Combining Point Clouds and Volume Objects in Volume Scene Graphs

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dc.contributor.authorChen, Minen_US
dc.contributor.editorKlaus Mueller and Thomas Ertl and Eduard Groelleren_US
dc.date.accessioned2014-01-29T17:43:11Z
dc.date.available2014-01-29T17:43:11Z
dc.date.issued2005en_US
dc.description.abstractThis paper describes an extension to the technical framework of Constructive Volume Geometry (CVG) in order to accommodate point clouds in volume scene graphs. It introduces the notion of point-based volume object (PBVO) that is characterized by the opacity, rather than the geometry, of a point cloud. It examines and compares several radial basis functions (RBFs), including the one proposed in this paper, for constructing scalar fields from point clouds. It applies basic CVG operators to PBVOs and demonstrates the inter-operability of PBVOs with conventional volume objects including those procedurally defined and those constructed from volume datasets. It presents an octree-based algorithm for reducing the complexity in rendering a PBVO with a large number of points, and a set of testing results showing a significant speedup when an octree is deployed for rendering PBVOs.en_US
dc.description.seriesinformationVolume Graphics 2005en_US
dc.identifier.isbn3-905673-26-6en_US
dc.identifier.issn1727-8376en_US
dc.identifier.urihttps://doi.org/10.2312/VG/VG05/127-135en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.5 [Computer Graphics]: Object Modeling - Object hierarchies; I.3.3 [Computer Graphics]: Image Generation - Display algorithms; Keywords: Volume graphics, volume visualization, volume scene graph, constructive volume geometry, pointbased modeling, point-based rendering, radial basis functions, ray casting.en_US
dc.titleCombining Point Clouds and Volume Objects in Volume Scene Graphsen_US
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VG05: Eurographics/IEEE VGTC Workshop on Volume Graphics 2005