摘要
在基于相机的众多应用场合中,对相机内外参数与镜头畸变参数的标定是关键环节,确定其标定过程的简易操作及标定结果的精度至关重要。与面阵相机相比,线阵相机的标定过程较为复杂。介绍了适合线阵相机的成像几何模型和镜头畸变模型,总结了线阵相机标定的一般流程,归纳分析了文献中基于静态成像和动态扫描成像的标定方法,并对其特点作出了简要评价。
Calibration of the intrinsic and extrinsic parameters of a camera as well as the lens distortion parameters is a crucial step in many camera-based vision applications.Further,ensuring the simple operation of the calibration process and the accuracy of the calibration results is critical.The calibration process of the line-scan cameras is more complicated when compared with that of the area-scan cameras.Herein,the imaging geometric model and the lens distortion model,which are suitable in case of line-scan cameras,are described;subsequently,the general calibration procedure of the line-scan camera is summarized.Furthermore,the calibration methods that have been previously proposed in the literature based on static imaging and dynamic scanning imaging are classified and analyzed,and their characteristics are briefly reviewed.
作者
王国珲
钱克矛
Wang Guohui;Qian Kemao(School of Optoelectronic Engineering,Xi′an Technological University,Xi′an,Shaanxi 710021,China;School of Computer Science and Engineering,Nanyang Technological University,Singapore 639798,Singapore)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2020年第1期175-187,共13页
Acta Optica Sinica
基金
西安市智能探视感知重点实验室项目(201805061ZD12CG45)
西安工业大学陕西省光电测试与仪器技术重点实验室开放基金(2016SZSJ-60-1)。
关键词
成像系统
标定
线阵相机
相机成像模型
镜头畸变模型
非线性优化
交比不变性
imaging systems
calibration
line-scan camera
camera imaging model
lens distortion model
non-linear optimization
cross-ratio invariance