Linear Laser Scanning Measurement Method Tracking by a Binocular Vision
The 3D scanning of a freeform structure relies on the laser probe and the localization system. The localization system, determining the effect of the point cloud reconstruction, will generate positioning errors when the laser probe works in complex paths with a fast speed. To reduce the errors, in t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/9/3572 |
| _version_ | 1797502745434914816 |
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| author | Chunyan Wu Li Yang Zai Luo Wensong Jiang |
| author_facet | Chunyan Wu Li Yang Zai Luo Wensong Jiang |
| author_sort | Chunyan Wu |
| collection | DOAJ |
| description | The 3D scanning of a freeform structure relies on the laser probe and the localization system. The localization system, determining the effect of the point cloud reconstruction, will generate positioning errors when the laser probe works in complex paths with a fast speed. To reduce the errors, in this paper, a linear laser scanning measurement method is proposed based on binocular vision calibration. A simple and effective eight-point positioning marker attached to the scanner is proposed to complete the positioning and tracking procedure. Based on this, the method of marked point detection based on image moment and the principle of global coordinate system calibration are introduced in detail. According to the invariance principle of space distance, the corresponding points matching method between different coordinate systems is designed. The experimental results show that the binocular vision system can complete localization under different light intensities and complex environments, and that the repeated translation error of the binocular vision system is less than 0.22 mm, while the rotation error is less than 0.15°. The repeated error of the measurement system is less than 0.36 mm, which can meet the requirements of the 3D shape measurement of the complex workpiece. |
| first_indexed | 2024-03-10T03:40:30Z |
| format | Article |
| id | doaj.art-d864b3e097a54a829d999c4f16e67245 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:40:30Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-d864b3e097a54a829d999c4f16e672452023-11-23T09:20:23ZengMDPI AGSensors1424-82202022-05-01229357210.3390/s22093572Linear Laser Scanning Measurement Method Tracking by a Binocular VisionChunyan Wu0Li Yang1Zai Luo2Wensong Jiang3College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Information Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaThe 3D scanning of a freeform structure relies on the laser probe and the localization system. The localization system, determining the effect of the point cloud reconstruction, will generate positioning errors when the laser probe works in complex paths with a fast speed. To reduce the errors, in this paper, a linear laser scanning measurement method is proposed based on binocular vision calibration. A simple and effective eight-point positioning marker attached to the scanner is proposed to complete the positioning and tracking procedure. Based on this, the method of marked point detection based on image moment and the principle of global coordinate system calibration are introduced in detail. According to the invariance principle of space distance, the corresponding points matching method between different coordinate systems is designed. The experimental results show that the binocular vision system can complete localization under different light intensities and complex environments, and that the repeated translation error of the binocular vision system is less than 0.22 mm, while the rotation error is less than 0.15°. The repeated error of the measurement system is less than 0.36 mm, which can meet the requirements of the 3D shape measurement of the complex workpiece.https://www.mdpi.com/1424-8220/22/9/3572stereo vision3D metrologycalibrationhybrid measurementlaser |
| spellingShingle | Chunyan Wu Li Yang Zai Luo Wensong Jiang Linear Laser Scanning Measurement Method Tracking by a Binocular Vision Sensors stereo vision 3D metrology calibration hybrid measurement laser |
| title | Linear Laser Scanning Measurement Method Tracking by a Binocular Vision |
| title_full | Linear Laser Scanning Measurement Method Tracking by a Binocular Vision |
| title_fullStr | Linear Laser Scanning Measurement Method Tracking by a Binocular Vision |
| title_full_unstemmed | Linear Laser Scanning Measurement Method Tracking by a Binocular Vision |
| title_short | Linear Laser Scanning Measurement Method Tracking by a Binocular Vision |
| title_sort | linear laser scanning measurement method tracking by a binocular vision |
| topic | stereo vision 3D metrology calibration hybrid measurement laser |
| url | https://www.mdpi.com/1424-8220/22/9/3572 |
| work_keys_str_mv | AT chunyanwu linearlaserscanningmeasurementmethodtrackingbyabinocularvision AT liyang linearlaserscanningmeasurementmethodtrackingbyabinocularvision AT zailuo linearlaserscanningmeasurementmethodtrackingbyabinocularvision AT wensongjiang linearlaserscanningmeasurementmethodtrackingbyabinocularvision |