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Practical HDR texture compression

Författare:
Redaktör:
  • Robert Scopigno
  • Eduard Gröller
Publiceringsår: 2008
Språk: Engelska
Sidor: 1664-1676
Publikation/Tidskrift/Serie: Computer Graphics Forum
Volym: 27
Nummer: 6
Dokumenttyp: Artikel
Förlag: Blackwell Publishing

Sammanfattning

The use of high dynamic range (HDR) textures in real-time graphics applications can increase realism and provide a more vivid experience. However, the increased bandwidth and storage requirements for uncompressed HDR
data can become a major bottleneck. Hence, several recent algorithms for HDR texture compression have been
proposed. In this paper, we discuss several practical issues one has to confront in order to develop and implement HDR texture compression schemes. These include improved texture filtering and efficient offline compression.
For compression, we describe how Procrustes analysis can be used to quickly match a predefined template shape against chrominance data. To reduce the cost of HDR texture filtering, we perform filtering prior to the color transformation, and use a simple trick to reduce the incurred errors. We also introduce a number of novel compression modes, which can be combined with existing compression schemes, or used on their own.

Disputation

Nyckelord

  • Technology and Engineering
  • Texture compression
  • data compaction
  • Real-time graphics

Övriga

Published
Yes
  • Computer Graphics
  • ISSN: 0167-7055

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