Du är här

Fast equal-area mapping of the (hemi)sphere using SIMD

Författare:
  • Petrik Clarberg (Mr)
Publiceringsår: 2008
Språk: Engelska
Sidor: 53-68
Publikation/Tidskrift/Serie: Journal of Graphics Tools, GPU, & Game Tools
Volym: 13
Nummer: 3
Dokumenttyp: Artikel
Förlag: AK Peters

Sammanfattning

We present a fast vectorized implementation of a transform that maps
points in the unit square to the surface of the sphere, while preserving fractional
area. The mapping uses the octahedral map combined with an equal-area param-
eterization and has many desirable features such as low distortion, straightforward
interpolation, and fast inverse and forward transforms. Our SIMD implementation
completely avoids branching and uses polynomial approximations for the trigono-
metric operations, along with other tricks. This results in up to 9 times speed-up
over a traditional scalar implementation. Source code is available online

Disputation

Nyckelord

  • Technology and Engineering

Övriga

Published
Yes
  • Computer Graphics
  • ISSN: 2151-237X

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

 

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen