Results 11 to 20 of about 423,050 (241)

Research on highly dynamic 3D measurement method based on RGB color fringe projection

Journal of the European Optical Society-Rapid Publications, 2023
Metal parts with highly dynamic areas often appear in industrial production measurements. However, if the traditional fringe projection technique is used to project fringe onto the surface of these metal parts, the light energy will be excessively ...
Fu Ling, Gao Dingshan
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Comparative Analysis of Object Digitization Techniques Applied to the Characterization of Deformed Materials in Ballistic Tests

Sensors, 2020
Several three-dimensional scanning methods have been developed and improved over the past 40 years. The peculiarities of each technique, associated with the computational advances of the period, allowed the increasing application and diffusion of the ...
Filipe Dmengeon Pedreiro Balbino, Khrissy Aracélly Reis Medeiros, Carlos Roberto Hall Barbosa   +2 more
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A Three-Dimensional Structured Light Vision System by Using a Combination of Single-Line and Three-Line Lasers

Sensors, 2022
A multi-line structured light measurement method that combines a single-line and a three-line laser, in which precision sliding rails and displacement measurement equipment are not required, is proposed in this paper.
Qiucheng Sun, Zeming Ren, Jinlong Zhu, Weiyu Dai, Mingze Wang, Mingyu Sun   +5 more
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Three- and Four-Dimensional Topographic Measurement and Validation

Remote Sensing, 2021
This paper reports on the activities carried out in the context of “Dragon project 32278: Three- and Four-Dimensional Topographic Measurement and Validation”.
Fabio Rocca, Deren Li, Stefano Tebaldini, Mingsheng Liao, Lu Zhang, Fabrizio Lombardini, Timo Balz, Norbert Haala, Xiaoli Ding, Ramon Hanssen   +9 more
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Single-Shot 3D Shape Reconstruction Using Structured Light and Deep Convolutional Neural Networks

Sensors, 2020
Single-shot 3D imaging and shape reconstruction has seen a surge of interest due to the ever-increasing evolution in sensing technologies. In this paper, a robust single-shot 3D shape reconstruction technique integrating the structured light technique ...
Hieu Nguyen, Yuzeng Wang, Zhaoyang Wang
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In vitro Accuracy of Dental 3D Printers for the Fabrication of Laminate Veneers with Different Preparation Designs [PDF]

Journal of Dentistry
Background: The adoption of three-dimensional (3D) printing in dentistry for prosthetic workflows is increasing. A crucial step in the indirect fabrication of laminate veneers involves creating accurate master casts from digital impressions.
Mohammad Amin Bafandeh, Mohammad Alihemmati, Ali Jamali Ghomi, Maryam Jahangiri, Yasaman Sherafatmand, Sayed Shojaedin Shayegh   +5 more
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Three-Dimensional MEG Measurement

Transactions of the Magnetics Society of Japan, 2004
We have developed a three-dimensional (3-D) second-order gradiometer connected to 39-channel SQUIDs for vector measurement of magnetoencephalogram (MEG) that can simultaneously detect magnetic field components perpendicular and tangential to the scalp. Each coil is orthogonally wound with Nb-Ti wire on a rectangular solid of 3×3×6 cm.
Y. Uchikawa, K. Kobayashi
openaire   +2 more sources

Influence of Connecting Two Standalone Mobile Three-Dimensional Scanners on Accuracy Comparing with a Standard Device in Facial Scanning

eJournal of Oral Maxillofacial Research, 2017
Objectives: In this study is investigated if bundling of two scanners leads to better accuracy in recording faces than a standard face-scanning device. Material and Methods: In a group of 28 volunteers, two test specimens were attached to their faces:
Ali Modabber, Florian Peters, Anna Brokmeier, Evgeny Goloborodko, Anna Brokmeier, Alireza Ghassemi, Bernd Lethaus, Frank Hölzle, Stephan Christian Möhlhenrich, Frank Hölzle   +9 more
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3D-ANTLERS: VIRTUAL RECONSTRUCTION AND THREE-DIMENSIONAL MEASUREMENT [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The main objective of this paper is to establish a procedural method for measuring and cataloguing antlers through the use of laser scanner and of a 3D reconstruction of complex modeling.
S. Barba, F. Fiorillo, E. De Feo
doaj   +1 more source

Open-Source Hardware-Based Three-Dimensional Positioning Device for Indoor Measurement and Positioning

IEEE Access, 2023
Indoor private (local) wireless networks are considered key enablers for the industrial Internet of Things (IIoT). To ensure that a private network satisfies its own requirements and guarantees coverage, it is important to accurately measure the radio ...
Issei Makino, Nobuhiko Miki
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