《计算机应用研究》|Application Research of Computers

一种计算机视频监控系统的精确标定算法

Precise calibration method for computer monitor system

免费全文下载 (已被下载 次)  
获取PDF全文
作者 刘宇,聂闻
机构 1.重庆大学 a.煤矿灾害动力学与控制国家重点实验室;b.西南资源开发及环境灾害控制工程教育部重点实验室,重庆 400044;2.重庆工程职业技术学院,重庆 400037
统计 摘要被查看 次,已被下载
文章编号 1001-3695(2011)12-4748-04
DOI 10.3969/j.issn.1001-3695.2011.12.093
摘要 通过对整个计算机监控系统的误差源进行详细分析,将这些误差划分为制造误差、测量误差、计算误差三大类。在此基础上,提出了一种高精度的标定方法。此方法将标定过程明确划分为标定数据的提取、标定模型的建立、摄像机内外参数的计算和优化、畸变校正四个阶段。随着标定过程的推进,先后对图像像素量化噪声误差、图像坐标轴正交误差、不对心误差、镜头的径向畸变误差和切向畸变误差进行了修正。实验结果表明,标定方法非常精确,最后的标定总误差被控制在0.06个像素单位以内。
关键词 量化噪声;正交误差;径向畸变;切向畸变
基金项目 国家自然科学基金资助项目(50974141);国家科技重大专项资助项目(2008ZX05034-002);国家自然科学基金重点资助项目(50534080)
本文URL http://www.arocmag.com/article/1001-3695(2011)12-4748-04.html
英文标题 Precise calibration method for computer monitor system
作者英文名 LIU Yu, NIE Wen
机构英文名 1. a. State Key Laboratory of Coal Mine Disaster Dynamics & Control, b. Key Laboratory of Exploitation of Southwest Resource & Environmental Hazards Control Engineering for Ministry of Education, Chongqing University, Chongqing 400044, China; 2. Chongqing V
英文摘要 This paper analyzed the error sources of computer monitor system. All of them could be divided into 3 sorts: manufacture error, measurement error and computation error. Then, presented a precise calibration method. Calibration procedure was described by 4 steps: extracting calibration data, fitting camera model, computing and optimizing both camera intrinsic and extrinsic parameters, correcting distortion. Quantization noise of pixels, orthogonal error of image axes, asymmetric error, radial distortion and tanlggential distortion of lens were corrected along with executing calibrition. Experiment results show that this method is precise. Sum of all errors can be controlled within 005 pixels.
英文关键词 quantization noise; orthogonal error; radial distortion; tanlggential distortion
参考文献 查看稿件参考文献
 
收稿日期
修回日期
页码 4748-4751
中图分类号
文献标志码 A