.png){kind=icon}
返回
A Novel Global Camera Calibration Method Based on Flexible Multidirectional Target
.png){kind=icon}
PRE
AI
DOI：10.1109/TIM.2023.3281564.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Multiviewpoint or multisensor 3-D vision measurement is widely applied for large-scale measurement. The global coordinates of multiple local measurement coordinates during the measurement process are often unified by using a global camera. However, the parameters of the global camera are easily affected by external factors such as vibrations and lighting, which can reduce the 3-D reconstruction accuracy during the unification process. Therefore, it is necessary to use calibration targets to calibrate the parameters of the global camera. However, due to the field of view (FOV) limitation of the global camera, the size of the calibration target needs to be strictly controlled. Manufacturing large and high-precision targets is difficult. The accuracy of large targets is not easy to guarantee, and using large targets can easily exceed the FOV of the global camera. In contrast, small and high-precision targets only occupy a small part of the image, which leads to a decrease in the accuracy of camera calibration. To solve this problem, a novel camera calibration method based on a flexible multidirectional target (FMT) is proposed. The designed FMT consists of co- planar small targets (CSTs) and a polyhedral skeleton. The FMT is placed in the FOV of the global camera, and target images are collected from multiple angles. An automatic corner extraction algorithm and an optimization algorithm are proposed based on the topological correspondence between the 2-D coordinates of the corners in the image and the 3-D coordinates of the corners in Euclidean space. These algorithms are used to calculate the parameters and distortion coefficients of the global camera. The algorithm is evaluated through real experiments. The experimental results show that using FMT can improve the measurement accuracy by 83% compared with using chessboard targets, confirming the effectiveness of the algorithm.
Keyword:
Camera calibration
camera parameter
corners
coplanar small target (CST)
flexible multidirectional target (FMT)
期刊
IF:
5.9
论文数:
2.0W
被引数:
5.8W
机构
引用论文
A calibration method for binocular stereo vision sensor with short-baseline based on 3D flexible control field基于三维柔性控制场的短基线双目立体视觉传感器标定方法
.png){kind=icon}
PREAI
分享收藏A Calibration and 3-D Measurement Method for an Active Vision System With Symmetric Yawing Cameras对称偏航相机主动视觉系统的标定和三维测量方法
PREAI
分享收藏Multiconstraint Spatial and Temporal Calibration of Rotating Line Structured Light Vision Sensor
PREAI
分享收藏Keypoint-Based LiDAR-Camera Online Calibration With Robust Geometric Network基于关键点的鲁棒几何网络激光雷达-摄像机在线标定
PREAI
分享收藏Camera calibration using synthetic random speckle pattern and digital image correlation基于合成随机散斑和数字图像相关的摄像机标定
PREAI
分享收藏Generalized Adiabatic Polaron Hopping: Meyer-Neldel Compensation and Poole-Frenkel Behavior广义绝热极化子跳跃: meyer-neldel补偿和Poole-Frenkel行为
PREAI
分享收藏分享收藏A Comprehensive Performance Evaluation of 3-D Transformation Estimation Techniques in Point Cloud Registration点云配准中三维变换估计技术的综合性能评价
PREAI
分享收藏
查看更多内容