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  Hierarchical Modeling of Local Image Features through Lp-Nested Symmetric Distributions

Sinz, F., Simoncelli, E., & Bethge, M. (2010). Hierarchical Modeling of Local Image Features through Lp-Nested Symmetric Distributions. In Y. Bengio, D. Schuurmans, J. Lafferty, C. Williams, & A. Culotta (Eds.), Advances in Neural Information Processing Systems 22 (pp. 1696-1704). Red Hook, NY, USA: Curran.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-C0C8-7 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0002-93C4-A
Genre: Konferenzbeitrag

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 Urheber:
Sinz, F1, 2, Autor           
Simoncelli, EP, Autor
Bethge, M1, 2, Autor           
Affiliations:
1Research Group Computational Vision and Neuroscience, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497805              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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Schlagwörter: -
 Zusammenfassung: We introduce a new family of distributions, called Lp-nested symmetric distributions, whose densities are expressed in terms of a hierarchical cascade of Lp-
norms. This class generalizes the family of spherically and Lp-spherically symmetric distributions which have recently been successfully used for natural image modeling. Similar to those distributions it allows for a nonlinear mechanism
to reduce the dependencies between its variables. With suitable choices of the parameters and norms, this family includes the Independent Subspace Analysis (ISA) model as a special case, which has been proposed as a means of deriving
filters that mimic complex cells found in mammalian primary visual cortex. Lp-nested distributions are relatively easy to estimate and allow us to explore the variety of models between ISA and the Lp-spherically symmetric models. By fitting the generalized Lp-nested model to 8 by 8 image patches, we show that the subspaces obtained from ISA are in fact more dependent than the individual filter
coefficients within a subspace. When first applying contrast gain control as preprocessing, however, there are no dependencies left that could be exploited by ISA. This suggests that complex cell modeling can only be useful for redundancy reduction in larger image patches.

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Sprache(n):
 Datum: 2010-04
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: BibTex Citekey: 6047
 Art des Abschluß: -

Veranstaltung

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Titel: 23rd Annual Conference on Neural Information Processing Systems (NIPS 2009)
Veranstaltungsort: Vancouver, BC, Canada
Start-/Enddatum: 2009-12-07 - 2009-12-10

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Titel: Advances in Neural Information Processing Systems 22
Genre der Quelle: Konferenzband
 Urheber:
Bengio, Y, Herausgeber
Schuurmans, D, Herausgeber
Lafferty, J, Herausgeber
Williams, C, Herausgeber
Culotta, A, Herausgeber
Affiliations:
-
Ort, Verlag, Ausgabe: Red Hook, NY, USA : Curran
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: 1696 - 1704 Identifikator: ISBN: 978-1-615-67911-9