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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 | Source: | 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 In this paper we present an efficient algorithm to detect when the extrinsic parameters of a camera are no longer valid, and reintegrate the displaced camera into the previously calibrated camera network.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. | Document URI: | http://hdl.handle.net/1942/7807 | Link to publication/dataset: | http://doi.ieeecomputersociety.org/10.1109/CRV.2007.31 | ISBN: | 978-0-7695-2786-4 | ISI #: | 000247666500001 | Category: | C1 | Type: | Proceedings Paper | Validations: | ecoom 2008 |
Appears in Collections: | Research publications |
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3211.pdf | Peer-reviewed author version | 225.19 kB | Adobe PDF | View/Open |
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