2026-04-17T00:57:12Zhttps://recercat.cat/oai/requestoai:recercat.cat:10256/116622024-06-18T12:15:48Zcom_2072_452955com_2072_2054col_2072_453069
RECERCAT
author
Bramon Feixas, Roger
author
Ruiz Altisent, Marc
author
Bardera i Reig, Antoni
author
Boada, Imma
author
Feixas Feixas, Miquel
author
Sbert, Mateu
2024-06-18T12:15:47Z
2024-06-18T12:15:47Z
info:eu-repo/date/embargoEnd/2026-01-01info:eu-repo/date/embargoEnd/2026-01-012013
http://hdl.handle.net/10256/11662
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 positioningThis 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).
Tots els drets reservats info:eu-repo/semantics/embargoedAccess
Informació, Teoria de la
Information theory
Visualització (Informàtica)
Information display systems
Infografia
Computer graphics
An information-theoretic observation channel for volume visualization
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion