Title: Compact Rectilinear Grids for the Ray Tracing of Irregular Scenes
Authors: Costa, Vasco
Madeiras Pereira, João
Citation: WSCG 2011: Full Papers Proceedings: The 19th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision in cooperation with EUROGRAPHICS Association, p. 9-16.
Issue Date: 2011
Publisher: Václav Skala - UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/WSCG2011/!_2011_WSCG_Full_papers.pdf
ISBN: 978-80-86943-83-1
Keywords: pravidelné mřížky;sledování paprsku;prostorové podrozdělení
Keywords in different language: regular grids;ray tracing;spatial subdivision
Abstract: Regular grid spatial subdivision is frequently used for fast ray tracing of scanned models. Scanned models feature regular sized primitives, with a regular spatial distribution. Grids have worse performance, than other subdivision techniques, for irregular models without these characteristics. We propose a method to improve the performance of grids for rendering irregular scenes by allowing the individual placement of grid split planes: the rectilinear grid. We describe how to construct and traverse a rectilinear grid. To exploit cache memory in modern processors compression is used for the split plane and grid cell data. We demonstrate in a series of tests that the method has faster ray tracing rendering performance than a compressed regular grid of similar dimensions.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG '2011: Full Papers Proceedings

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/10804

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