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Title: Gabor noise by example
Authors: Galerne, Bruno *
Lagae, Ares * ×
Lefebvre, Sylvain
Drettakis, George #
Issue Date: Jul-2012
Publisher: Association for Computing Machinery
Series Title: ACM Transactions on Graphics vol:31 issue:4 pages:73:1-73:9
Conference: SIGGRAPH edition:2012 location:Los Angeles, USA date:5-9 August 2012
Article number: 73
Abstract: Procedural noise is a fundamental tool in Computer Graphics. However, designing noise patterns is hard. In this paper, we present Gabor noise by example, a method to estimate the parameters of bandwidth-quantized Gabor noise, a procedural noise function that can generate noise with an arbitrary power spectrum, from exemplar Gaussian textures, a class of textures that is completely characterized by their power spectrum. More specifically, we introduce (i) bandwidth-quantized Gabor noise, a generalization of Gabor noise to arbitrary power spectra that enables robust parameter estimation and efficient procedural evaluation; (ii) a robust parameter estimation technique for quantized-bandwidth Gabor noise, that automatically decomposes the noisy power spectrum estimate of an exemplar into a sparse sum of Gaussians using non-negative basis pursuit denoising; and (iii) an efficient procedural evaluation scheme for bandwidth-quantized Gabor noise, that uses multi-grid evaluation and importance sampling of the kernel parameters. Gabor noise by example preserves the traditional advantages of procedural noise, including a compact representation and a fast on-the-fly evaluation, and is mathematically well-founded.
ISSN: 0730-0301
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Informatics Section
* (joint) first author
× corresponding author
# (joint) last author

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