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Authors: Manya V. Afonso ; Jorge S. Marques and Jacinto C. Nascimento

Affiliation: Instituto Superior Técnico, Portugal

ISBN: 978-989-8425-99-7

Keyword(s): Vector fields, Video segmentation, Optical flow, Trajectories.

Related Ontology Subjects/Areas/Topics: Applications ; Computer Vision, Visualization and Computer Graphics ; Human-Computer Interaction ; Image and Video Analysis ; Methodologies and Methods ; Motion and Tracking ; Motion, Tracking and Stereo Vision ; Object Recognition ; Pattern Recognition ; Physiological Computing Systems ; Software Engineering ; Video Analysis

Abstract: Multiple motion fields are an efficient way of summarising the movement of objects in a scene and allow an automatic classification of objects activities in the scene. However, their estimation relies on some kind of supervised learning e.g., using manually edited trajectories. This paper proposes an automatic method for the estimation of multiple motion fields. The proposed algorithm detects multiple moving objects and their velocities in a video sequence using optical flow. This leads to a sequence of centroids and corresponding velocity vectors. A matching algorithm is then applied to group the centroids into trajectories, each of them describing the movement of an object in the scene. The paper shows that motion fields can be reliably estimated from the detected trajectories leading to a fully automatic procedure for the estimation of multiple motion fields.

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Paper citation in several formats:
Afonso, M.; Afonso, M.; Marques, J. and Nascimento, J. (2012). AUTOMATIC ESTIMATION OF MULTIPLE MOTION FIELDS USING OBJECT TRAJECTORIES AND OPTICAL FLOW.In Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 2: ICPRAM, ISBN 978-989-8425-99-7, pages 457-462. DOI: 10.5220/0003783404570462

@conference{icpram12,
author={Manya V. Afonso. and Manya V. Afonso. and Jorge S. Marques. and Jacinto C. Nascimento.},
title={AUTOMATIC ESTIMATION OF MULTIPLE MOTION FIELDS USING OBJECT TRAJECTORIES AND OPTICAL FLOW},
booktitle={Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 2: ICPRAM,},
year={2012},
pages={457-462},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003783404570462},
isbn={978-989-8425-99-7},
}

TY - CONF

JO - Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 2: ICPRAM,
TI - AUTOMATIC ESTIMATION OF MULTIPLE MOTION FIELDS USING OBJECT TRAJECTORIES AND OPTICAL FLOW
SN - 978-989-8425-99-7
AU - Afonso, M.
AU - Afonso, M.
AU - Marques, J.
AU - Nascimento, J.
PY - 2012
SP - 457
EP - 462
DO - 10.5220/0003783404570462

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