Affiliation:
1. Institute of Manufacturing Metrology (FMT) , 88768 Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen , Germany
Abstract
Abstract
X-ray computed tomography (CT) enables dimensional measurements of numerous measurands with a single scan, including the measurement of inner structures. However, measurement artefacts complicate the applicability of the technology in some cases. This paper presents a methodology to assess the surface point quality of computed tomography measurements without the requirement of a CAD model. Measurement artefacts lowering the surface point quality can therefore automatically be detected. The correlation of quality values with the random measurement error is demonstrated. The presented method can in principle be used to weight single fit points to reduce the measurement uncertainty of CT measurements.
Funder
Deutsche Forschungsgemeinschaft
Subject
Electrical and Electronic Engineering,Instrumentation
Reference26 articles.
1. ASTM. E1695-95(2013), Standard Test Method for Measurement of Computed Tomography (CT) System Performance, ASTM International, West Conshohocken, PA, 2013.
2. J. F. Barrett and N. Keat. Artifacts in CT: Recognition and avoidance. RadioGraphics, 24 (6): 1679–1691, 2004. ISSN 0271-5333, 1527-1323. 10.1148/rg.246045065.
3. S. Bartolac, R. Clackdoyle, F. Noo, J. Siewerdsen, D. Moseley, and D. Jaffray. A local shift-variant fourier model and experimental validation of circular cone-beam computed tomography artifacts. Medical Physics, 36 (2): 500–512, 2009. 10.1118/1.3062875.
4. T. M. Buzug. Computed Tomography. Springer, Berlin Heidelberg, 2008. 10.1007/978-3-540-39408-2.
5. S. Carmignato, W. Dewulf, and R. Leach, editors. Industrial X-Ray Computed Tomography. Springer International Publishing, 2018. 10.1007/978-3-319-59573-3.
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献