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Authors: Pascual Abellán ; Sergi Grau and Dani Tost

Affiliation: Divisió Informàtica CREB, UPC, Spain

ISBN: 978-989-8111-20-3

Keyword(s): Volume rendering, Multimodality, Time-varying Data, Frame-to-frame coherence, 3D texture mapping.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Rendering ; Volume Rendering

Abstract: In this paper, we propose a rendering method for multimodal and time-varying data based on 3D texture mapping. Our method takes as input two registered voxel models: one with static data and the other with time-varying values. It visualizes the fusion of data through time steps of different sizes, forward and backward. At each frame we use one 3D texture for each modality. We compute and compose a set of view-aligned texture slices. For each texel of a slice, we perform a fetch to each 3D texture and realize fusion and shading using a fragment shader. We codify the two shading transfer functions on auxiliary 1D textures. Moreover, the weight of each modality in fusion is not constant but defined through a 2D fusion transfer function implemented as a 2D texture. We benefit from frame-to-frame coherence to avoid reloading the time-varying data texture at each frame. Instead, we update it at each frame using a 2D texture that run-length encodes the variation of property values through time. The 3D texture updating is done entirely on the GPU, which significantly speeds up rendering. Our method is fast and versatile and it provides a good insight into multimodal data. (More)

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Paper citation in several formats:
Abellán P.; Grau S.; Tost D. and (2008). TIME-VARYING MULTIMODAL VOLUME RENDERING WITH 3D TEXTURES.In Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008) ISBN 978-989-8111-20-3, pages 223-230. DOI: 10.5220/0001093802230230

@conference{grapp08,
author={Pascual Abellán and Sergi Grau and Dani Tost},
title={TIME-VARYING MULTIMODAL VOLUME RENDERING WITH 3D TEXTURES},
booktitle={Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008)},
year={2008},
pages={223-230},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001093802230230},
isbn={978-989-8111-20-3},
}

TY - CONF

JO - Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2008)
TI - TIME-VARYING MULTIMODAL VOLUME RENDERING WITH 3D TEXTURES
SN - 978-989-8111-20-3
AU - Abellán, P.
AU - Grau, S.
AU - Tost, D.
PY - 2008
SP - 223
EP - 230
DO - 10.5220/0001093802230230

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