projections of high-resolution volumes, as well as with perspective projections of volumes of any resolution. The result is potentially severe spatial and temporal aliasing artifacts. Some volume ray-casting algorithms avoid these artifacts by employing reconstruction kernels which vary in width as the rays diverge. Unlike ray-casting algorithms, existing splatting algorithms do not have an equivalent mechanism for avoiding these artifacts. In this paper we propose such a mechanism, which delivers high-quality splatted images and has the potential for a very efficient hardware implementation.

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Authors
  • J. Ed Swan II
  • Klaus Mueller
  • Torsten Möller
  • Naeem Shareef
  • Roger A. Crawfis
  • Roni Yagel
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Supplemental Material
Citation
Category
Paper in Conference Proceedings or in Workshop Proceedings (Full Paper in Proceedings)
Event Title
IEEE Conference on Visualization 1997
Divisions
Visualization and Data Analysis
Subjects
Computergraphik
Event Location
Phoenix, AZ
Event Type
Conference
Event Dates
Oct 19 - 24
ISSN/ISBN
1-58113-011-2
Date
October 1997
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