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CERN Document Server 找到 20 笔记录  1 - 10下一个  跳到记录: 检索需时 0.72 秒. 
1.
From pixel to infrastructure: Photogrammetry-based tunnel crack digitalization and documentation method using deep learning / Ouyang, Aohui (University Coll., Cork ; CERN) ; Di Murro, Vanessa (CERN) ; Daakir, Mehdi ; Osborne, John Andrew (CERN) ; Li, Zili (University Coll., Cork)
Crack detection and documentation play a vital role in the asset management of large-scale tunnel complexes. This study proposes a computer vision-based tunnel crack data management method enabling 3D visualization, quantification, and documentation into structured data. The method reconstructs sparse point clouds with Structure from Motion (SfM) and cleans the irrelevant tunnel facilities with a two-stage filtering method. [...]
2025 - Published in : Tunnell. Undergr. Space Technol. 155 (2025) 106179
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2.
TunnelVision: LHC Tunnel Photogrammetry System for Structural Monitoring / Fallas, William (CERN)
In this document an algorithm to detect deformations in the LHC Tunnel of CERN is presented. [...]
CERN-STUDENTS-Note-2015-025. - 2014
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3.
Monitoring of absolute mirror alignment at COMPASS RICH-1 detector / Alexeev, M (INFN, Turin ; Piemonte Orientale U., Alessandria ; Bari U. ; INFN, Trieste) ; Birsa, R (INFN, Trieste) ; Bradamante, F (INFN, Trieste ; Trieste U.) ; Bressan, A (INFN, Trieste ; Trieste U.) ; Chiosso, M (INFN, Turin ; Turin U.) ; Ciliberti, P (INFN, Trieste ; Trieste U.) ; Dalla Torre, S (INFN, Trieste) ; Denisov, O (INFN, Turin) ; Duic, V (INFN, Trieste ; Trieste U.) ; Ferrero, A (INFN, Turin ; Turin U.) et al.
The gaseous COMPASS RICH-1 detector uses two spherical mirror surfaces, segmented into 116 individual mirrors, to focus the Cherenkov photons onto the detector plane. Any mirror misalignment directly affects the detector resolution. [...]
2014 - 4 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 766 (2014) 208-211 Elsevier Open Access article: PDF;
In : 8th International Workshop on Ring Imaging Cherenkov Detectors, Hayama, Kanagawa, Japan, 2 - 6 Dec 2013, pp.208-211
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4.

CMS-PHO-MUON-2013-002
© 2013 CERN, for the benefit of the CMS Collaboration 		Photogrammetry of the new CSC chambers at the CMS Experiment
22/11/2013
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5.

CMS-PHO-MAGNET-2000-046
© 2000 CERN, for the benefit of the CMS Collaboration 		View of the photogrammetric targets for the first YE1 at KHI.
Vue des cibles photogrammetriques pour le premier YE1 chez KHI.
View of the photogrammetric targets for the first [...]
31 Mar 2000
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6.

CMS-PHO-MAGNET-2000-043
© 2000 CERN, for the benefit of the CMS Collaboration 		Photogrammetry of first YE at KHI with photogrammetry targets shinning.
Photogrammetrie du premier YE à KHI avec les cibles en brillance..
A view of the first YE half disk at KHI with the p [...]
31 Mar 2000
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7.
Study of a twisted ATLAS SCT Barrel deformation as revealed by a photogrammetric survey / Dobson, E ; Gibson, S M ; Heinemann, F ; Karagoz-Unel, M
A photogrammetry survey on the SCT barrels was performed as an engineering check on the structure of the ATLAS Semiconductor Tracker (SCT) shortly after construction. [...]
ATL-INDET-PUB-2008-011 ; ATL-COM-INDET-2007-020. - 2007 - mult..
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8.
Global analytic treatment of terrestrial photogrammetric networks / Mayoud, M
In order to solve certain special CERN metrology problems, analytical terrestrial photogrammetry may have some advantages which are first discussed along with their drawbacks and limitations. In this application, it is necessary to carry out a rigorous and global adjustment of the observations and simultaneously process all the perspective ray bundles. [...]
1980 - Published in : Bull. Soc. Francaise . Photogrammetr. Teledetect.: 78 (1980) , pp. 17-25
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9.
Performance test of the CMS link alignment system / Arce, P ; Barcala, J M ; Calvo, E ; Fernández, M G ; Ferrando, A ; Figueroa, C F ; García, N ; Josa-Mutuberria, I ; Molinero, A ; Oller, J C et al.
A first global test of the CMS Alignment System was performed at the I4 hall of the CERN ISR tunnel. Positions of the network, reproducing a set of points in the CMS detector monitored by the Link System, were reconstructed and compared to survey measurements. [...]
2002 - Published in : Nucl. Instrum. Methods Phys. Res., A 492 (2002) 365-375
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10.
Mesures Photogrammitriques Des Extrimitis De MPB1A1 Avant Et Aprhs Transport Schio-CERN / Humbertclaude, C (CERN)
LHC-Project-Note-133.- Geneva : CERN, 1998 Fulltext: PDF;
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