Beyond Faster Photon Map Global Illumination

• Author(s) / Creator(s)

  • Neilson, Daniel
  • Yang, Herb

• Technical report TR04-23. Precalculating irradiance for photon maps is an enhancement to the photon mapping method that was proposed by Christensen to reduce redundant irradiance calculations during rendering. In this enhancement, irradiance values are precalculated at the location of photons in the photon map prior to rendering and are stored within the photon's data structure. These recalculated irradiance values are then used during rendering. However, this enhancement may calculate irradiance values that are not used during rendering. This paper presents an improvement to Christensen's method, called on-demand caching, that removes these unused irradiance calculations by performing irradiance calculations during rendering and caching the results in the photon map. | TRID-ID TR04-23

• Date created

  2004

• Subjects / Keywords

  • Global illumination
  • Ray tracing
  • Photon map
  • Irradiance cache
  • Computer Graphics

• Type of Item

  Report

• DOI

  https://doi.org/10.7939/R3QR4NT41

• License

  Attribution 3.0 International