CASIA OpenIR  > 09年以前成果
IMPLICIT AND EXPLICIT CAMERA CALIBRATION - THEORY AND EXPERIMENTS
WEI, GQ; DEMA, S
Source PublicationIEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
1994-05-01
Volume16Issue:5Pages:469-480
SubtypeArticle
AbstractBy 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.
KeywordProjective Mapping Back-projection Projection Implicit Distortion Compensation Perspectivity Conditions Projective Invariants Explicit Distortion Correction
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS IDWOS:A1994NP14100003
Citation statistics
Cited Times:175[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/21887
Collection09年以前成果
AffiliationCHINESE ACAD SCI,INST AUTOMAT,NATL LAB PATTERN RECOGNIT,BEIJING 100080,PEOPLES R CHINA
Recommended Citation
GB/T 7714
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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