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Radial distortion invariants and lens evaluation under a single-optical-axis omnidirectional camera
Wu, Yihong1; Hu, Zhanyi1; Li, Youfu2
Source PublicationCOMPUTER VISION AND IMAGE UNDERSTANDING
2014-09-01
Volume126Pages:11-27
SubtypeArticle
AbstractThis paper presents radial distortion invariants and their application to lens evaluation under a single-optical-axis omnidirectional camera. Little work on geometric invariants of distorted images has been reported previously. We establish accurate geometric invariants from 2-dimensional/3-dimensional space points and their radially distorted image points. Based on the established invariants in a single image, we construct criterion functions and then design a feature vector for evaluating the camera lens, where the infinity norm of the feature vector is computed to indicate the tangent distortion amount. The evaluation is simple and convenient thanks to the feature vector that is analytical and straightforward on image points and space points without any other computations. In addition, the evaluation is flexible since the used invariants make any a coordinate system of measuring space or image points workable. Moreover, the constructed feature vector is free of point orders and resistant to noise. The established invariants in the paper have other potential applications such as camera calibration, image rectification, structure reconstruction, image matching, and object recognition. Extensive experiments, including on structure reconstruction, demonstrate the usefulness, higher accuracy, and higher stability of the present work. (C) 2014 Elsevier Inc. All rights reserved.
KeywordGeometric Invariant Omnidirectional Camera Tangent Distortion Evaluation
WOS HeadingsScience & Technology ; Technology
WOS KeywordWIDE-ANGLE ; CALIBRATION ; GEOMETRY
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS IDWOS:000339646800002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/2973
Collection模式识别国家重点实验室_机器人视觉
Affiliation1.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China
2.City Univ Hong Kong, Dept Mech & Biomed Engn, Kowloon, Hong Kong, Peoples R China
First Author AffilicationChinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yihong,Hu, Zhanyi,Li, Youfu. Radial distortion invariants and lens evaluation under a single-optical-axis omnidirectional camera[J]. COMPUTER VISION AND IMAGE UNDERSTANDING,2014,126:11-27.
APA Wu, Yihong,Hu, Zhanyi,&Li, Youfu.(2014).Radial distortion invariants and lens evaluation under a single-optical-axis omnidirectional camera.COMPUTER VISION AND IMAGE UNDERSTANDING,126,11-27.
MLA Wu, Yihong,et al."Radial distortion invariants and lens evaluation under a single-optical-axis omnidirectional camera".COMPUTER VISION AND IMAGE UNDERSTANDING 126(2014):11-27.
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