Results 21 to 30 of about 2,478 (212)

Evaluation of the dynamics of change of shore cliff located in the vicinity of Pleśna village in the period 2006-2015 [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2016
Climate changes on our planet contribute to the rise in the average level of the seas, oceans, and a greater number of storms. It causes an increasing process of the sea abrasion on the cliffs.
Czesław Suchocki   +3 more
doaj   +1 more source

Comparing Three Different Ground Based Laser Scanning Methods for Tree Stem Detection

open access: yesRemote Sensing, 2018
A forest inventory is often carried out using airborne laser data combined with ground measured reference data. Traditionally, the ground reference data have been collected manually with a caliper combined with land surveying equipment.
Ivar Oveland   +4 more
doaj   +1 more source

Interactive Trunk Extraction from Forest Point Cloud [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
For forest management or monitoring, it is required to constantly measure several parameters of each tree, such as height, diameter at breast height, and trunk volume.
T. Mizoguchi, Y. Kobayashi
doaj   +1 more source

CYLINDER-BASED SELF-CALIBRATION OF A PANORAMIC TERRESTRIAL LASER SCANNER [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Terrestrial Laser Scanners (TLSs) have become state-of-the-art metrological sensors for many surveying purposes in recent years. Due to the demand for high precision surveying with TLSs, efficient, rigorous and in-situ calibration methodologies are ...
T. O. Chan, D. D. Lichti
doaj   +1 more source

MODELLING SINGLE TREE STRUCTURE WITH TERRESTRIAL LASER SCANNER [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Recent technological developments, which has reliable accuracy and quality for all engineering works, such as remote sensing tools have wide range use in forestry applications. Last decade, sustainable use and management opportunities of forest resources
H. Yurtseven, M. Akgül, S. Gülci
doaj   +1 more source

Efficiency Study of Combined UAS Photogrammetry and Terrestrial LiDAR in 3D Modeling for Maintenance and Management of Fill Dams

open access: yesRemote Sensing, 2023
Low-cost unmanned aerial system (UAS) photogrammetry and terrestrial laser scanner (TLS, terrestrial LiDAR) technologies are being used as noncontact measurement methods for collecting unstructured data for the maintenance of construction infrastructure ...
Joonoh Kang   +4 more
doaj   +1 more source

Comparison of 3D Point Clouds Obtained by Terrestrial Laser Scanning and Personal Laser Scanning on Forest Inventory Sample Plots

open access: yesData, 2020
In forest inventory, trees are usually measured using handheld instruments; among the most relevant are calipers, inclinometers, ultrasonic devices, and laser range finders.
Christoph Gollob   +2 more
doaj   +1 more source

Tree stems from terrestrial laser scanner measurements

open access: yesMetsanduslikud Uurimused, 2015
Terrestrial laser scanner (TLS) measurements were carried out in mature birch, pine, and spruce stands in Järvselja, Estonia. The structure of stands has been previously studied.
Kuusk Andres   +3 more
doaj   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Application of a Terrestrial Laser Scanner (TLS) to the Study of the Séchilienne Landslide (Isère, France)

open access: yesRemote Sensing, 2010
The active Séchilienne landslide (Isère, France) has been continuously monitored by tacheometry, radar and extensometry devices for 25 years. Indeed, if the 3 mil. m3 of rocks in the active zone named ―Ruines‖ fell down, the debris would dam the Romanche
Marion Jaud   +5 more
doaj   +1 more source

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