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Article Dans Une Revue ACM Transactions on Graphics Année : 2012

Gabor Noise by Example

Bruno Galerne
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  • PersonId : 924934
Ares Lagae
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  • PersonId : 871640

Résumé

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. See project page at : http://graphics.cs.kuleuven.be/publications/GLLD12GNBE/
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Dates et versions

hal-00695670 , version 1 (09-05-2012)

Identifiants

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Bruno Galerne, Ares Lagae, Sylvain Lefebvre, George Drettakis. Gabor Noise by Example. ACM Transactions on Graphics, 2012, 31 (4), pp.Article No. 73. ⟨10.1145/2185520.2185569⟩. ⟨hal-00695670⟩
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