A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction
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 whic...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/963621 |
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| author | Qiucheng Sun Yueqian Hou Qingchang Tan Guannan Li |
| author_facet | Qiucheng Sun Yueqian Hou Qingchang Tan Guannan Li |
| author_sort | Qiucheng Sun |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-ee45b68e1a6c4208ac5afcb31591b730 |
| institution | DOAJ |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-ee45b68e1a6c4208ac5afcb31591b7302025-08-20T03:20:43ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/963621963621A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion CorrectionQiucheng Sun0Yueqian Hou1Qingchang Tan2Guannan Li3College of Basic Science, Changchun University of Technology, Yanan Street 2055, Changchun 130012, ChinaCollege of Mechanical Science and Engineering, Changchun University, Changchun 130012, ChinaCollege of Mechanical Science and Engineering, Jilin University, Changchun 130012, ChinaCollege of Mechanical Science and Engineering, Jilin University, Changchun 130012, ChinaLens 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.http://dx.doi.org/10.1155/2013/963621 |
| spellingShingle | Qiucheng Sun Yueqian Hou Qingchang Tan Guannan Li A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction The Scientific World Journal |
| title | A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction |
| title_full | A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction |
| title_fullStr | A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction |
| title_full_unstemmed | A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction |
| title_short | A Planar-Dimensions Machine Vision Measurement Method Based on Lens Distortion Correction |
| title_sort | planar dimensions machine vision measurement method based on lens distortion correction |
| url | http://dx.doi.org/10.1155/2013/963621 |
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