TIME-VARYING MULTIMODAL VOLUME RENDERING WITH 3D TEXTURES

Pascual Abellán, Sergi Grau, Dani Tost

2008

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.

Paper Citation

in Harvard Style

Abellán P., Grau S. and Tost D. (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

in Bibtex Style

@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},
}

in EndNote Style

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