matlab相机标定论文,基于MATLAB中calibration toolbox的相机标定应用研究

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(2)在主窗口中通过读取图片,可以获得所要标定的照片。

(3)获取角点。程序运行界面如图5所示。程序标定结果如下:

matlab相机标定论文,基于MATLAB中calibration toolbox的相机标定应用研究_第1张图片

%--Focal length:

fc=[3463.194803808018200;3807.341090056066200];

%--Principal point:

CC=[1633.861831663415600;1394.235351077526500];

%--Skew coeffICient:

alpha_c=0.000000000000000;

%--Distortion coefficients:

kc=[-0.208188511841198;0.035081678657317;0.0023875

81735940;0.000491712255333;0.000000000000000];

%-- Focal length uncertainty:

fc_error=[260.123743256455500;284.746622601852150];

%--Principal point uncertainty:

cc_error=[36.917650368224287;47.589021356646775];

%--Skew coefficient uncertainty:

alpha_c_error=0.000000000000000;

%--Distortion coefficients uncertainty:

kc_error=[0.031723675208984;0.077972615251388; 0.002

023682615518;0.001567520438212;0.000000000000000];

%--Image size:

nx=3280;

ny=2460;

%--Various other variables (may be ignored if you do not use the Matlab Calibration Toolbox):

%--Those variables are used to control which intrinsic parameters should be optimized

n_ima=12;

%Number of calibration images

est_fc=[1;1];

%Estimation inDICator of the two focal variables

est_aspect_ratio=1;

% Estimation indicator of the aspect ratio fc(2)/fc(1)

center_optim=1;

% Estimation indicator of the principal point

est_alpha=0;

% Estimation indicator of the skew coefficient

est_dist=[1;1;1;1;0];

%Estimation indicator of the distortion coefficientspoint

est_alpha=0;

% Estimation indicator of the skew coefficient

est_dist=[1;1;1;1;0];

% Estimation indicator of the distortion coefficients

从实验可以看出,使用MATLAB中的标定工具箱可以很快地得到标定结果,操作简单易懂,可视化效果好,对结果误差、畸变等可以图像的方式显示。

参考文献

[1] 张广军.视觉测量[M].北京:科学出版社,2008.

[2] 吴福朝.计算机视觉中的数学方法[M]. 北京:科学出版社,2008.

[3] ROGER Y. TSAI. A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV cameras and lenses[J]. IEEE Journal of  robotics and automation, 1987,RA-3(4):323-344.

[4] TSAI R Y. An efficient and accurate camera calibration technique for 3D machine vision[M]. Proc. of IEEE Conference of computer Vision and Pattern Recognition, 1986:364-374.

[5] ZHANG Z Y. Flexible camera calibration by viewing a plane from unknown orientations[C].In: Proceedings of the International Conference on Computer Vision (ICCV’99),1999:666-673.

[6] 靳志光,卫建东,张冠宇,等.基于LCD的相机标定新方法[J].遥感应用, 2008,1:87-90.

[7] Meng Xiaoqiao, Hu Zhanyi. A new easy camera calibration technique based on circular points[J]. pattern recognition, 2003,36(5):1155-1164.

[8] WU Y H, ZHU H J, HU Z Y, et al. Camera calibration from the quasi-affine invariance of two parallel circles[C]. In Proc. European Conference on Computer Vision(ECCV’2004), 2004,I:190-202.

[9] 徐德,赵晓光,涂志国,等.基于单特征点的手眼系统摄像机标定[J].IEEE Transtration on Pattern Analysis and Machine Intelligence, 2000,22(11):1330-1334.

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