Results 41 to 50 of about 219,149 (197)

Towards building information modelling for existing structures [PDF]

, 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

Mapping forest age using National Forest Inventory, airborne laser scanning, and Sentinel-2 data [PDF]

, 2020
Background The age of forest stands is critical information for forest management and conservation, for example for growth modelling, timing of management activities and harvesting, or decisions about protection areas.
J. Schumacher, M. Hauglin, R. Astrup, J. Breidenbach   +3 more
semanticscholar   +1 more source

Test field for airborne laser scanning in Finland [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Airborne laser scanning (ALS) is a widely spread operational measurement tool for obtaining 3D coordinates of the ground surface. There is a need for calibrating the ALS system and a test field for ALS was established at the end of 2013.
E. Ahokas, H. Kaartinen, A. Kukko, P. Litkey   +3 more
doaj   +1 more source

Snow depth mapping from stereo satellite imagery in mountainous terrain: evaluation using airborne laser-scanning data

, 2020
. Accurate knowledge of snow depth distributions in mountain catchments is critical for applications in hydrology and ecology. Recently, a method was proposed to map snow depth at meter-scale resolution from very-high-resolution stereo satellite imagery (
C. Deschamps-Berger, S. Gascoin, E. Berthier, J. Deems, E. Gutmann, A. Dehecq, D. Shean, M. Dumont   +7 more
semanticscholar   +1 more source

Laser Scanning in Forests

Remote Sensing, 2012
The introduction of Airborne Laser Scanning (ALS) to forests has been revolutionary during the last decade. This development was facilitated by combining earlier ranging lidar discoveries [1–5], with experience obtained from full-waveform ranging radar ...
Håkan Olsson, Juha Hyyppä, Markus Holopainen   +2 more
doaj   +1 more source

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

ISPRS 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, M. Pfennigbauer, H. Lehner, A. Ullrich, W. Wagner, N. Pfeifer   +5 more
doaj   +1 more source

Using Lidar Data to Analyse Sinkhole Characteristics Relevant for Understory Vegetation under Forest Cover\u2014Case Study of a High Karst Area in the Dinaric Mountains [PDF]

, 2015
In this article, we investigate the potential for detection and characterization of sinkholes under dense forest cover by using airborne laser scanning data.
Igor, Dakskobler, Irena, Bertoncelj, Lado, Kutnar, Milan, Kobal, Pirotti, Francesco   +4 more
core   +4 more sources

COMPARISON OF HIGH AND LOW DENSITY AIRBORNE LIDAR DATA FOR FOREST ROAD QUALITY ASSESSMENT [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Good quality forest roads are important for forest management. Airborne laser scanning data can help create automatized road quality detection, thus avoiding field visits.
K. Kiss, J. Malinen, T. Tokola
doaj   +1 more source

Estimating Stand and Fire-Related Surface and Canopy Fuel Variables in Pine Stands Using Low-Density Airborne and Single-Scan Terrestrial Laser Scanning Data

Remote Sensing, 2021
In this study, we used data from a thinning trial conducted on 34 different sites and 102 sample plots established in pure and even-aged Pinus radiata and Pinus pinaster stands, to test the potential use of low-density airborne laser scanning (ALS ...
Cecilia Alonso-Rego, Stéfano Arellano-Pérez, J. Guerra-Hernández, J. Molina-Valero, Adela Martínez-Calvo, C. Pérez-Cruzado, Fernando Castedo‐Dorado, Eduardo González-Ferreiro, J. Álvarez-González, A. D. Ruiz-González   +9 more
semanticscholar   +1 more source

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

Sensors, 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, Natalia Borowiec, Urszula Marmol   +2 more
doaj   +1 more source