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Calibration procedure for a laser triangulation scanner with uncertainty evaluation |
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| Affiliation: | 1. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China;2. Department of Precision Instrument, Tsinghua University, Beijing 100084, China;1. School of Science,Wuhan university of technology, Wuhan 430070, China;2. Department of Electrical and Computer Engineering, University of North Carolina at Charlotte, Charlotte, NC 28223 USA;1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China;3. Shanghai Key Lab of Advanced Manufacturing Environment, Shanghai 200240, China |
| Abstract: | Most of low cost 3D scanning devices that are nowadays available on the market are sold without a user calibration procedure to correct measurement errors related to changes in environmental conditions. In addition, there is no specific international standard defining a procedure to check the performance of a 3D scanner along time. This paper aims at detailing a thorough methodology to calibrate a 3D scanner and assess its measurement uncertainty. The proposed procedure is based on the use of a reference ball plate and applied to a triangulation laser scanner. Experimental results show that the metrological performance of the instrument can be greatly improved by the application of the calibration procedure that corrects systematic errors and reduces the device's measurement uncertainty. |
| Keywords: | 3D scanner Laser triangulation Calibration Ball plate Measurement uncertainty |
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