文献类型：会议论文

英文题名：An Accurate Calibration Method of a Multi Camera System

作者：Han, Song[1];Gu, Xiaojing[1];Gu, Xingsheng[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Adv Control & Optimizat Chem Proc, Shanghai, Peoples R China

会议论文集：International Conference on Life System Modeling and Simulation (LSMS) / International Conference on Intelligent Computing for Sustainable Energy and Environment (ICSEE)

会议日期：SEP 22-24, 2017

会议地点：Nanjing, PEOPLES R CHINA

语种：英文

外文关键词：Multi camera system; Thermal cameras; RGBD cameras; Calibration; Synchronization

摘要：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.