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计算机工程 ›› 2019, Vol. 45 ›› Issue (12): 196-200. doi: 10.19678/j.issn.1000-3428.0052987

• 图形图像处理 • 上一篇    下一篇

一种用于鱼眼镜头的线性标定方法

徐昀泽1,2, 赵汝进1, 马跃博1, 罗欣孛3   

  1. 1. 中国科学院光电技术研究所, 成都 610209;
    2. 中国科学院大学, 北京 100049;
    3. 北京卫星制造厂有限公司, 北京 100080
  • 收稿日期:2018-10-26 修回日期:2018-12-17 发布日期:2019-01-02
  • 作者简介:徐昀泽(1994-),男,硕士研究生,主研方向为相机标定;赵汝进(通信作者),副研究员、博士;马跃博,博士研究生;罗欣孛,高级工程师、硕士。
  • 基金资助:
    国家自然科学基金(61501429)。

A Linear Calibration Method for Fisheye Lens

XU Yunze1,2, ZHAO Rujin1, MA Yuebo1, LUO Xinbo3   

  1. 1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Beijing Satellite Manufacturing Factory Co., Ltd., Beijing 100080, China
  • Received:2018-10-26 Revised:2018-12-17 Published:2019-01-02

摘要: 针对鱼眼镜头的高精度标定需求,提出一种基于除法畸变模型的线性标定方法。通过除法模型将标定问题转换为线性方程组求解问题,在确定相机畸变中心后对畸变方程与投影矩阵进行解耦,分别求解相机内外参数和畸变系数,从而实现鱼眼镜头的快速鲁棒标定。实验结果表明,与非线性标定方法相比,该方法在保证标定准确性和可靠性的同时,计算效率提高了约10倍。

关键词: 相机标定, 除法模型, 鱼眼镜头, 畸变中心, 内外参数

Abstract: To meet the high-precision calibration demands of fisheye lens,this paper proposes a linear calibration method based on the division distortion model.The method converts the calibration problem into solving linear equation sets with a division model.Center of camera distortion located,the distortion equation is decoupled from the projection matrix,and the intrinsic and extrinsic parameters of the camera and distortion coefficients are solved respectively.Then,the robust calibration of fisheye lens can be completed.Experimental results show that compared with non-linear calibration methods,the proposed method increases computational efficiency about 10 times while keeping the accuracy and reliability of calibration.

Key words: camera calibration, division model, fisheye lens, distortion center, intrinsic and extrinsic parameter

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