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Authors: Shigeru Ando 1 ; Toru Kurihara 1 and Dabi Wei 2

Affiliations: 1 University of Tokyo, Japan ; 2 Tokyo Institute of Technology, Japan

ISBN: 978-989-8111-69-2

Keyword(s): Optical flow equation, Weighted integral method, Modulated imaging, Correlation image sensor, Computer vision, Velocity field measurement, Particle image velocimetry.

Related Ontology Subjects/Areas/Topics: Applications ; Computer Vision, Visualization and Computer Graphics ; Human-Computer Interaction ; Image Filtering ; Image Formation and Preprocessing ; Image Formation, Acquisition Devices and Sensors ; Matching Correspondence and Flow ; Methodologies and Methods ; Motion and Tracking ; Motion, Tracking and Stereo Vision ; Pattern Recognition ; Physiological Computing Systems

Abstract: A novel mathematical method and a sensing system that detects velocity vector distribution on an optical image with a pixel-wise spatial resolution and a frame-wise temporal resolution is proposed. It is provided by the complex sinusoidally-modulated imaging using the three-phase correlation image sensor (3PCIS) and the exact algebraic inversion method based on the optical flow identity (OFI) satisfied by an intensity image and a complex-sinusoidally modulated image captured by the 3PCIS. Since the OFI is free from time derivatives, any limitations on the object velocity and inaccuracies due to approximated time derivatives is thoroughly avoided. An experimental system was constructed with a 320×256 pixel 3PCIS device and a standard PC for inversion operations and display. Several experimental results are shown including the dense motion capture of face and gesture and the particle image velocimetry of water vortices.

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Paper citation in several formats:
Ando S.; Kurihara T.; Wei D. and (2009). EXACT ALGEBRAIC METHOD OF OPTICAL FLOW DETECTION VIA MODULATED INTEGRAL IMAGING - Theoretical Formulation and Real-time Implementation using Correlation Image Sensor.In Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2009) ISBN 978-989-8111-69-2, pages 481-487. DOI: 10.5220/0001794104810487

@conference{visapp09,
author={Shigeru Ando and Toru Kurihara and Dabi Wei},
title={EXACT ALGEBRAIC METHOD OF OPTICAL FLOW DETECTION VIA MODULATED INTEGRAL IMAGING - Theoretical Formulation and Real-time Implementation using Correlation Image Sensor},
booktitle={Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2009)},
year={2009},
pages={481-487},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001794104810487},
isbn={978-989-8111-69-2},
}

TY - CONF

JO - Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2009)
TI - EXACT ALGEBRAIC METHOD OF OPTICAL FLOW DETECTION VIA MODULATED INTEGRAL IMAGING - Theoretical Formulation and Real-time Implementation using Correlation Image Sensor
SN - 978-989-8111-69-2
AU - Ando, S.
AU - Kurihara, T.
AU - Wei, D.
PY - 2009
SP - 481
EP - 487
DO - 10.5220/0001794104810487

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