Generalized lifting with adaptive local pdf estimation for image coding

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor.author	Rolon Garrido, Julio Cesar
dc.contributor.author	Mendoça, Eduardo
dc.contributor.author	Salembier Clairon, Philippe Jean
dc.date	2009
dc.identifier.citation	Rolon, J.C.; Mendoça, E.; Salembier, P. Generalized lifting with adaptive local pdf estimation for image coding. A: Picture Coding Symposium. "PSC 2009". Chicago: IEEE Press. Institute of Electrical and Electronics Engineers, 2009, p. 1-4.
dc.identifier.citation	978-1-4244-4593-6
dc.identifier.citation	10.1109/PCS.2009.5167433
dc.identifier.citation	05/2009
dc.identifier.uri	http://hdl.handle.net/2117/8835
dc.language.iso	eng
dc.publisher	IEEE Press. Institute of Electrical and Electronics Engineers
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject	Signal theory (Telecommunication)
dc.subject	Wavelets (Mathematics)
dc.subject	Senyal, Teoria del (Telecomunicació)
dc.title	Generalized lifting with adaptive local pdf estimation for image coding
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	In this paper we introduce an adaptive local pdf estimation strategy for the construction of Generalized Lifting (GL) mappings in the wavelet domain. Our approach consists in trying to estimate the local pdf of the wavelet coefficients conditioned to a context formed by neighboring coefficients. To this end, we search in a small causal window for similar contexts. This strategy is independent of the wavelet filters used to transform the image. Experimental results exhibit interesting gains in terms of energy reduction comparable to those obtained in [8]. In order to take benefit from this energy reduction, specific entropy encoder should be designed in the future.

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