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Authors: Oscar Amoros 1 ; Sergio Escalera 2 and Anna Puig 3

Affiliations: 1 Barcelona Supercomputing Center - CNS, Spain ; 2 UB-Computer Vision Center, Spain ; 3 University of Barcelona, Spain

ISBN: 978-989-8425-45-4

Keyword(s): Volume rendering, High-performance Computing and parallel rendering, Rendering hardware.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; High-Performance Computing and Parallel Rendering ; Rendering ; Rendering Hardware ; Volume Rendering

Abstract: In volume visualization, the voxel visibility and materials are carried out through an interactive editing of Transfer Function. In this paper, we present a two-level GPU-based labeling method that computes in times of rendering a set of labeled structures using the Adaboost machine learning classifier. In a pre-processing step, Adaboost trains a binary classifier from a pre-labeled dataset and, in each sample, takes into account a set of features. This binary classifier is a weighted combination of weak classifiers, which can be expressed as simple decision functions estimated on a single feature values. Then, at the testing stage, each weak classifier is independently applied on the features of a set of unlabeled samples. We propose an alternative representation of these classifiers that allow a GPU-based parallelizated testing stage embedded into the visualization pipeline. The empirical results confirm the OpenCL-based classification of biomedical datasets as a tough problem where an opportunity for further research emerges. (More)

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Paper citation in several formats:
Amoros, O.; Escalera, S. and Puig, A. (2011). ADABOOST GPU-BASED CLASSIFIER FOR DIRECT VOLUME RENDERING.In Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2011) ISBN 978-989-8425-45-4, pages 215-219. DOI: 10.5220/0003369902150219

@conference{grapp11,
author={Oscar Amoros. and Sergio Escalera. and Anna Puig.},
title={ADABOOST GPU-BASED CLASSIFIER FOR DIRECT VOLUME RENDERING},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2011)},
year={2011},
pages={215-219},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003369902150219},
isbn={978-989-8425-45-4},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2011)
TI - ADABOOST GPU-BASED CLASSIFIER FOR DIRECT VOLUME RENDERING
SN - 978-989-8425-45-4
AU - Amoros, O.
AU - Escalera, S.
AU - Puig, A.
PY - 2011
SP - 215
EP - 219
DO - 10.5220/0003369902150219

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