In this thesis, the scan trajectory for dimensional Computed Tomography was extended through adaptive component tilting during the scan. For this purpose, a hexapod was used as additional positioning unit in a commercial CT device. By correctly considering the kinematic chain for CT reconstruction and suitable trajectory determination, 3D scan trajectories could successfully be applied without loss of measurement accuracy, despite the additionally introduced positioning errors. The methodology from literature regarding trajectory calibration has been extended, among other things, through a cost-efficient method using only a single sphere, which however comes with a high sensitivity to systematic positioning errors. The potential for avoiding cone beam artefacts and reducing imaging artefacts by avoiding high absorption in regions of interest has been successfully demonstrated. For trajectory planning, two different approaches were examined. The comprehensive sampling of the maximum possible trajectory range through the fusion of circular trajectories without further action did not yield substantial improvements. On the other hand, the use of a quality measure specifically developed for surface-based metrology led to a significant reduction of measurement errors, especially for a small number of projections.<\/p>","protected":false},"excerpt":{"rendered":"
In dieser Dissertation wurde die Erweiterung der Scantrajektorie f\u00fcr die dimensionelle Computertomographie durch adaptive Bauteilneigung untersucht. Hierf\u00fcr wurde ein Hexapod als zus\u00e4tzliche Positioniereinheit in einem kommerziellen CT-Ger\u00e4t verwendet. Durch eine korrekte Ber\u00fccksichtigung der kinematischen Kette bei der CT-Rekonstruktion und eine geeignete Trajektorieneinmessung konnten komplexe 3-D-Scantrajektorien erfolgreich und ohne Genauigkeitsverlust trotz zus\u00e4tzlicher Positionierabweichungen realisiert werden. Das […]<\/p>\n","protected":false},"featured_media":6032,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[34],"product_tag":[],"class_list":{"0":"post-6031","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-fau-studien-aus-dem-maschinenbau","7":"has-post-title","8":"has-post-date","9":"has-post-category","10":"has-post-tag","11":"has-post-comment","12":"has-post-author","13":"","15":"first","16":"instock","17":"taxable","18":"shipping-taxable","19":"purchasable","20":"product-type-simple"},"acf":{"autor":"Butzhammer, Lorenz ","orcid":"0000-0002-5537-4849","ror":"","herausgeber":"","orcid_hrsg":"","rorhrsg":"","bearbeiter":"","sonstige_beteiligte_personen":"","untertitel":"","zusatz":"","jahr":"2025","zeitschrift":"","serie":"","serie_name":false,"serie_band":"","serie_jahr":"","serie_titel_band":"","vortrage":"","issn":"","isbn":"978-3-96147-812-5","isbn13":"","seiten":"xvi, 212","sonstiges":"","band":459,"auflage":"","opus":"","dspace":"36453","e-isbn_pdf":"978-3-96147-813-2","doi":"https:\/\/doi.org\/10.25593\/978-3-96147-813-2","epub":"","e-isbn_epub":"","doi_epub":"","html":"","e-isbn_html":"","doi_html":"","e-isbn_reader":"","doi_reader":"","digibib":"","urn":"","supplementary_material":"","sprache":["Deutsch"],"ausgabe":"Softcover","suche":"9783961478125 9783961478132 ","lizenz":"BY-NC-4","bemerkung":"1\tFAU Press\r\n1\tHB\r\n4\tBSB \/ DNB\r\n1\tTNZB\r\n1\tTIB\r\n"},"builder_content":"","_links":{"self":[{"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/product\/6031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/comments?post=6031"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/media\/6032"}],"wp:attachment":[{"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/media?parent=6031"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/product_brand?post=6031"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/product_cat?post=6031"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.university-press.fau.de\/en\/wp-json\/wp\/v2\/product_tag?post=6031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}