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An information-theoretic observation channel for volume visualization

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).

漏 Computer Graphics Forum, 2013, vol. 32, n煤m. 3 (part 4), p. 411-420

Wiley

Author: Bramon Feixas, Roger
Ruiz Altisent, Marc
Bardera i Reig, Antoni
Boada, Imma
Feixas Feixas, Miquel
Sbert, Mateu
Date: 2013
Abstract: 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).
Format: application/pdf
ISSN: 0167-7055 (versi贸 paper)
1467-8659 (versi贸 electr貌nica)
Document access: http://hdl.handle.net/10256/11662
Language: eng
Publisher: Wiley
Collection: MICINN/PN 2011-2013/TIN2010-21089-C03-01
AGAUR/2009-2014/2009 SGR-643
Reproducci贸 digital del document publicat a: http://dx.doi.org/10.1111/cgf.12128
Articles publicats (D-IMA)
Is part of: 漏 Computer Graphics Forum, 2013, vol. 32, n煤m. 3 (part 4), p. 411-420
Rights: Tots els drets reservats
Subject: Informaci贸, Teoria de la
Information theory
Visualitzaci贸 (Inform脿tica)
Information display systems
Infografia
Computer graphics
Title: An information-theoretic observation channel for volume visualization
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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