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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/7807

Title: Extrinsic recalibration in camera networks
Authors: HERMANS, Chris
DUMONT, Maarten
BEKAERT, Philippe
Issue Date: 2007
Publisher: IEEE COMPUTER SOC
Citation: FOURTH CANADIAN CONFERENCE ON COMPUTER AND ROBOT VISION, PROCEEDINGS. p. 3-10.
Abstract: This work addresses the practical problem of keeping a camera network calibrated during a recording session. When dealing with real-time applications, a robust calibration of the camera network needs to be assured, without the burden of a full system recalibration at every (un)intended camera displacement. In this paper we present an efficient algorithm to detect when the extrinsic parameters of a camera are no longer valid, and reintegrate the displaced camera into the previously calibrated camera network. When the intrinsic parameters of the cameras are known, the algorithm can also be used to build. ad-hoc distributed camera networks, starting from three calibrated cameras. Recalibration is done using pairs of essential matrices, based on image point correspondences. Unlike other approaches, we do not explicitly compute any 3D structure for our calibration purposes.
Notes: Limburgs Univ Ctr, Hasselt Univ, Expertise Ctr Digital Media Transnatl, Diepenbeek, B-3590 Belgium.Hermans, C, Limburgs Univ Ctr, Hasselt Univ, Expertise Ctr Digital Media Transnatl, Wetenschapspk 2, Diepenbeek, B-3590 Belgium.
URI: http://hdl.handle.net/1942/7807
Link to publication: http://doi.ieeecomputersociety.org/10.1109/CRV.2007.31
ISI #: 000247666500001
ISBN: 978-0-7695-2786-4
Category: C1
Type: Proceedings Paper
Validation: ecoom, 2008
Appears in Collections: Research publications

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