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“Gabor Noise by Example”
Bruno Galerne, Ares Lagae, Sylvain Lefebvre and George Drettakis
ACM Transactions on Graphics (SIGGRAPH 2012 conf. proc.), 2012

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.

BibTex reference

@ARTICLE{GALERNE-2012-695670,
   HAL_ID     = "hal-00695670",
   URL        = "http://hal.archives-ouvertes.fr/hal-00695670",
   JOURNAL    = "ACM Transactions on Graphics (SIGGRAPH 2012 conf. proc.)",
   TITLE      = "Gabor Noise by Example",
   AUTHOR     = "Galerne, Bruno and Lagae, Ares and Lefebvre,Sylvain and Drettakis, Ge
                   orge",
   YEAR       = "2012",
}

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