Results 21 to 30 of about 397,238 (218)

Evaluation of the Metrological Performance of a Handheld 3D Laser Scanner Using a Pseudo-3D Ball-Lattice Artifact

Sensors, 2021
This paper proposes the use of a pseudo-3D ball-lattice artifact to characterize a handheld laser scanner from a metrological standpoint. The artifact allows the computation of local and global errors in measurement by using the reference-frame ...
Rémi Bonin, Farbod Khameneifar, J.R.R. Mayer   +2 more
doaj   +1 more source

Accuracy and dimensional reproducibility by model scanning, intraoral scanning, and CBCT imaging for digital implant dentistry

International Journal of Implant Dentistry, 2021
Background Recently, it has become possible to analyze implant placement position using the digital matching data of optical impression data of the oral cavity or plaster models with cone beam computed tomography (CBCT) data, and create a highly accurate
Akira Komuro, Yoichi Yamada, Satoshi Uesugi, Hiroaki Terashima, Masashi Kimura, Hiroto Kishimoto, Tsutomu Iida, Katsuya Sakamoto, Kenichi Okuda, Kaoru Kusano, Shunsuke Baba, Takashi Sakamoto   +11 more
doaj   +1 more source

The Use of Scanner Data for Price Indices Calculation: the Case of Poland

Acta Universitatis Lodziensis. Folia Oeconomica
In the context of the growing use of scanner data in inflation measurement, a key methodological challenge remains the choice of the appropriate price index formula and data filtering method.
Natalia Pawelec
doaj   +1 more source

Investigating the implant position reproducibility of optical impressions obtained using an intraoral scanner and 3D-printed models fabricated using an intraoral scanner

International Journal of Implant Dentistry, 2023
Purpose This study aims to examine the effect of the size of the intraoral scanning area on implant position reproducibility and compare the implant position reproducibility of plaster models fabricated using the silicone impression technique, the ...
Maya Iwamoto, Wataru Atsuta, Yasuhide Kaneko, Junnosuke Ito, Takeshi Kanno, Takahiro Murakami, Jyoji Tanaka   +6 more
doaj   +1 more source

Comparative Analysis of Three Facial Scanners for Creating Digital Twins by Focusing on the Difference in Scanning Method

Bioengineering, 2023
Background: Multi-dimensional facial imaging is increasingly used in hospital clinics. A digital twin of the face can be created by reconstructing three-dimensional (3D) facial images using facial scanners.
Ran-Yeong Cho, Soo-Hwan Byun, Sang-Min Yi, Hee-Ju Ahn, Yoo-Sung Nam, In-Young Park, Sung-Woon On, Jong-Cheol Kim, Byoung-Eun Yang   +8 more
doaj   +1 more source

Consumer Price Index in the Czech Republic – New Sources and Data Processing [PDF]

Statistika: Statistics and Economy Journal
Consumer price index has been in the centre of interest for many years, since being published in 1990s in the Czech Republic but recent price growth raised more questions on methodology and data sources used in price statistics.
Jaroslav Sixta, Petr Musil
doaj   +1 more source

A Contrast Augmentation Approach to Improve Multi-Scanner Generalization in MRI

Frontiers in Neuroscience, 2021
Most data-driven methods are very susceptible to data variability. This problem is particularly apparent when applying Deep Learning (DL) to brain Magnetic Resonance Imaging (MRI), where intensities and contrasts vary due to acquisition protocol, scanner-
Maria Ines Meyer, Maria Ines Meyer, Ezequiel de la Rosa, Ezequiel de la Rosa, Nuno Pedrosa de Barros, Roberto Paolella, Roberto Paolella, Koen Van Leemput, Koen Van Leemput, Diana M. Sima   +9 more
doaj   +1 more source

Analysis of performances and trends of PDO wine producers in large retail chains in Italy

Wine Economics and Policy
The large retail chains represent the main distribution channel for wine sales in Italy. Retailers, therefore, define the wine supply of their points-of-sale based on their own commercial strategies, taking into account evolving consumer demand, producer
Andrea Dominici, Francesca Gerini, Leonardo Casini   +2 more
doaj   +1 more source

3D laser scanner design and data processing

Dianzi Jishu Yingyong, 2019
Based on 2D laser radar and pan-tilt device, a 3D laser scanner is designed as a data acquisition device. At the same time, the scanning control and data processing system is designed on the host computer. The scanning control system realizes the control
Duan Qingming, Wang Fan, Xu Linlin, Quan Wenjun   +3 more
doaj   +1 more source

Digital Workflow to Fabricate Complete Dentures for Edentulous Patients Using a Reversing and Superimposing Technique

Applied Sciences, 2021
This technical procedure demonstrates a 4-step completely digital workflow for the fabrication of complete dentures in edentulous patients. The digital scan data of the edentulous arches were obtained using an intraoral scanner, followed by the ...
Hwa-Jung Lee, Jeongho Jeon, Hong Seok Moon, Kyung Chul Oh   +3 more
doaj   +1 more source