Surface Splatting

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Surface Splatting (2001)

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by Matthias Zwicker , Hanspeter Pfister , Jeroen Van Baar , Markus Gross

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108 - 15 self

BibTeX

@INPROCEEDINGS{Zwicker01surfacesplatting,
    author = {Matthias Zwicker and Hanspeter Pfister and Jeroen Van Baar and Markus Gross},
    title = {Surface Splatting},
    booktitle = {},
    year = {2001},
    pages = {371--378},
    publisher = {ACM Press}
}

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Abstract

Abstract—In this paper, we present a framework for high quality splatting based on elliptical Gaussian kernels. To avoid aliasing artifacts, we introduce the concept of a resampling filter, combining a reconstruction kernel with a low-pass filter. Because of the similarity to Heckbert’s EWA (elliptical weighted average) filter for texture mapping, we call our technique EWA splatting. Our framework allows us to derive EWA splat primitives for volume data and for point-sampled surface data. It provides high image quality without aliasing artifacts or excessive blurring for volume data and, additionally, features anisotropic texture filtering for point-sampled surfaces. It also handles nonspherical volume kernels efficiently; hence, it is suitable for regular, rectilinear, and irregular volume datasets. Moreover, our framework introduces a novel approach to compute the footprint function, facilitating efficient perspective projection of arbitrary elliptical kernels at very little additional cost. Finally, we show that EWA volume reconstruction kernels can be reduced to surface reconstruction kernels. This makes our splat primitive universal in rendering surface and volume data. Index Terms—Rendering systems, volume rendering, texture mapping, splatting, antialiasing. 1

Keyphrases

volume data reconstruction kernel texture mapping heckbert ewa arbitrary elliptical kernel point-sampled surface data ewa splat primitive irregular volume datasets novel approach low-pass filter high image quality ewa volume reconstruction kernel little additional cost resampling filter volume rendering elliptical gaussian kernel efficient perspective projection footprint function index term splat primitive universal nonspherical volume kernel high quality excessive blurring technique ewa splatting point-sampled surface

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