Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Daniel S. Sawyer"'
Publikováno v:
Measurement. 134:15-24
Terrestrial Laser Scanners (TLSs) are used in a variety of large scale scanning applications such as reverse engineering, assembly of aircraft or ships and surveying. Contrast targets are used with such instruments for enabling scene registration or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e68d95afce62f5ddbcd48368af86c9c0
https://doi.org/10.1016/j.measurement.2018.08.039
https://doi.org/10.1016/j.measurement.2018.08.039
Publikováno v:
Opt Lasers Eng
In this paper, we discuss two aspects concerning terrestrial laser scanners (TLSs) – error model calibration and performance evaluation. Error model calibration is the process of determining parameters of an error model to improve the accuracy of T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b967ef80cc6f9bb51a9e13d6d3c93a4
https://pubmed.ncbi.nlm.nih.gov/33612889
https://pubmed.ncbi.nlm.nih.gov/33612889
Autor:
Vincent D. Lee, Bala Muralikrishnan, Shendong Shi, Daniel S. Sawyer, Octavio Icasio-Hernández
Publikováno v:
Journal of Research of the National Institute of Standards and Technology. 125
Periodic performance evaluation is a critical issue for ensuring the reliability of data from terrestrial laser scanners (TLSs). With the recent introduction of the ASTM E3125-17 standard, there now exist standardized test procedures for this purpose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8704a81df8fc991fa1458c7dbdae4a5e
https://doi.org/10.6028/jres.125.017
https://doi.org/10.6028/jres.125.017
Publikováno v:
Journal of Research of the National Institute of Standards and Technology. 125
Performance verifications of laser tracker systems (LTSs) often rely on calibrated length artifacts that are 2.3 m in length or more, as specified in International Standards Organization (ISO) and American Society of Mechanical Engineers (ASME) stand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1538c7a4bb92fa6db4370b2acfca34f
https://doi.org/10.6028/jres.125.016
https://doi.org/10.6028/jres.125.016
Publikováno v:
Precision Engineering. 52:15-29
Terrestrial laser scanners (TLSs) are increasingly used in a variety of applications where accuracies on the order of few tenths of a millimeter or smaller are routinely demanded. Self-calibration is a quick and cost-effective way to improve the accu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0985b27d2a4d72c90a760704d1b0a095
https://doi.org/10.1016/j.precisioneng.2017.08.004
https://doi.org/10.1016/j.precisioneng.2017.08.004
Publikováno v:
Dimensional Optical Metrology and Inspection for Practical Applications VIII.
Structured light scanners have been commercially available for over a decade and some commercial scanners are evaluated using one of two German guidelines – VDI/VDE 2634 parts 2 and/or 3. Several other research groups have developed physical artifa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc5afd9c319106f752302bee8ab66c5f
https://doi.org/10.1117/12.2518126
https://doi.org/10.1117/12.2518126
Publikováno v:
Precision Engineering. 44:13-28
Thirty years since their invention, laser trackers are now recognized as the measurement tool of choice in the manufacture and assembly of large components. The general design of laser trackers, i.e., a ranging unit on a two-axis gimbal, has not chan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87342b20910600c4b5cb4a2283ffada1
https://doi.org/10.1016/j.precisioneng.2015.12.001
https://doi.org/10.1016/j.precisioneng.2015.12.001
Autor:
Ling Wang, Craig M. Shakarji, Bala Muralikrishnan, Daniel S. Sawyer, Octavio Icasio Hernandez
Publikováno v:
Measurement. 165:108165
Laser trackers (LTs) are widely used for large-scale dimensional metrology. Periodic LT performance evaluation is a key aspect in ensuring measurement reliability. The existing documentary standards for LT performance evaluation require scale bars an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9429542196e87a151957a07e8538a97
https://doi.org/10.1016/j.measurement.2020.108165
https://doi.org/10.1016/j.measurement.2020.108165
Publikováno v:
Optics and Lasers in Engineering. 130:106092
Photogrammetry-based motion tracking systems are widely used in entertainment, medicine, sports, and other industries for low accuracy positioning applications. Camera-based systems track cooperative markers on objects to obtain their real-time posit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b14625469997fa29e16faa8f99db0c79
https://doi.org/10.1016/j.optlaseng.2020.106092
https://doi.org/10.1016/j.optlaseng.2020.106092
Autor:
Bala Muralikrishnan, Vincent D. Lee, Ling Wang, Prem K. Rachakonda, Joe Gleason, Daniel S. Sawyer
Publikováno v:
Measurement. 153:107398
Spherical coordinate three-dimensional (3D) imaging systems, such as Terrestrial Laser Scanners (TLS), are already used widely in different fields. Their measurement performance evaluation is a topic of active research. In 2017, the first comprehensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1de6fda02d1895820f1f944db323341d
https://doi.org/10.1016/j.measurement.2019.107398
https://doi.org/10.1016/j.measurement.2019.107398