Results 71 to 80 of about 2,183,953 (242)

Utilizing a Terrestrial Laser Scanner for 3D Luminance Measurement of Indoor Environments

open access: yesJournal of Imaging, 2021
We aim to present a method to measure 3D luminance point clouds by applying the integrated high dynamic range (HDR) panoramic camera system of a terrestrial laser scanning (TLS) instrument for performing luminance measurements simultaneously with laser ...
Matti Kurkela   +7 more
doaj   +1 more source

Tamper‐Responsive Physical Unclonable Functions via Graphene‐Interlayered Block Copolymer Random Structures

open access: yesAdvanced Materials, EarlyView.
Self‐invalidating multilayer physical unclonable functions (PUFs) integrate fingerprint‐like metal nanopattern bilayers from block copolymer templates with highly reactive reduced graphene oxide (rGO) interlayers. This tamper‐responsive architecture blocks all unauthorized physical and chemical replication attempts while autonomously deactivating ...
Gyu Hui Jo   +7 more
wiley   +1 more source

Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

open access: yes, 2012
In laser cutting of thick steel sheets, quality difference is observed between cut surfaces obtained with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro   +3 more
core   +1 more source

CONCEPT AND PRACTICE OF TEACHING TECHNICAL UNIVERSITY STUDENTS TO MODERN TECHNOLOGIES OF 3D DATA ACQUISITION AND PROCESSING: A CASE STUDY OF CLOSE-RANGE PHOTOGRAMMETRY AND TERRESTRIAL LASER SCANNING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
For the preparation of modern specialists in the acquisition and processing of three-dimensional data, a broad and detailed study of related modern methods and technologies is necessary.
I. Kravchenko, T. Luhmann, R. Shults
doaj   +1 more source

Benchmarking laser scanning and terrestrial photogrammetry to extract forest inventory parameters in a complex temperate forest

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
National forest inventories (NFI) are important for the assessment of the state and development of forests. Traditional NFIs often rely on statistical sampling approaches as well as expert assessment which may suffer from observer bias and may lack ...
Daniel Kükenbrink   +3 more
doaj   +1 more source

Advanced Manufacturing of Composite‐Based Systems for Energy Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Advanced manufacturing enables the integration of polymers, ceramics, metal oxides, and composites into architected microstructures with tailored transport pathways. By coupling material selection, manufacturing strategy, and structural design, multifunctional energy systems can simultaneously improve electrochemical performance, thermal management ...
Sri Vaishnavi Thummalapalli   +13 more
wiley   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja   +9 more
wiley   +1 more source

Terrestrial Laser Scanning in Building Documentation [PDF]

open access: yesCivil Engineering and Architecture, 2017
During the last decades, documentation of buildings has proven to be a valuable tool for a variety of civil engineering issues, such as urban planning, preservation and restoration of cultural heritage buildings, as well as monitoring during the construction phase.
openaire   +1 more source

Analysis of the Qualitative Parameters of Mobile Laser Scanning for the Creation of Cartographic Works and 3D Models for Digital Twins of Urban Areas

open access: yesApplied Sciences
This article focuses on the assessment of point clouds obtained by various laser scanning methods as a tool for 3D mapping and Digital Twin concepts. The presented research employed terrestrial and mobile laser scanning methods to obtain high-precision ...
Ľudovít Kovanič   +4 more
doaj   +1 more source

Rapid Prototyping — A Tool for Presenting 3-Dimensional Digital Models Produced by Terrestrial Laser Scanning

open access: yesISPRS International Journal of Geo-Information, 2014
Rapid prototyping has received considerable interest with the introduction of affordable rapid prototyping machines. These machines can be used to manufacture physical models from three-dimensional digital mesh models.
Juho-Pekka Virtanen   +5 more
doaj   +1 more source

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