No Cover Image

Journal article 463 views

Hierarchical Photon Mapping / B Spencer; M.W Jones

IEEE Transactions on Visualization and Computer Graphics, Volume: 15, Issue: 1, Pages: 49 - 61

Swansea University Author: Jones, Mark

Full text not available from this repository: check for access using links below.

Check full text

DOI (Published version): 10.1109/TVCG.2008.67

Abstract

Photon mapping is an efficient method for producing high-quality, photorealistic images with full global illumination. In this paper we present a more accurate and efficient approach to final gathering using the photon map based upon hierarchical evaluation of the photons over each surface. We use t...

Full description

Published in: IEEE Transactions on Visualization and Computer Graphics
ISSN: 1077-2626
Published: 2009
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa177
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Photon mapping is an efficient method for producing high-quality, photorealistic images with full global illumination. In this paper we present a more accurate and efficient approach to final gathering using the photon map based upon hierarchical evaluation of the photons over each surface. We use the footprint of each gather ray to calculate the irradiance estimate area rather than deriving it from the local photon density. We then describe an efficient method for computing the irradiance from the photon map given an arbitrary estimate area. Finally, we demonstrate how the technique may be used to reduce variance and increase efficiency when sampling diffuse and glossy-specular BRDFs.
Item Description: IEEE Transactions on Visualization and Computer Graphics 15(1)
College: College of Science
Issue: 1
Start Page: 49
End Page: 61