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Gabor Noise by Example
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.
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
YEAR = "2012",
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