Precise measurement for line structure light vision sensor with large range
Abstract High precision and large measurement range are the target of any one three-dimensional scanner. For a line structure light vision sensor, measurement precision depends on its calibration results, i.e., determining mathematical expression of the light plane in camera coordinate system. Howev...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-34428-w |
| _version_ | 1827952815155183616 |
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| author | Wei-wei Sheng |
| author_facet | Wei-wei Sheng |
| author_sort | Wei-wei Sheng |
| collection | DOAJ |
| description | Abstract High precision and large measurement range are the target of any one three-dimensional scanner. For a line structure light vision sensor, measurement precision depends on its calibration results, i.e., determining mathematical expression of the light plane in camera coordinate system. However, as calibration results are locally optimal solutions, high precise measurement in a large range is difficult. In this paper, we give a precise measurement method and the corresponding calibration procedure for a line structure light vision sensor with a large measurement range. A motorized linear translation stages with a travel range of 150 mm and a planar target which is a surface plate with a machining precision of 0.05 mm are utilized. With the help of the linear translation stage and the planar target, functions which gives the relationship between center point of the laser stripe and the perpendicular/ horizontal distance are obtained. Once image of light stripe is captured, we can get a precise measurement result from the normalized feature points. Compared with a traditional measurement method, distortion compensation is not necessary and precision of measurement is improved significantly. Experiments show that root mean square error of measurement results according to our proposed method is reduced by 64.67% related to the traditional method. |
| first_indexed | 2024-04-09T14:03:32Z |
| format | Article |
| id | doaj.art-9e2d49bc67ad4d96823801eb99752ece |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T14:03:32Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-9e2d49bc67ad4d96823801eb99752ece2023-05-07T11:10:14ZengNature PortfolioScientific Reports2045-23222023-05-0113111110.1038/s41598-023-34428-wPrecise measurement for line structure light vision sensor with large rangeWei-wei Sheng0School of Science, Qingdao University of TechnologyAbstract High precision and large measurement range are the target of any one three-dimensional scanner. For a line structure light vision sensor, measurement precision depends on its calibration results, i.e., determining mathematical expression of the light plane in camera coordinate system. However, as calibration results are locally optimal solutions, high precise measurement in a large range is difficult. In this paper, we give a precise measurement method and the corresponding calibration procedure for a line structure light vision sensor with a large measurement range. A motorized linear translation stages with a travel range of 150 mm and a planar target which is a surface plate with a machining precision of 0.05 mm are utilized. With the help of the linear translation stage and the planar target, functions which gives the relationship between center point of the laser stripe and the perpendicular/ horizontal distance are obtained. Once image of light stripe is captured, we can get a precise measurement result from the normalized feature points. Compared with a traditional measurement method, distortion compensation is not necessary and precision of measurement is improved significantly. Experiments show that root mean square error of measurement results according to our proposed method is reduced by 64.67% related to the traditional method.https://doi.org/10.1038/s41598-023-34428-w |
| spellingShingle | Wei-wei Sheng Precise measurement for line structure light vision sensor with large range Scientific Reports |
| title | Precise measurement for line structure light vision sensor with large range |
| title_full | Precise measurement for line structure light vision sensor with large range |
| title_fullStr | Precise measurement for line structure light vision sensor with large range |
| title_full_unstemmed | Precise measurement for line structure light vision sensor with large range |
| title_short | Precise measurement for line structure light vision sensor with large range |
| title_sort | precise measurement for line structure light vision sensor with large range |
| url | https://doi.org/10.1038/s41598-023-34428-w |
| work_keys_str_mv | AT weiweisheng precisemeasurementforlinestructurelightvisionsensorwithlargerange |