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dc.contributor.authorBoada, Imma
dc.contributor.authorNavazo Álvaro, Isabel
dc.contributor.authorScopigno, Roberto
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
dc.date.accessioned2010-11-03T09:26:39Z
dc.date.available2010-11-03T09:26:39Z
dc.date.created2001
dc.date.issued2001
dc.identifier.citationBoada, I.; Navazo, I.; Scopigno, R. Multiresolution volume visualitzacion with a texture-based octree. "The visual computer", 2001, vol. 17, núm. 3, p. 185-197.
dc.identifier.issn0178-2789
dc.identifier.urihttp://hdl.handle.net/2117/10079
dc.description.abstractAlthough 3D texture-based volume rendering guarantees image quality almost interactively, it is difficult to maintain an interactive rate when the technique has to be exploited on large datasets. In this paper, we propose a new texture memory representation and a management policy that substitute the classical one-texel per voxel approach for a hierarchical approach. The hierarchical approach benefits nearly homogeneous regions and regions of lower interest. The proposed algorithm is based on a simple traversal of the octree representation of the volume data. Driven by a user-defined image quality, defined as a combination of data homogeneity and importance, a set of octree nodes (the cut) is selected to be rendered. The degree of accuracy applied for the representation of each one of the nodes of the cut in the texture memory is set independently according to the user-defined parameters. The variable resolution texture model obtained reduces the texture memory size and thus texture swapping, improving rendering speed.
dc.format.extent13 p.
dc.language.isoeng
dc.publisherSpringer
dc.subjectÀrees temàtiques de la UPC::Informàtica::Infografia
dc.subject.lcshThree-dimensional imaging
dc.subject.otherVolume rendering
dc.subject.otherOctree
dc.subject.other3D Texture mapping
dc.subject.otherMultiresolution representation and rendering
dc.titleMultiresolution volume visualitzacion with a texture-based octree
dc.typeArticle
dc.subject.lemacInfografia tridimensional
dc.contributor.groupUniversitat Politècnica de Catalunya. MOVING - Grup de Recerca en Modelatge, Interacció i Visualització en Realitat Virtual
dc.identifier.doi10.1007/PL00013406
dc.relation.publisherversionhttp://www.springerlink.com/content/u6bud341krwd41dp/?p=d27d93eef8a343d3ad110e29d038450f&pi=0
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac2188726
dc.description.versionPostprint (published version)
local.citation.authorBoada, I.; Navazo, I.; Scopigno, R.
local.citation.publicationNameThe visual computer
local.citation.volume17
local.citation.number3
local.citation.startingPage185
local.citation.endingPage197


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