When It Makes Sense to Use Uniform Grids for Ray Tracing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F11%3A00174019" target="_blank" >RIV/68407700:21230/11:00174019 - isvavai.cz</a>
Result on the web
<a href="http://wscg.zcu.cz/WSCG2011/!_2011_WSCG-Short_Papers.pdf" target="_blank" >http://wscg.zcu.cz/WSCG2011/!_2011_WSCG-Short_Papers.pdf</a>
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
When It Makes Sense to Use Uniform Grids for Ray Tracing
Original language description
Commonly used hierarchical data structures such as bounding volume hierarchies and kd-trees have rather high build times, which can be a bottleneck for applications rebuilding or updating the acceleration structure required by data changes. On the otherhand uniform grids can be built almost instantly in linear time, however, they can suffer from severe performance penalty, in particular in scenes with non-uniformly populated geometry. We improve on performance using a two-step approach that combines both approaches: first we build a uniform grid and test its performance. Second, using an estimate on the number of rays to be queried we either continue using the grid or build a hierarchical data structure instead. This way we select a more efficient data structure given a particular implementation of the algorithms which yields with high probability an overall smaller computational time. We evaluate the properties of this method for a set of 28 scenes.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
JC - Computer hardware and software
OECD FORD branch
—
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
WSCG'2011 - 19-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2011, Communication Papers
ISBN
978-80-86943-82-4
ISSN
—
e-ISSN
—
Number of pages
8
Pages from-to
193-200
Publisher name
UNION Agency - Science Press
Place of publication
Plzeň
Event location
Plzeň
Event date
Jan 31, 2011
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
—