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Outdoor camera calibration method using GPS coordinate based on two-stage optimization

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2 Author(s)
Shi Yujie ; Educ. Minist.'s Key Lab. of Broadband Wireless Commun. & Sensor Network Technol., Nanjing Univ. of Posts & Telecommun., Nanjing, China ; Hu Dong

Camera calibration is a very important and necessary step in computer vision, especially in 3D reconstruction, target tracking and positioning. In this paper, a GPS coordinate is first introduced and incorporated into Tsai two-step camera calibration method. Owing to the limitation of the accuracy of GPS receivers at present, there's a relatively large error in camera calibration parameters. A hybrid optimization algorithm (GA-PSO) by combining a genetic algorithm and particle swarm optimization is proposed further to improve camera parameters. Experimental results prove that our method is feasible and efficient.

Published in:

Image Analysis and Signal Processing (IASP), 2012 International Conference on

Date of Conference:

9-11 Nov. 2012

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