Computer Science ›› 2014, Vol. 41 ›› Issue (Z6): 187-190.

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Calibration Method Based on Linear Feature for Fisheye Image

GUO Xiong-fei,LU Bin,LI Qing and XUE Chen-yang   

  • Online:2018-11-14 Published:2018-11-14

Abstract: In order to calibrate the distorted image captured by fisheye cameras,this paper drawed out a effective calibration method with the chessboard.Adopting standard distortion model,it firstly gets objective function on the basis of the linear feature,then detects accurately chessboard corners with a improved SUSAN algorithm.The next step it conducts curve fitting based on the previous corners.Finally the optimal distorted coefficients can be computed with progressive optimization algorithm so that objective function is minimal.Experiment results show that this method gets accurate corners coordinates,and has a low time complexity,moreover can calibrate effectively the distorted image because of fisheye lens.

Key words: Distortion calibration,Curve fitting,Linear feature,Progressive optimization

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