Results 31 to 40 of about 219,149 (197)
Towards the optimal Pixel size of dem for automatic mapping of landslide areas [PDF]
, 2017 Determining appropriate spatial resolution of digital elevation model (DEM) is a key step for effective landslide analysis based on remote sensing data. Several studies demonstrated that choosing the finest DEM resolution is not always the best solution.
Borkowski, A. +2 more
core +3 more sources
Airborne laser scanning data as a source of field topographical characteristics
Plant, Soil and Environment, 2013 One of the factors frequently affecting yields is topography. Topographic data can be obtained from various sources with different precision. This work evaluates suitability of airborne laser scanning data for use as another source of topographical ...
J. Kumhálová +3 more
doaj +1 more source
Remote Sensing, 2021 Airborne Laser Scanning (ALS) is a technology often used to study forest areas. The main area of application of ALS in forests is collecting data to determine the height of individual trees and entire stands, tree density and stand biomass.
Wioleta Błaszczak-Bąk +4 more
doaj +1 more source
Theoretical Lidar Point Density for Topographic Mapping in the Largest Scales [PDF]
, 2010 When ordering LiDAR data, LiDAR point density per surface unit is important information with decisive influence on the price of the LiDAR survey. The paper first deals with the theoretical calculation of the minimum LiDAR point density, necessary for the
Crosilla, Fabio +2 more
core +1 more source
, 2021 With cut-to-length harvesters, tree stems are measured and cut into different timber assortments at the time of felling. These measurement data collected from harvested trees can be used for decision-support at different levels of the forest industry ...
Jon Söderberg +4 more
semanticscholar +1 more source
Remote Sensing, 2018 LiDAR technology is finding uses in the forest sector, not only for surveys in producing forests but also as a tool to gain a deeper understanding of the importance of the three-dimensional component of forest environments.
Niccolò Marchi +2 more
doaj +1 more source
Transmittance of Airborne Laser Scanning Pulses for Boreal Forest Elevation Modeling
Remote Sensing, 2011 The transmittance of laser pulses through the forest canopy was studied as a function of forest attributes (inventory parameters) and the scanning angle from the point of view of elevation modeling.
Markus Holopainen +3 more
doaj +1 more source
Detection and quantification of viable airborne bacteria and fungi using solid-phase cytometry [PDF]
, 2009 This protocol describes the use of solid-phase cytometry for the enumeration of airborne bacteria and fungi. In contrast with conventional methods, accurate results can be obtained in real time, especially for air samples with low numbers of ...
Coenye, Tom, Nelis, Hans, Vanhee, Lies
core +1 more source
Isprs Journal of Photogrammetry and Remote Sensing, 2019 Quantitative comparisons of tree height observations from different sources are scarce due to the difficulties in effective sampling. In this study, the reliability and robustness of tree height observations obtained via a conventional field inventory ...
Yunsheng Wang +9 more
semanticscholar +1 more source
Orientation of Airborne Laser Scanning Point Clouds with Multi-View, Multi-Scale Image Blocks
Sensors, 2009 Comprehensive 3D modeling of our environment requires integration of terrestrial and airborne data, which is collected, preferably, using laser scanning and photogrammetric methods.
Henrik Haggrén +3 more
doaj +1 more source