Proceedings of the 2014 International Conference on Computer, Communications and Information Technology

An Improved Outdoor Camera Calibration Method Based On EKF

Authors
Shaopo Zhu, Dong Hu
Corresponding Author
Shaopo Zhu
Available Online January 2014.
DOI
https://doi.org/10.2991/ccit-14.2014.68How to use a DOI?
Keywords
camera calibration, GPS coordinate, EKF, world coordinate error
Abstract
An improved outdoor camera calibration method based on Extended Kalman Filter (EKF) is proposed in this paper. GPS coordinate system is introduced to establish world coordinate system in the calibration procedure. According to the characteristics of GPS coordinate converted to plane coordinate and the camera calibration model, we establish the mapping relations of reference points between image plane coordinate and the world coordinate. Further, we consider the world coordinate error, set the world coordinates as the measure quantities, use the method of EKF to get the optimal estimation of intrinsic and extrinsic camera parameters, in EKF the camera’s intrinsic and extrinsic parameters are set as state variables, the transformation equations of image coordinate to the world coordinate are set as the measurement equations, and we let the observed feature points’ image coordinates and corresponding world coordinates as the input of the filter. Experimental results confirmed that the proposed method with high precision.
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This is an open access article distributed under the CC BY-NC license.

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Proceedings
2014 International Conference on Computer, Communications and Information Technology (CCIT 2014)
Part of series
Advances in Intelligent Systems Research
Publication Date
January 2014
ISBN
978-90786-77-97-0
ISSN
1951-6851
DOI
https://doi.org/10.2991/ccit-14.2014.68How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Shaopo Zhu
AU  - Dong Hu
PY  - 2014/01
DA  - 2014/01
TI  - An Improved Outdoor Camera Calibration Method Based On EKF
BT  - 2014 International Conference on Computer, Communications and Information Technology (CCIT 2014)
PB  - Atlantis Press
SN  - 1951-6851
UR  - https://doi.org/10.2991/ccit-14.2014.68
DO  - https://doi.org/10.2991/ccit-14.2014.68
ID  - Zhu2014/01
ER  -