Calibrating effective focal length for central catadioptric cameras using one space line
文献类型：期刊论文
| 作者 | Duan, Fuqing1; Wu, Fuchao2 ; Zhou, Mingquan1; Deng, Xiaoming2,3; Tian, Yun1
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| 刊名 | PATTERN RECOGNITION LETTERS
 |
| 出版日期 | 2012-04-01 |
| 卷号 | 33期号:5页码:646-653 |
| 关键词 | Camera calibration Central catadioptric camera Focal length estimation |
| 英文摘要 | In camera calibration, focal length is the most important parameter to be estimated, while other parameters can be obtained by prior information about scene or system configuration. In this paper, we present a polynomial constraint on the effective focal length with the condition that all the other parameters are known. The polynomial degree is 4 for paracatadioptric cameras and 16 for other catadioptric cameras. However, if the skew is 0 or the ratio between the skew and effective focal length is known, the constraint becomes a linear one or a polynomial one with degree 4 on the effective focal length square for paracatadioptric cameras and other catadioptric cameras, respectively. Based on this constraint, we propose a simple method for estimation of the effective focal length of central catadioptric cameras. Unlike many approaches using lines in literature, the proposed method needs no conic fitting of line images, which is error-prone and highly affects the calibration accuracy. It is easy to implement, and only a single view of one space line is enough with no other space information needed. Experiments on simulated and real data show this method is robust and effective. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Computer Science, Artificial Intelligence |
| 研究领域[WOS] | Computer Science |
| 关键词[WOS] | GEOMETRIC-PROPERTIES ; IMAGES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000301212400019 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/2995]  |
| 专题 | 自动化研究所_模式识别国家重点实验室_机器人视觉团队 |
| 作者单位 | 1.Beijing Normal Univ, Coll Informat Sci & Technol, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Inst Software, Lab Human Comp Interact & Intelligent Informat Pr, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Duan, Fuqing,Wu, Fuchao,Zhou, Mingquan,et al. Calibrating effective focal length for central catadioptric cameras using one space line[J]. PATTERN RECOGNITION LETTERS,2012,33(5):646-653. |
| APA | Duan, Fuqing,Wu, Fuchao,Zhou, Mingquan,Deng, Xiaoming,&Tian, Yun.(2012).Calibrating effective focal length for central catadioptric cameras using one space line.PATTERN RECOGNITION LETTERS,33(5),646-653. |
| MLA | Duan, Fuqing,et al."Calibrating effective focal length for central catadioptric cameras using one space line".PATTERN RECOGNITION LETTERS 33.5(2012):646-653. |
入库方式： OAI收割
来源：自动化研究所
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