Results 81 to 90 of about 2,045,190 (230)
A validated 3D point‐cloud analysis workflow for the creation of seagrass canopy height models
Methods in Ecology and Evolution, EarlyView.Abstract Seagrasses support highly productive ecosystems in both temperate and tropical waters and provide essential ecosystem services. Despite their importance, the vertical structure of seagrasses (i.e. the canopy) remains poorly characterised at the microscale, even though it is a strong predictor of ecological processes that influence both ...
Daniele Ventura
wiley +1 more source
Detection of windthrown trees using airborne laser scanning
International Journal of Applied Earth Observation and Geoinformation, 2014 Abstract In this study, a method has been developed for the detection of windthrown trees under a forest canopy, using the difference between two elevation models created from the same high density (65 points/m2) airborne laser scanning data. The difference image showing objects near the ground was created by subtracting a standard digital elevation ...
Mattias Nyström +3 more
openaire +2 more sources
Terrestrial laser scan error in the presence of dense ground vegetation [PDF]
, 2011 Terrestrial Laser Scan (TLS) data are seeing increasing use in geology, geomorphology, forestry and urban mapping. The ease of use, affordability and operational flexibility of TLS suggests that demand for it is likely to increase in large scale mapping ...
Fotheringham, Stewart +5 more
core +2 more sources
Methods in Ecology and Evolution, EarlyView.Abstract Tree crowns are complex, three‐dimensional structures whose morphology varies among species, individuals and environments. Although light detection and ranging (LiDAR) provides high‐resolution, single‐tree point clouds that advance species discrimination and the assessment of intraspecific variation in situ, crown shape is still commonly ...
Ladislav Hodač +5 more
wiley +1 more source
An assessment of the use of airborne LiDAR for estimating growth of Sitka spruce (Picea sitchensis) plantation forestry at Kielder Forest, UK [PDF]
, 2007 A growing need exists for the collection of accurate and up-to-date information on forest growth rates for management purposes. Recent studies indicate that airborne laser scanning (ALS) offers a quicker and more cost-effective approach than the ...
Woodget, Amy Sara
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Mapping curbstones in airborne and mobile laser scanning data
International Journal of Applied Earth Observation and Geoinformation, 2012 The high point densities obtained by today's laser scanning systems enable the extraction of various features which are traditionally mapped by photogrammetry or land surveying. While significant progress has been made in the extraction of buildings and trees from dense point clouds, little research has been performed on the extraction of roads.
Liang Zhou, George Vosselman
openaire +3 more sources
Applications of airborne and terrestrial laser scanning to paleoseismology [PDF]
Geosphere, 2012 Paleoseismic investigations aim to document past earthquake characteristics such as rupture location, frequency, distribution of slip, and ground shaking intensity—critical parameters for improved understanding of earthquake processes and refined earthquake forecasts. These investigations increasingly rely on high-resolution ( 2 /m.
D. E. Haddad +9 more
openaire +1 more source
Landslide monitoring using airborne laser scanning on the example of a ski resort on Sakhalin Island
Известия Томского политехнического университета: Промышленная кибернетикаThe article presents the results of monitoring landslide processes in the area of a ski resort located near the city of Yuzhno-Sakhalinsk on Sakhalin Island.
Maksim Yu. Baborykin
doaj +1 more source
Combined Approach to Locate Medieval Fortified Manor Houses in Central Moravia (the Czech Republic)
Archaeometry, EarlyView.ABSTRACT A systematic prospection of medieval fortified manor houses (FMHs) in Central Moravia (Czech Republic) was conducted with the aim of mapping their distribution and facilitating both further scholarly research and more effective heritage protection by responsible institutions.
Martin Moník +10 more
wiley +1 more source
Ajustamento simultâneo do bloco de faixas do laser scanner aerotransportado (ALS) [PDF]
, 2008 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2008A discrepância vertical na zona de sobreposição lateral é uma distorção da medida original de difícil ...
Temba, Plinio da Costa
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