A Rotation Based Sorting Method for the Feature Points Abstracted from Skew Calibration Image

During camera calibration, the calibration pattern image is always skew. This brings much difficult to feature points sorting, which affects calibration accuracy. In this study, a rotation based sorting method is proposed. First, detect the skew angle accurately; then, transform the original coordin...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 427-429; no. Mechanical Engineering, Industrial Electronics and Information Technology Applications in Industry; pp. 1939 - 1943
Main Authors Chen, Sui Yang, Bian, Qian, Liu, Yang Chuan
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.09.2013
Subjects
Calibration
Cameras
Feasibility
Mapping
Skew angle
Sorting
Transforms
Camera Calibration
Skew Image
Rotation
Feature Point
Sorting
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Summary:During camera calibration, the calibration pattern image is always skew. This brings much difficult to feature points sorting, which affects calibration accuracy. In this study, a rotation based sorting method is proposed. First, detect the skew angle accurately; then, transform the original coordinates to the rotated coordinates and establish the mapping relation; then, sort the rotated coordinates; finally, sort the original coordinates using the mapping relation. To verify the feasibility of this method, an experiment is carried out. The result shows that the rotation based sorting method can sort the feature points accurately at different skew angles. Its accuracy makes this method suitable for high accurate camera calibration.
Bibliography:Selected, peer reviewed papers from the 2013 2nd International Conference on Mechanical Engineering, Industrial Electronics and Informatization (MEIEI 2013), September 14-15, 2013, Chongqing, China
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISBN:9783037858905
3037858907
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.427-429.1939