DocumentCode :
2512650
Title :
Extrinsic Camera Parameter Estimation Using Video Images and GPS Considering GPS Positioning Accuracy
Author :
Kume, Hideyuki ; Taketomi, Takafumi ; Sato, Tomokazu ; Yokoya, Naokazu
Author_Institution :
Grad. Sch. of Inf. Sci., Nara Inst. of Sci. & Technol., Nara, Japan
fYear :
2010
fDate :
23-26 Aug. 2010
Firstpage :
3923
Lastpage :
3926
Abstract :
This paper proposes a method for estimating extrinsic camera parameters using video images and position data acquired by GPS. In conventional methods, the accuracy of the estimated camera position largely depends on the accuracy of GPS positioning data because they assume that GPS position error is very small or normally distributed. However, the actual error of GPS positioning easily grows to the 10m level and the distribution of these errors is changed depending on satellite positions and conditions of the environment. In order to achieve more accurate camera positioning in outdoor environments, in this study, we have employed a simple assumption that true GPS position exists within a certain range from the observed GPS position and the size of the range depends on the GPS positioning accuracy. Concretely, the proposed method estimates camera parameters by minimizing an energy function that is defined by using the reprojection error and the penalty term for GPS positioning.
Keywords :
Global Positioning System; cameras; parameter estimation; video signal processing; GPS position error; GPS positioning accuracy; camera positioning; extrinsic camera parameter estimation; satellite positions; video images; Accuracy; Cameras; Global Positioning System; Optimization; Parameter estimation; Receivers; Three dimensional displays; GPS; extrinsic camera parameter estimation; structure from motion;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Pattern Recognition (ICPR), 2010 20th International Conference on
Conference_Location :
Istanbul
ISSN :
1051-4651
Print_ISBN :
978-1-4244-7542-1
Type :
conf
DOI :
10.1109/ICPR.2010.954
Filename :
5597673
Link To Document :
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