van Baar, Jeroen
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CitationZwicker, Matthias, Hanspeter Pfister, Jeroen van Baar, and Markus Gross. 2001. Surface splatting. In Proceedings of the 28th annual conference on Computer graphics and interactive techniques: August 12-17, 2001, Los Angeles, C.A., ed. E. L. Fiume, 371-378. New York, N.Y.: Association for Computing Machinery.
AbstractModern laser range and optical scanners need rendering techniques that can handle millions of points with high resolution textures. This paper describes a point rendering and texture filtering technique called surface splatting which directly renders opaque and transparent surfaces from point clouds without connectivity. It is based on a novel screen space formulation of the Elliptical Weighted Average (EWA) filter. Our rigorous mathematical analysis extends the texture resampling framework of Heckbert to irregularly spaced point samples. To render the points, we develop a surface splat primitive that implements the screen space EWA filter. Moreover, we show how to optimally sample image and procedural textures to irregular point data during pre-processing. We also compare the optimal algorithm with a more efficient view-independent EWA pre-filter. Surface splatting makes the benefits of EWA texture filtering available to point-based rendering. It provides high quality anisotropic texture filtering, hidden surface removal, edge anti-aliasing, and order-independent transparency.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4266873
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