Username   Password       Forgot your password?  Forgot your username? 

 

Circle Center Automatic Extraction and Sorting based on Improved Circular Target

Volume 15, Number 5, May 2019, pp. 1417-1426
DOI: 10.23940/ijpe.19.05.p18.14171426

Shijie Deng, Jiang You, Liwei Tang, and Xujun Su

Department of Artillery Engineering, Army Engineering University, Shijiazhuang, 050003, China

(Submitted on November 22, 2018; Revised on December 18, 2018; Accepted on February 21, 2019)

Abstract:

In order to solve the problems that the traditional circular target is not convenient for automatic camera calibration, the accuracy of circle centering is not high, and the circle centering array is greatly influenced by the rotation angle of the circular target, a circular target suitable for automatic camera calibration was designed. For this target, a least squares center-fitting method based on random sampling and a centroid lattice sequential sorting method based on vector angle were proposed. The experimental results showed that the average centering error was 0.0061 pixels using this center extraction algorithm. Compared with the traditional least squares fitting method, the accuracy was higher; for the calibration target 0-360 degree rotation, it could more quickly and accurately complete the center-point lattice sorting. The average sorting time was 0.0096s, and it was easier to implement on-line camera automatic calibration.

References: 14

    1. F. F. Gu, H. Zhao, and P. H. Bu, “Analysis and Correction of Projection Error of Camera Calibration Ball,” Acta Optica Sinica, Vol. 32, No. 12, pp. 1215001, December 2012
    2. D. Zhang, J. Duan, L. J. Gu, and W. B. Jing, “Method of Camera Calibration based on Image Processing,” Infrared and Laser Engineering, Vol. 36, Supplement, pp. 293-297, June 2007
    3. J. Bouguet, “Visual Methods for Three-Dimensional Modeling,” California Institute of Technology, Pasadena, 1999
    4. G. Bradski and A. Kaehler, “Learning OpenCV,” O'Reilly Media, Inc., Sebastopol, 2008
    5. P. H. Bu, H. Zhao, F. F. Gu, Y. Y. Ma, and H. H. Li, “A Fully Automatic Camera Calibration Method based on Planar Target,” Acta Optica Sinica, Vol. 34, No. 10, pp. 1015004, October 2014
    6. Y. Xu, P. Y. Guo, G. C. Long, X. H. Zhang, and Q. F. Yu, “Research on Fully Automatic Camera Calibration Method,” Acta Optica Sinica, Vol. 33, No. 6, pp. 0612007, June 2013
    7. T. N. Zhang, Y. Q. Tu, and D. C. Wang, “Novel Algorithm for Fast Detecting Checkerboard Corners,” Computer Engineering and Applications, Vol. 44, No. 31, pp. 236-238, 2008
    8. B. Zhao and J. Zhou, “Automatic Detection and Sorting of Corners by Improved Chessboard Pattern,” Optics and Precision Engineering, Vol. 23, No. 1, pp. 237-244, January 2015
    9. A. Abellard, M. Bouchouicha, and M. M. B. Khelifa, “A Genetic Algorithm Application to Stereo Calibration,” in Proceedings of the International Symposium on Computational Intelligence in Robotics and Automation, pp. 285-290, Finland, 2005
    10. R. B. Xia, W. J. Liu, J. B. Zhao, and J. T. Xu, “Fully Automatic Camera Calibration Method based on Circular Makers,” Chinese Journal of Scientific Instrument, Vol. 30, No. 2, pp. 368-373, February 2009
    11. L. Liang, D. F. Yin, and C. Wang, “Design and Detection Methods for Accurate Camera Calibration Targets,” Journal of Xi'an Jiaotong University, Vol. 45, No. 4, pp. 82-85, April 2011
    12. G. D. Liu, B. G. Liu, F. D. Chen, and T. Hu, “Study on the Method of the Accuracy Evaluation of Subpixel Location Operators,” Acta Optica Sinica, Vol. 29, No. 12, pp. 3446-3451, December 2009
    13. J. Zhou, L. T. Chen, Q. H. Liu, Y. M. Li, and Y. B. Rao, “Fast and Accurate RANSAC based on Optimal Sequential Probability Test and Local Optimization,” Chinese Journal of Scientific Instrument, Vol. 33, No. 9, pp. 2037-2044, September 2012
    14. C. Y. Zhang and W. Zou, “Design, Detection and Sorting Method for a Kind of Fisheye Camera's Calibration Board,” Computer Engineering and Applications, Vol. 51, No. 15, pp. 188-192, 2015

     

    Please note : You will need Adobe Acrobat viewer to view the full articles.Get Free Adobe Reader

     
    This site uses encryption for transmitting your passwords. ratmilwebsolutions.com