Distributed Out‐of‐Core Stochastic Progressive Photon Mapping. (4th March 2014)

• Record Type: Journal Article
• Authors: Günther, Tobias; Grosch, Thorsten
• Is Part Of: Computer graphics forum. Volume 33:Number 6(2014)
• Page Start: 154
• Page End: 166
• Publication Date: 2014-03-04
• Subjects: Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.12340
• Languages: English
• ISSNs: 0167-7055

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="cgf12340-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>At present, stochastic progressive Q21 photon mapping (SPPM) is one of the most comprehensive methods for a consistent global illumination computation. Even though the number of photons is unlimited due to its progressive nature, the scene size is still bound by the available main memory. In this paper, we present the first consistent out‐of‐core SPPM algorithm. In order to cope with large scenes, we automatically subdivide the geometry and parallelly trace photons and eye rays in a portal‐based system, distributed across multiple machines in a commodity cluster. Moreover, modifications of the original SPPM method are introduced that keep both the utilization of tracer machines high and the network traffic low. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh1f92kspb" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>