{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T07:10:37Z","timestamp":1776755437586,"version":"3.51.2"},"reference-count":32,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2022,1,28]],"date-time":"2022-01-28T00:00:00Z","timestamp":1643328000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Project of Shandong Provincial Major Scientific and Technological Innovation","award":["No.2019JZZY010444"],"award-info":[{"award-number":["No.2019JZZY010444"]}]},{"name":"the Project of Shandong Provincial Major Scientific and Technological Innovation","award":["No.2019TSLH0315"],"award-info":[{"award-number":["No.2019TSLH0315"]}]},{"name":"the Project of 20 Policies of Facilitate Scientific Research in Jinan Colleges","award":["No.2019GXRC063"],"award-info":[{"award-number":["No.2019GXRC063"]}]},{"name":"the Project of Shandong Province Higher Educational Science and Technology Program","award":["No.J18KA345"],"award-info":[{"award-number":["No.J18KA345"]}]},{"name":"the Natural Science Foundation of Shandong Province of China","award":["No.ZR2020MF138."],"award-info":[{"award-number":["No.ZR2020MF138."]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Light pens for 3D vision coordinate measurement systems are increasingly widely used due to their advantages, such as their small size, convenience of being carried, and widespread applicability. The posture of the light pen is an important factor that affects accuracy. The pose domain of the pen needs to be given so that the measurement system has a suitable measurement range to obtain more qualified parameters. The advantage of the self-calibration method is that the entire self-calibration process can be completed at the measurement site with no auxiliary equipment. After the system camera calibration was completed, we took several pictures of the same measurement point with different poses to obtain the conversion matrix of the picture and subsequently used spherical fitting, the generalized inverse method of least squares, and the principle of position invariance in the pose domain range. The combined stylus tip center self-calibration method calculates the actual position of the light pen probe. The experimental results verify the effectiveness of the method; the measurement accuracy of the system can satisfy basic industrial measurement requirements.<\/jats:p>","DOI":"10.3390\/s22031029","type":"journal-article","created":{"date-parts":[[2022,1,29]],"date-time":"2022-01-29T01:43:27Z","timestamp":1643420607000},"page":"1029","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Self-Calibration Method and Pose Domain Determination of a Light-Pen in a 3D Vision Coordinate Measurement System"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2340-596X","authenticated-orcid":false,"given":"Dongri","family":"Shan","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Chenglong","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Peng","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Automation, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Xiaofang","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Automation, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Dongmei","family":"He","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Automation, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Yalu","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Maohui","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]},{"given":"Guoqi","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250300, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"287","DOI":"10.1016\/S0263-2241(97)00037-7","article-title":"Coordinate measuring machines and systems: John A. 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