Results 31 to 40 of about 44,514 (243)

RADIOMETRIC CALIBRATION OF MULTI-WAVELENGTH AIRBORNE LASER SCANNING DATA [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Airborne laser scanning (ALS) is a widely used technique for the sampling of the earth's surface. Nowadays a wide range of ALS sensor systems with different technical specifications can be found.
C. Briese   +5 more
doaj   +1 more source

Modeling river bed morphology, roughness, and surface sedimentology using high resolution terrestrial laser scanning [PDF]

open access: yes, 2012
Recent advances in technology have revolutionized the acquisition of topographic data, offering new perspectives on the structure and morphology of the Earth's surface.
Brasington, J.   +2 more
core   +2 more sources

A high-precision liDAR-based method for surveying and classifying coastal notches [PDF]

open access: yes, 2018
Formation of notches is an important process in the erosion of seaside cliffs. Monitoring of coastal notch erosion rate and processes has become a prime research focus for many coastal geomorphologists.
Antunes   +9 more
core   +1 more source

MULTISPECTRAL AIRBORNE LASER SCANNING FOR AUTOMATED MAP UPDATING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
During the last 20 years, airborne laser scanning (ALS), often combined with multispectral information from aerial images, has shown its high feasibility for automated mapping processes. Recently, the first multispectral airborne laser scanners have been
L. Matikainen, J. Hyyppä, P. Litkey
doaj   +1 more source

Study of the Precise Determination of Pipeline Geometries Using UAV Scanning Compared to Terrestrial Scanning, Aerial Scanning and UAV Photogrammetry

open access: yesSensors, 2023
Transmission pipelines belong to technical infrastructure, the condition of which is subject to periodic monitoring. The research was to verify whether aerial measurement methods, especially UAV laser scanning, could determine the geometric shape of ...
Grzegorz Lenda   +2 more
doaj   +1 more source

Airborne laser scanning and usefulness for hydrological models [PDF]

open access: yesAdvances in Geosciences, 2005
Digital terrain models form the basis for distributed hydrologic models as well as for two-dimensional hydraulic river flood models. The technique used for generating high accuracy digital terrain models has shifted from stereoscopic aerial-photography ...
M. Hollaus, W. Wagner, K. Kraus
doaj  

Towards building information modelling for existing structures [PDF]

open access: yes, 2008
The transformation of cities from the industrial age (unsustainable) to the knowledge age (sustainable) is essentially a ‘whole life cycle’ process consisting of; planning, development, operation, reuse and renewal.
Arayici, Y
core   +2 more sources

Fusion of crown and trunk detections from airborne UAS based laser scanning for small area forest inventories

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
High density point clouds from unmanned airborne laser scanning (UALS) systems have great potential for small area forest inventories. We propose an UALS-based tree level inventory method that takes advantage of both the segmented crowns and segmented ...
Mikko Kukkonen   +3 more
doaj   +1 more source

URBAN TREE CLASSIFICATION USING FULL-WAVEFORM AIRBORNE LASER SCANNING [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Vegetation mapping in urban environments plays an important role in biological research and urban management. Airborne laser scanning provides detailed 3D geodata, which allows to classify single trees into different taxa.
Zs. Koma, K. Koenig, B. Höfle
doaj   +1 more source

Design and Implementation of a Non-Common-View Axis Alignment System for Airborne Laser Communication

open access: yesPhotonics, 2023
This paper proposes a non-common-view axis alignment method for the alignment requirements of airborne laser communication systems. The system consists of a ground transmitting end and an airborne relay terminal. The ground transmitting end uses a camera
Chenghu Ke   +4 more
doaj   +1 more source

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