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Authors: Wu Huang and Shihong Xia

Affiliation: Graduate University of Chinese Academy of Science, China

ISBN: 978-989-8425-37-9

Keyword(s): Optical motion capture, Label markers, Local k-d tree, Clinical gait analysis.

Related Ontology Subjects/Areas/Topics: Biomedical Engineering ; Biomedical Instrumentation ; Biomedical Instruments and Devices ; Computer-Aided Detection and Diagnosis

Abstract: Optical motion capture system is widely used to acquire human motions by capturing the trajectories of markers that are attached to the body. Identifying the marker trajectories is challenging but indispensable in most of real applications. Conventional methods rely on either labor-intensive manually labeling or auto-labeling with assumption of pose similarity to the topological model. This paper presents a novel method to flexibly label markers from human motion capture sequences. The point sets in a rigid segment defined in the topological model are firstly clustered by using the spectral clustering algorithm. For each rigid segment, a local k-d tree is constructed to robustly match two point sets without pose similarity assumption. To match all rigid bodies with those in topological model for efficiently and correctly labeling, the labeling process is carefully designed using the articulated structure of acquired data. Experiments show that our method outperforms conventional metho ds in accuracy and is robust when labeling markers in motion capture sequences from different subjects. (More)

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Paper citation in several formats:
Huang, W. and Xia, S. (2011). BUILDING LOCAL K-D TREE FOR FLEXIBLY LABELING ARTICULATED POINT SETS.In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011) ISBN 978-989-8425-37-9, pages 288-294. DOI: 10.5220/0003299802880294

@conference{biodevices11,
author={Wu Huang. and Shihong Xia.},
title={BUILDING LOCAL K-D TREE FOR FLEXIBLY LABELING ARTICULATED POINT SETS},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011)},
year={2011},
pages={288-294},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003299802880294},
isbn={978-989-8425-37-9},
}

TY - CONF

JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011)
TI - BUILDING LOCAL K-D TREE FOR FLEXIBLY LABELING ARTICULATED POINT SETS
SN - 978-989-8425-37-9
AU - Huang, W.
AU - Xia, S.
PY - 2011
SP - 288
EP - 294
DO - 10.5220/0003299802880294

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