[1]林绿开,钮倩倩,李 毅*.基于棋盘标定板的优化相机参数标定方法[J].计算机技术与发展,2023,33(12):101-105.[doi:10. 3969 / j. issn. 1673-629X. 2023. 12. 014]
　LIN Lyu-kai,NIU Qian-qian,LI Yi*.Optimized Camera Parameter Calibration Method Based on Checkerboard[J].,2023,33(12):101-105.[doi:10. 3969 / j. issn. 1673-629X. 2023. 12. 014]

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基于棋盘标定板的优化相机参数标定方法()

分享到：

《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:

33

期数:

2023年12期

页码:

101-105

栏目:

媒体计算

出版日期:

2023-12-10

文章信息/Info

Title:

Optimized Camera Parameter Calibration Method Based on Checkerboard

文章编号:

1673-629X(2023)12-0101-05

作者:

林绿开¹ ; 钮倩倩¹ ; 李 毅¹; 2*

1. 温州大学 计算机与人工智能学院,浙江 温州 325000;

2. 浙江大学 计算机科学与技术学院,浙江 杭州 310058

Author(s):

LIN Lyu-kai1 ; NIU Qian-qian1 ; LI Yi1; 2*

1. School of Computer and Artificial Intelligence,Wenzhou University,Wenzhou 325000,China;

2. School of Computer Science and Technology,Zhejiang University,Hangzhou 310058,China

关键词:

单目相机; 标定算法; 奇异值分解; Levenberg-Marquardt 优化; 张正友标定法

Keywords:

monocular camera; calibration algorithm; singular value decomposition; Levenberg-Marquardt optimization; Zhengyou Zhang Calibration Method

分类号:

TP391. 41

DOI:

10. 3969 / j. issn. 1673-629X. 2023. 12. 014

摘要:

相机标定是计算机视觉与重建定位的重要基础,是构建二维图像与三维空间联系的重要桥梁。 该文根据传统线性相机成像的规律,在理想的针孔相机成像模型的基础上,同时针对张正友标定

法中相机参数求解过程较为复杂与繁琐的问题,采用一种简易的标定方法来求解单目相机的相机参数。 该方法在平面张正友标定方法的基础上,通过预先估计部分相机参数的初值进而求解

理想针孔相机成像模型后,再进一步优化预估参数的方式,根据棋盘标定板的特征点的空间坐标与图像坐标的对应方程,利用奇异值分解和 Levenberg-Marquardt 优化的方法进行参数求解,从而避免求解繁杂的约束矩阵后再分别对相机参数进行求解的过程,达到直接求解相机参数的目的,优化求解过程,最终实现单目相机的相机标定。 实验结果表明,使用该方法标定的单目相机在物距一米以下时的标定误差能够满足绝大部分视觉与定位的应用需求,且该方法具有较好的稳定性和可行性。

Abstract:

Camera calibration is an essential basis for computer vision and reconstruction positioning,which is a critical bridge betweentwo-dimensional images and three - dimensional space. According to the regulation of traditional linear camera imaging and the idealpinhole camera imaging model,a simple calibration method is proposed to solve the camera parameters?

of the monocular camera,whichcan address the complex and tedious calculation problem based on the plane Zhengyou Zhang Calibration Method. The method is basedon the plane Zhengyou Zhang Calibration Method,which optimizes the predicted parameters by pre-estimating the initial values of somecamera parameters and solving the ideal pinhole camera imaging model. According to the equations of the spatial and image coordinatesof the checkerboard calibration board’s feature points,the singular value decomposition and Levenberg-Marquardt optimization methodsare used for parameter solution,which avoids the process of calculating the complicated constraint matrix before the camera parametersseparately,thus achieving the purpose of solving the camera parameters directly,while optimizing the solving process and finally realizingcamera calibration of monocular cameras. The experimental results show that the calibration error of the monocular camera calibrated withthe proposed method can satisfy most vision and positioning applications at object distances below one meter,with high stability and feasibility.

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