Information Theory-Based Automatic Multimodal Transfer Function Design
dc.contributor.author
dc.date.accessioned
2014-01-17T09:23:30Z
dc.date.available
2014-01-17T09:23:30Z
dc.date.issued
2013-07
dc.identifier.issn
1089-7771
dc.identifier.uri
dc.description.abstract
In this paper, we present a new framework for multimodal volume visualization that combines several informationtheoretic strategies to define both colors and opacities of the multimodal transfer function. To the best of our knowledge, this is the first fully automatic scheme to visualize multimodal data. To define the fused color, we set an information channel between two registered input data sets and, afterwards, we compute the informativeness associated with the respective intensity bins. This informativeness is used to weight the color contribution from both initial 1D transfer functions. To obtain the opacity, we apply an optimization process that minimizes the informational divergence between the visibility distribution captured by a set of viewpoints and a target distribution proposed by the user. This distribution is defined either from the data set features, from manually set importances, or from both. Other problems related to the multimodal visualization, such as the computation of the fused gradient and the histogram binning, have also been solved using new information-theoretic strategies. The quality and performance of our approach is evaluated on different data sets
dc.description.sponsorship
This work was supported in part by the Spanish Government under Grant TIN2010-21089-C03-01, the Catalan Government under Grant 2009-SGR-643, and by SUR of DEC of Generalitat de Catalunya (Catalan Government)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
IEEE
dc.relation
info:eu-repo/grantAgreement/MICINN//TIN2010-21089-C03-01/ES/CONTENIDO DIGITAL PARA JUEGOS SERIOS: CREACION, GESTION, RENDERIZADO E INTERACCION/
AGAUR/2009-2014/2009 SGR-643
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Versió postprint del document publicat a: http://dx.doi.org/10.1109/JBHI.2013.2263227
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© IEEE Transactions on Information Technology in Biomedicine, vol. 17, núm. 4, p. 870-880
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Articles publicats (IIIA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Information Theory-Based Automatic Multimodal Transfer Function Design
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
Cap
dc.type.version
info:eu-repo/semantics/acceptedVersion
dc.identifier.doi
dc.identifier.idgrec
018303
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1558-0032