An accurate calibration method of a multi camera system

作者：Han, Song; Gu, Xiaojing; Gu, Xingsheng^*

来源：International Conference on Life System Modeling and Simulation, LSMS 2017 and International Conference on Intelligent Computing for Sustainable Energy and Environment, ICSEE 2017, 2017-09-22 To 2017-09-24.

DOI：10.1007/978-981-10-6370-1_49

• Camera calibration
• Geometric calibrations
• Imaging characteristics
• Multicamera systems
• Nonuniformity correction
• Rgb-d cameras
• Thermal camera
• Traditional calibration

In this paper, we proposed a novel method of geometric calibration and synchronization for a multi camera system. Traditional calibration methods of visible cameras can’t be applied to thermal cameras. According to the imaging characteristics of thermal cameras, we designed a new calibration board using materials with different emissivity for calibration. Our calibration board can accurately calibrate RGBD cameras and thermal cameras. In general, thermal cameras have regular non-uniformity corrections, which will result in camera interruption about 1.5 to 2 s and can impact synchronization. In this respect, we adopted the method named nearest adjacent time using timestamp to solve the problem of non-uniformity corrections and synchronization. We evaluated our methods and the experiments showed that our methods had an ideal result for camera calibration and synchronization.

• 出版日期2017
• 单位华东理工大学