北京交通大学学报2017，Vol.41Issue(2)：8-14,7.DOI:10.11860/j.issn.1673-0291.2017.02.002
边缘直线拟合确定鱼眼镜头光心算法
An algorithm to determine the fish-eye lens optical center using edge straight-line-fitting
摘要
Abstract
In order to remove the distortion in fish-eye image,the camera calibration is required.We put forward an algorithm to determine fish-eye lens optical center using the edge straight-linefitting technology with a given camera parameters table.This algorithm utilizes the physical size of each pixel in the image plane as well as the camera focal length.Therefore,the scale factor in horizontal and vertical axes of the reference matrix can be determined.With some provided parameters,the optic center can be determined by traversing the pixel coordinates within given range.The optic center,which made the weighted distance between corrected points and fitted straight lines smallest,is needed.Experimental results show that compared with the conventional camera calibration algorithm,this algorithm reduces the accumulation of errors due to the using of inaccurate parameters and makes the calibration results more accurate.关键词
信息处理/标定/光心坐标/边缘直线拟合/坐标变换/畸变/鱼眼镜头Key words
information processing/calibration/optic center coordinate/edge straight-line-fitting/coordinate transformation/distortion/fish-eye lens分类
信息技术与安全科学引用本文复制引用
林春雨,高奕,王欣,黄奇,王鑫,赵耀..边缘直线拟合确定鱼眼镜头光心算法[J].北京交通大学学报,2017,41(2):8-14,7.基金项目
国家自然科学基金(61402034,61210006,61501379) （61402034,61210006,61501379）
中央高校基本科研业务费专项资金(2015JBM032,2015JBZ002)National Natural Science Foundation of China(61402034,61210006,61501379) （2015JBM032,2015JBZ002）
Fundamental Research Funds for the Central Universities (2015JBM032,2015JBZ002) （2015JBM032,2015JBZ002）
