Scene dependence of the non-gaussian scaling properties of natural images

A. Nevado; A. Turiel; N. Parga

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arXiv · cond-mat/0107332

Scene dependence of the non-gaussian scaling properties of natural images

A. Nevado·A. Turiel·N. Parga

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Abstract

We report results on the scaling properties of changes in contrast of natural images in different visual environments. This study confirms the existence, in a vast class of images, of a multiplicative process relating the variations in contrast seen at two different scales, as was found in \cite{NIPS97,TuMaPaNa98}. But it also shows that the scaling exponents are not universal: Even if most images follow the same type of statistics, they do it with different values of the distribution parameters. Motivated by these results, we also present the analysis of a generative model of images that reproduces those properties and that has the correct power spectrum. Possible implications for visual processing are also discussed.

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BibTeX RIS

A. Nevado, A. Turiel, N. Parga. 2001-07-16. Scene dependence of the non-gaussian scaling properties of natural images. https://arxiv.org/abs/cond-mat/0107332

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