Počet záznamů: 1
Measurement of the X-ray computed tomography instrument geometry by minimization of reprojection errors - implementation on experimental data
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SYSNO ASEP 0492800 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Measurement of the X-ray computed tomography instrument geometry by minimization of reprojection errors - implementation on experimental data Tvůrce(i) Ferrucci, M. (BE)
Heřmánek, P. (IT)
Ametova, E. (BE)
Sbettega, E. (IT)
Vopálenský, Michal (UTAM-F) RID, ORCID, SAI
Kumpová, Ivana (UTAM-F) RID, SAI, ORCID
Vavřík, Daniel (UTAM-F) RID, SAI, ORCID
Carmignato, S. (IT)
Craeghs, T. (BE)
Dewulf, W. (BE)Celkový počet autorů 10 Zdroj.dok. Precision Engineering : Journal of the International Societies for Precision Engineering and Nanotechnology. - : Elsevier - ISSN 0141-6359
Roč. 54, October (2018), s. 107-117Poč.str. 11 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova X-ray computed tomography ; dimensional metrology ; instrument alignment Vědní obor RIV JB - Senzory, čidla, měření a regulace Obor OECD Electrical and electronic engineering CEP LO1219 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy UT WOS 000452579900012 EID SCOPUS 85047641667 DOI 10.1016/j.precisioneng.2018.05.007 Anotace A procedure for measuring the geometry of X-ray computed tomography (CT) instruments is applied to an experimental CT instrument. In this study, the geometrical measurement procedure is implemented with the CT2 reference object, comprising steel spheres with known center positions in a local coordinate frame affixed to a cylindrical carbon fiber framework. The procedure can be implemented with other sphere-based reference objects, provided the sphere center coordinates are known. The effects of number of acquired projections and rotation mode (stepped or continuous) on the quality of measured geometrical parameters are studied. Finally, the output of the geometrical measurement procedure is used to inform the physical adjustment of the experimental CT instrument to its ideal alignment. The effectiveness of the measurement procedure to correctly determine the instrument geometry is demonstrated from dimensional measurements performed on a tomographically reconstructed validation object from radiographs acquired under initial (misaligned) and adjusted (aligned) instrument geometry. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2019
Počet záznamů: 1