A Practical Roadside Camera Calibration Method Based on Least Squares Optimization

CORC > 自动化研究所 > 中国科学院自动化研究所 > 智能制造技术与系统研究中心 > 多维数据分析团队

	A Practical Roadside Camera Calibration Method Based on Least Squares Optimization
	Zheng, Yuan; Peng, Silong
刊名	IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
	2014-04-01
卷号	15 期号:2 页码:831-843
关键词	Camera calibration least squares (LS) optimization roadside camera traffic surveillance vanishing line vanishing point
英文摘要	In this paper, we propose a more practical and accurate method for calibrating the roadside camera used in traffic surveillance systems. Considering the characteristics of the traffic scenes, we propose a minimum calibration condition that consists of two vanishing points and a vanishing line, which can be easily satisfied in most traffic scenes. Based on the minimum calibration condition, we provide a calibration method to estimate camera intrinsic parameters and rotation angles, which employs least squares optimization instead of closed-form computation. Compared with the existing calibration methods, our method is suitable for more traffic scenes and is able to accurately determine more camera parameters including the principal point. By making full use of video information, multiple observations of the vanishing points are available from different objects. For more accurate calibration, we present a dynamic calibration method using these observations to correct camera parameters. As for the estimation of the camera translation vector, known lengths in the road or known heights above the road are exploited. The experimental results on synthetic data and real traffic images demonstrate the accuracy, robustness, and practicability of the proposed calibration method.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Civil ; Engineering, Electrical & Electronic ; Transportation Science & Technology
研究领域[WOS]	Engineering ; Transportation
关键词[WOS]	VANISHING-POINT DETECTION ; IMAGE
收录类别	SCI
语种	英语
WOS记录号	WOS:000334584800033
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/2909]
专题	自动化研究所_智能制造技术与系统研究中心_多维数据分析团队
作者单位	Chinese Acad Sci, Hitech Innovat Engn Ctr, Inst Automat, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Yuan,Peng, Silong. A Practical Roadside Camera Calibration Method Based on Least Squares Optimization[J]. IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS,2014,15(2):831-843.
APA	Zheng, Yuan,&Peng, Silong.(2014).A Practical Roadside Camera Calibration Method Based on Least Squares Optimization.IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS,15(2),831-843.
MLA	Zheng, Yuan,et al."A Practical Roadside Camera Calibration Method Based on Least Squares Optimization".IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS 15.2(2014):831-843.