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IMPLICIT AND EXPLICIT CAMERA CALIBRATION - THEORY AND EXPERIMENTS
WEI, GQ; DEMA, S
1994-05-01
发表期刊IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
卷号16期号:5页码:469-480
文章类型Article
摘要By implicit camera calibration, we mean the process of calibrating a camera without explicitly computing its physical parameters. Implicit calibration can be used for both three-dimensional (3-D) measurement and generation of image coordinates. In this paper, we present a new implicit model based on the generalized projective mappings between the image plane and two calibration planes. The back-projection and projection processes are modelled separately to ease the computation of distorted image coordinates from known world points. A set of constraints of perspectivity is derived to relate the transformation parameters of the two calibration planes. Under the assumption of the radial distortion model, we present a computationally efficient method for explicitly correcting the distortion of image coordinates in frame buffer without involving the computation of camera position and orientation. By combining with any linear calibration techniques, this method makes explicit the camera physical parameters. Extensive experimental comparison of our methods with the classic photogrammetric method and Tsai's method in the aspects of 3-D measurement (both absolute and relative errors), the prediction of image coordinates, and the effect of the number of calibration points, is made using real images from 15 different depth values.
关键词Projective Mapping Back-projection Projection Implicit Distortion Compensation Perspectivity Conditions Projective Invariants Explicit Distortion Correction
WOS标题词Science & Technology ; Technology
收录类别SCI
语种英语
WOS研究方向Computer Science ; Engineering
WOS类目Computer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS记录号WOS:A1994NP14100003
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文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/21887
专题09年以前成果
作者单位CHINESE ACAD SCI,INST AUTOMAT,NATL LAB PATTERN RECOGNIT,BEIJING 100080,PEOPLES R CHINA
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WEI, GQ,DEMA, S. IMPLICIT AND EXPLICIT CAMERA CALIBRATION - THEORY AND EXPERIMENTS[J]. IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE,1994,16(5):469-480.
APA WEI, GQ,&DEMA, S.(1994).IMPLICIT AND EXPLICIT CAMERA CALIBRATION - THEORY AND EXPERIMENTS.IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE,16(5),469-480.
MLA WEI, GQ,et al."IMPLICIT AND EXPLICIT CAMERA CALIBRATION - THEORY AND EXPERIMENTS".IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE 16.5(1994):469-480.
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