Results 21 to 30 of about 130,668 (250)

ANALYSIS OF DATA JOINING FROM DIFFERENT INSTRUMENTS FOR OBJECT MODELLING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The aim of this contribution is an analysis of related technologies for data capturing for creating a digital twin of selected construction. As a case project a baroque church was selected.
K. Pavelka   +4 more
doaj   +1 more source

DIFFERENT DATA JOINING AS A BASIC MODEL FOR HBIM – A CASE PROJECT ST. PATALEIMON IN SKOPJE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
H-BIM (Heritage Building Information Modelling) is principle and system of use of historic buildings that can be used for the management, reconstruction or renovation and restoration of monuments.
K. Pavelka jr.   +3 more
doaj   +1 more source

Automatic detection of color markings and numbers on trees in point clouds from Personal Laser Scanning (PLS) and Terrestrial Laser Scanning (TLS)

open access: yesEcological Informatics
Sarah Wagner   +10 more
openaire   +3 more sources

Comparison of Forest Inventory Methods at Plot-Level between a Backpack Personal Laser Scanning (BPLS) and Conventional Equipment in Jeju Island, South Korea [PDF]

open access: yesForests, 2021
In recent years, light detection and ranging (LiDAR) has been increasingly utilized to estimate forest resources. This study was conducted to identify the applicability of a LiDAR sensor for such estimations by comparing data on a tree’s position, height, and diameter at breast height (DBH) obtained using the sensor with those by existing forest ...
Chiung Ko   +4 more
openaire   +1 more source

Three‐dimensional reconstruction of fluvial surface sedimentology and topography using personal mobile laser scanning [PDF]

open access: yesEarth Surface Processes and Landforms, 2019
AbstractHigh‐resolution quantification of fluvial topography has been enabled by a number of geomatics technologies. Hyperscale surveys with spatial extents of <1 km2 have been widely demonstrated by means of terrestrial laser scanning (TLS) and structure‐from‐motion (SfM) photogrammetry.
Richard David Williams   +3 more
openaire   +2 more sources

Enhanced controlling of the SLS Process during a build [PDF]

open access: yes, 1998
Current commercial Rapid Prototyping (RP) systems like Stereolithography (3D Systems Corporation) and Selective Laser Sintering (DTM Corporation) use galvanometers from General Scanning Inc. (GSI) for the positioning of the laser beam.
Ahzi, Said   +3 more
core   +1 more source

Evaluation of a Backpack-Mounted 3D Mobile Scanning System

open access: yesRemote Sensing, 2015
Recently, several backpack-mounted systems, also known as personal laser scanning systems, have been developed. They consist of laser scanners or cameras that are carried by a human operator to acquire measurements of the environment while walking. These
Helge A. Lauterbach   +5 more
doaj   +1 more source

LASER ABLATION OF MONOCRYSTALLINE SILICON UNDER PULSED-FREQUENCY FIBER LASER [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
Subject of research. The paper deals with research of the surface ablation for single-crystal silicon wafers and properties of materials obtained in response to silicon ablation while scanning beam radiation of pulse fiber ytterbium laser with a ...
V. P. Veiko   +3 more
doaj   +1 more source

Microscopic Observation of Plastic Deformation of Polycrystalline Aluminum by Laser Scanning Microscope [PDF]

open access: yes, 2001
Free surface of polycrystalline metal becomes roughened after plastic deformation. The surface roughening is closely related to the inhomogeneity of polycrystalline metals, that is, to the inhomogeneous plastic deformation of respective grains.
Abe, Takeji   +3 more
core   +1 more source

Scanning laser source and scanning laser detection techniques for different surface crack geometries [PDF]

open access: yes, 2012
Standard test samples typically contain simulated defects such as slots machined normal to the surface. However, real defects will not always propagate in this manner; for example, rolling contact fatigue on rails propagates at around 25º to the surface,
Clough, A. R.   +3 more
core   +1 more source

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