东南大学学报（自然科学版）2012，Vol.42Issue(z1)：41-44,4.DOI:10.3969/j.issn.1001-0505.2012.S1.009
基于极坐标的摄像机标定
Camera calibration based on polar coordinate
摘要
Abstract
In order to improve the flexibility of multi-camera calibration and the diversity of calibration boards, the polar coordinate system is used to design the calibration board, and the camera calibration is based on the board. The feature points in the world coordinate are assigned by the designed board, and the positions of the feature points in the image coordinate are identified accordingly. The camera are calibrated after mapping the positions of the feature points in the image coordinate and the world coordinate. The calibration method only requires small sets of correspondences ( about 20 pairs) , and, meanwhile, it can ensure the accuracy and robustness. Small sets of correspondences and the diversity of images can avoid the blocking and inadequate public spaces for multi-camera calibration, which is helpful for the multi-camera calibration. It is more flexible than the traditional multi-camera calibration on the distribution of cameras and boards. Compared with the traditional method with accurate board, the calibration board design and the calibration system are simpler to achieve and they can also ensure the accuracy.关键词
摄像机标定/极坐标/多摄像机标定/平面标定板/机器视觉Key words
camera calibration/ polar coordinate/ multi-camera calibration/ flexible planar pattern/ machine vision分类
信息技术与安全科学引用本文复制引用
方旭,达飞鹏,郭涛..基于极坐标的摄像机标定[J].东南大学学报（自然科学版）,2012,42(z1):41-44,4.基金项目
国家自然科学基金资助项目(51175081,61107001)、江苏省自然科学基金资助项目(BK2010058). （51175081,61107001）
