Results 21 to 30 of about 1,477,728 (279)

Exploiting low-cost 3D imagery for the purposes of detecting and analyzing pavement distresses [PDF]

open access: yes, 2020
Road pavement conditions have significant impacts on safety, travel times, costs, and environmental effects. It is the responsibility of road agencies to ensure these conditions are kept in an acceptable state.
Di Mino G., Inzerillo L., Roberts R.
core   +1 more source

Two- and three-dimensional measurements of leg length change using an accelerometer-based portable navigation system in total hip arthroplasty

open access: yesBMC Musculoskeletal Disorders, 2023
Background The aim of this study was examining the accuracy of accelerometer-based portable navigation systems (HipAlign) when measuring leg length changes using two-dimensional (2D) and three-dimensional (3D) methods.
Masahiro Hasegawa   +3 more
doaj   +1 more source

Low-Dose 3D Rotational Angiography in Measuring the Size of Intracranial Aneurysm: In Vitro Feasibility Study Using Aneurysm Phantom [PDF]

open access: yesNeurointervention, 2021
Purpose Three-dimensional (3D) measurement of intracranial aneurysms is important in planning endovascular treatment, and 3D rotational angiography (RA) is effective in accurate measurement.
Hee Jong Ki   +8 more
doaj   +1 more source

Absolute Depth Measurement Using Multiphase Normalized Cross-Correlation for Precise Optical Profilometry

open access: yesSensors, 2019
In a multifrequency phase-shifting (MFPS) algorithm, the temporal phase unwrapping algorithm can extend the unambiguous phase range by transforming the measurement range from a short fringe pitch into an extended synthetic pitch of two different ...
Duc-Hieu Duong   +2 more
doaj   +1 more source

Fast 3D Surface Measurement with Wrapped Phase and Pseudorandom Image

open access: yesSensors, 2019
Balancing the accuracy and speed of three-dimensional (3D) surface measurement of objects is crucial in many important applications. In this paper, we present a wrapped phase and pseudorandom image method and develop an experimental system aiming to ...
Xing Liu, Dong He, Hao Hu, Lixin Liu
doaj   +1 more source

Two-Dimensional Post-Traumatic Measurements of Orbital Floor Blowout Fractures Underestimate Defect Sizes Compared to Three-Dimensional Approaches

open access: yesTomography, 2023
Orbital floor fractures represent a common fracture type of the midface and are standardly diagnosed clinically as well as radiologically using linear measurement methods.
Juergen Taxis   +13 more
doaj   +1 more source

On the calibration measurement of stripline beam position monitor for the ELI-NP facility [PDF]

open access: yes, 2016
Stripline Beam Position Monitor (BPM) will be installed in the Compton Gamma Source in construction at the ELI Nuclear Physics facility in Romania. A test bench for the calibration of BPM has been built to characterize the device with stretched wire ...
Cardelli, Fabio   +3 more
core   +1 more source

Investigation in optimisation of accuracy with non-contact systems by influencing variable processes [PDF]

open access: yes, 2019
The use of 3D scanning systems is becoming increasingly popular and an essential tool for manufacturers for inspection and measurement. With such systems being utilised on the manufacturing shop floor due to their portability and ease of use, it is no ...
Gashi, Bekim V.   +3 more
core   +1 more source

EXAMINATION ABOUT INFLUENCE FOR PRECISION OF 3D IMAGE MEASUREMENT FROM THE GROUND CONTROL POINT MEASUREMENT AND SURFACE MATCHING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
As the 3D image measurement software is now widely used with the recent development of computer-vision technology, the 3D measurement from the image is now has acquired the application field from desktop objects as wide as the topography survey in large ...
T. Anai   +8 more
doaj   +1 more source

A Small and High-Speed Driving Mechanism for 3D Shape Measurement in Monocular Endoscopy

open access: yesSensors, 2021
Three-dimensional (3D) shape acquisition has been widely introduced to enrich quantitative analysis with the combination of object shape and texture, for example, surface roughness evaluation in industry and gastrointestinal endoscopy in medicine.
Yoshikazu Nakajima   +4 more
doaj   +1 more source

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