NDLI: Point-based calibration using a parametric representation of the general imaging model

Content Provider	IEEE Xplore Digital Library
Author	Miraldo, P. Araujo, H. Queiro, J.
Copyright Year	2011
Description	Author affiliation: Institute for Systems and Robotics, Department of Electrical and Computer Engineering-Polo 2, University of Coimbra, 3030-290, Portugal (Miraldo, P.; Araujo, H.) \|\| Department of Mathematics, University of Coimbra, 3001-454, Portugal (Queiro, J.)
Abstract	Generic imaging models can be used to represent any camera. These models are specially suited for non-central cameras for which closed-form models do not exist. Current models are discrete and define a mapping between each pixel in the image and a straight line in 3D space. Due to difficulties in the calibration procedure and model complexity these methods have not been used in practice. The focus of our work was to relax these drawbacks. In this paper we modify the general imaging model using radial basis functions to interpolate image coordinates and 3D lines allowing both an increase in resolution (due to their continuous nature) and a more compact representation. Using this new variation of the general imaging model we also develop a new linear calibration procedure. In this process it is only required to match one 3D point to each image pixel. Also it is not required the calibration of every image pixel. As a result the complexity of the procedure is significantly decreased.
Starting Page	2304
Ending Page	2311
File Size	2270238
Page Count	8
File Format	PDF
ISBN	9781457711015
ISSN	15505499
e-ISBN	9781457711022
DOI	10.1109/ICCV.2011.6126511
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Mathematical model Cameras Equations Three dimensional displays Vectors
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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