2026-04-13T02:05:24Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/116622024-06-18T12:15:48Zcom_2072_452955com_2072_2054col_2072_453069

An information-theoretic observation channel for volume visualization Bramon Feixas, Roger Ruiz Altisent, Marc Bardera i Reig, Antoni Boada, Imma Feixas Feixas, Miquel Sbert, Mateu Informació, Teoria de la Information theory Visualització (Informàtica) Information display systems Infografia Computer graphics Different quality metrics have been proposed in the literature to evaluate how well a visualization represents the underlying data. In this paper, we present a new information-theoretic framework that quantifies the information transfer between the source data set and the rendered image. This approach is based on the definition of an observation channel whose input and output are given by the intensity values of the volumetric data set and the pixel colors, respectively. From this channel, the mutual information, a measure of information transfer or correlation between the input and the output, is used as a metric to evaluate the visualization quality. The usefulness of the proposed observation channel is illustrated with three fundamental visualization applications: selection of informative viewpoints, transfer function design, and light positioning This work has been funded in part by grants from the Spanish Government (Nr. TIN2010-21089-C03-01) and from the Catalan Government (Nr. 2009-SGR-643). This work has also been supported by SUR of DEC of Generalitat de Catalunya (Catalan Government). 2024-06-18T12:15:47Z 2024-06-18T12:15:47Z 2024-06-18T12:15:47Z info:eu-repo/date/embargoEnd/2026-01-01 info:eu-repo/date/embargoEnd/2026-01-01 2013 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10256/11662 info:eu-repo/semantics/altIdentifier/doi/10.1111/cgf.12128 info:eu-repo/semantics/altIdentifier/issn/0167-7055 info:eu-repo/semantics/altIdentifier/eissn/1467-8659 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 Tots els drets reservats info:eu-repo/semantics/embargoedAccess Wiley © Computer Graphics Forum, 2013, vol. 32, núm. 3 (part 4), p. 411-420 Articles publicats (D-IMA)