Continuous Representation of Projected Attribute Spaces of Multifields over Any Spatial Sampling

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dc.contributor.authorMolchanov, Vladimiren_US
dc.contributor.authorFofonov, Alexeyen_US
dc.contributor.authorLinsen, Larsen_US
dc.contributor.editorB. Preim, P. Rheingans, and H. Theiselen_US
dc.date.accessioned2015-02-28T15:31:06Z
dc.date.available2015-02-28T15:31:06Z
dc.date.issued2013en_US
dc.description.abstractFor the visual analysis of multidimensional data, dimension reduction methods are commonly used to project to a lower-dimensional visual space. In the context of multifields, i.e., volume data with a multidimensional attribute space, the spatial arrangement of the samples in the volumetric domain can be exploited to generate a Continuous Representation of the Projected Attribute Space (CoRPAS). Here, the sample locations in the volumetric domain may be arranged in a structured or unstructured way and may or may not be connected by a grid or a mesh. We propose an approach to generate CoRPAS for any sample arrangement using an isotropic density function. An interactive visual exploration system with three coordinated views of volume visualization, CoRPAS, and an interaction widget based on star coordinates is presented. The star-coordinates widget provides an intuitive means for the user to change the projection matrix. The coordinated views allow for feature selection in form of brushing and linking. The approach is applied to both synthetic data and data resulting from numerical simulations of physical phenomena. In particular, simulations based on Smoothed Particle Hydrodynamics are addressed, where the simulation kernel can be used to produce a CoRPAS that is consistent with the simulation. We also show how a logarithmic scaling of attribute values in CoRPAS is supported, which is of high practical relevance.en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.identifier.issn1467-8659en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12117en_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltd.en_US
dc.subjectPicture/Image Generation [I.3.3]en_US
dc.subjectDisplay algorithmsen_US
dc.titleContinuous Representation of Projected Attribute Spaces of Multifields over Any Spatial Samplingen_US
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32-Issue 3
EuroVis13: Eurographics Conference on Visualization