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A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction
Joint Authors
Sun, Qiucheng
Hou, Yueqian
Tan, Qingchang
Li, Guannan
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-27
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Lens distortion practically presents in a real optical imaging system causing nonuniform geometric distortion in the images and gives rise to additional errors in the vision measurement.
In this paper, a planar-dimensions vision measurement method is proposed by improving camera calibration, in which the lens distortion is corrected on the pixel plane of image.
The method can be divided into three steps: firstly, the feature points, only in the small central region of the image, are used to get a more accurate perspective projection model; secondly, rather than defining a uniform model, the smoothing spline function is used to describe the lens distortion in the measurement region of image, and two correction functions can be obtained by fitting two deviation surfaces; finally, a measurement method for planar dimensions is proposed, in which accurate magnification factor of imaging system can be obtained by using the correction functions.
The effectiveness of the method is demonstrated by applying the proposed method to the test of measuring shaft diameter.
Experimental data prove that the accurate planar-dimensions measurements can be performed using the proposed method even if images are deformed by lens distortion.
American Psychological Association (APA)
Sun, Qiucheng& Hou, Yueqian& Tan, Qingchang& Li, Guannan. 2013. A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1033498
Modern Language Association (MLA)
Sun, Qiucheng…[et al.]. A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction. The Scientific World Journal No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-1033498
American Medical Association (AMA)
Sun, Qiucheng& Hou, Yueqian& Tan, Qingchang& Li, Guannan. A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-1033498
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1033498