Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Vincent D. Lee"'
The industrial use of X-ray Computed Tomography (known briefly as XCT, or sometimes simply as CT) is on the rise because a single XCT scan can measure an arbitrary number of features, and XCT instruments can measure features inaccessible to contact o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::349358203a173e4f1dda431500aa6c2e
https://doi.org/10.1115/1.0004653v
https://doi.org/10.1115/1.0004653v
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:
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
Autor:
Prem K. Rachakonda, Daniel S. Sawyer, Joe Gleason, Ling Wang, Bala Muralikrishnan, Vincent D. Lee
Publikováno v:
Measurement. 152:107274
A scale bar with sphere targets is one way of realizing the symmetric and asymmetric length tests to evaluate Terrestrial Laser Scanner (TLS) performance per the ASTM E3125-17 standard. The length of the scale bar is required to be known with an expa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42dc0a4f36d6c8c5922b4a8c744d06d5
https://doi.org/10.1016/j.measurement.2019.107274
https://doi.org/10.1016/j.measurement.2019.107274
Autor:
Meghan Shilling, Wei Ren, Bala Muralikrishnan, Daniel S. Sawyer, Vincent D. Lee, Prem K. Rachakonda
Publikováno v:
Journal of Manufacturing Systems. 37:550-557
This paper describes ongoing research work at the National Institute of Standards and Technology (NIST) in support of the development of a documentary standard for derived-point to derived-point distance performance evaluation of spherical coordinate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0c5b6bff85dac864f4d49baefa5e17e
https://doi.org/10.1016/j.jmsy.2015.04.002
https://doi.org/10.1016/j.jmsy.2015.04.002
Autor:
Y. Yakovlev, Steven D. Phillips, Balasubramanian Muralikrishnan, J. Palmateer, Vincent D. Lee, Christopher J. Blackburn, S. Milligan, P. Petrov, A. Astrelin, Daniel S. Sawyer, G. Gerner, Massimiliano Ferrucci
Publikováno v:
Precision Engineering. 40:139-150
We discuss a geometric error model for those large volume laser scanners that have the laser source and a spinning prism mirror mounted on a platform that can rotate about the vertical axis. We describe the terms that constitute the model, address th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a109ef9dfabb2e870fbedab56da690a6
https://doi.org/10.1016/j.precisioneng.2014.11.002
https://doi.org/10.1016/j.precisioneng.2014.11.002
Autor:
Luc Cournoyer, Prem K. Rachakonda, Bala Muralikrishnan, Geraldine S. Cheok, Meghan Shilling, Daniel S. Sawyer, Vincent D. Lee
The Dimensional Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) is performing research to support the development of documentary standards within ASTM E57 committee. This committee is addressing the point-to-point p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd7ce7f2e23e67959bfce570c763b156
https://nrc-publications.canada.ca/eng/view/object/?id=3f856b36-a2cf-4f99-b40c-a7671845ad42
https://nrc-publications.canada.ca/eng/view/object/?id=3f856b36-a2cf-4f99-b40c-a7671845ad42
Publikováno v:
Precision Engineering. 38:270-278
Precision mechanisms that require repeatable and friction free motion utilize numerous types of flexural bearing joints. This manuscript expands the pool of existing flexure designs by presenting a type of two-degree of freedom (DOF) flexural joint,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1867676cf782d099ace7820d02bf0611
https://doi.org/10.1016/j.precisioneng.2013.10.001
https://doi.org/10.1016/j.precisioneng.2013.10.001