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基于一维标定物的多摄像机标定 被引量:38

Multi-Camera Calibration Based on 1D Calibration Object
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摘要 一维标定物是由三个或三个以上彼此距离已知的共线点构成的.现有文献指出只有当一维标定物做平面运动或者绕固定点转动时,才能实现摄像机的标定.本文的研究结果表明,当多个摄像机同时观察作任意刚体运动的一维标定物时,则该摄像机组能被线性地标定.本文给出一种线性标定算法,并使用最大似然准则对线性算法结果进行精化.模拟实验和真实图像实验都表明本文的算法是有效可行的. A one-dimensional calibration object consists of three or more collinear points with known relative positions. It is generally believed that a camera can be calibrated only when a 1D calibration object is in planar motion or rotates around a fixed point. In this paper, it is proved that when a multi-camera is observing a 1D object undergoing general rigid motions synchronously, the camera set can be linearly calibrated. A linear algorithm for the camera set calibration is proposed, and then the linear estimation is further refined using the maximum likelihood criteria. The simulated and real image experiments show that the proposed algorithm is valid and robust.
作者 王亮 吴福朝
出处 《自动化学报》 EI CSCD 北大核心 2007年第3期225-231,共7页 Acta Automatica Sinica
基金 国家自然科学基金(60575019) 国家"863"计划(2006AA01Z116 2005AA118020)资助~~
关键词 一维标定物 多摄像机标定 任意刚体运动 1D calibration object, multiple cameras calibration, general rigid motion
作者简介 王亮 中国科学院自动化研究所博士研究生.分别于2001、2004年在哈尔滨工程大学获得学士和硕士学位,主要研究方向为摄像机标定、三维重建、移动机器人.E-mail:wangliang@nlpr.ia.ac.cn 吴福朝 中国科学院自动化所研究员,博士生导师,主要研究领域为计算机视觉、人工智能、模式识别.本文通信作者.E-mail:fcwu@nlpr.ia.ac.cn
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参考文献18

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