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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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1997
Accession Number
ADA606342

Entities

People

  • J. E. Swan Ii
  • Klaus Mueller
  • Naeem Shareef
  • Roger Crawfis
  • Roni Yagel
  • Torsten Möller

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Artifacts
  • Classification
  • Computer Graphics
  • Computers
  • Filters
  • Filtration
  • Frequency
  • Frequency Domain
  • Geometry
  • Graphics
  • Polygons
  • Sampling
  • Standards
  • Two Dimensional
  • Visualizations

Fields of Study

  • Computer science

Readers

  • Computer Vision.
  • Image Processing and Computer Vision.