Surfels: Surface Elements as Rendering Primitives

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Surfels: Surface Elements as Rendering Primitives

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Title: Surfels: Surface Elements as Rendering Primitives
Author: Pfister, Hanspeter; Zwicker, Matthias; van Baar, Jeroen; Gross, Markus

Note: Order does not necessarily reflect citation order of authors.

Citation: Pfister, Hanspeter, Matthias Zwicker, Jeroen van Baar, and Markus Gross. 2000. Surfels: Surface elements as rendering primitives. In Proceedings of the 27th annual conference on Computer graphics and interactive techniques: July 23-28, 2000, New Orleans, Louisiana, ed. K. Akeley, 335-342. New York, N.Y.: Association for Computing Machinery.
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Abstract: Surface elements (surfels) are a powerful paradigm to efficiently render complex geometric objects at interactive frame rates. Unlike classical surface discretizations, i.e., triangles or quadrilateral meshes, surfels are point primitives without explicit connectivity. Surfel attributes comprise depth, texture color, normal, and others. As a pre-process, an octree-based surfel representation of a geometric object is computed. During sampling, surfel positions and normals are optionally perturbed, and different levels of texture colors are prefiltered and stored per surfel. During rendering, a hierarchical forward warping algorithm projects surfels to a z-buffer. A novel method called visibility splatting determines visible surfels and holes in the z-buffer. Visible surfels are shaded using texture filtering, Phong illumination, and environment mapping using per-surfel normals. Several methods of image reconstruction, including supersampling, offer flexible speed-quality tradeoffs. Due to the simplicity of the operations, the surfel rendering pipeline is amenable for hardware implementation. Surfel objects offer complex shape, low rendering cost and high image quality, which makes them specifically suited for low-cost, real-time graphics, such as games.
Published Version: doi:10.1145/344779.344936
Other Sources: http://gvi.seas.harvard.edu/sites/all/files/SIG2000_0.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4138746

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  • FAS Scholarly Articles [7219]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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