Results 71 to 80 of about 20,471 (284)

Accuracy of a DTM derived from full-waveform laser scanning data under unstructured eucalypt forest: a case study

, 2010
A Digital Terrain Model (DTM) is fundamental for extracting several forest canopy structure metrics from data acquired with small-footprint airborne laser scanning (ALS).
Gomes Pereira, L., Gonçalves, G.
core  

Mathematical Digital Terrain Model (DTM) Data for Testing DTM Generation Methodologies and Software

, 2021
Developing a method for interpolation of data points for forming DTM involves thousands of complicated computations. Checking of such computations requires errorless and well-defined input data and end results from a large number of DTM points. Measured,
A. El-Ashmawy, Dr. Khalid L.
core  

Wall‐to‐wall Amazon forest height mapping with Planet NICFI, Aerial LiDAR, and a U‐Net regression model

Remote Sensing in Ecology and Conservation, EarlyView.
Tree canopy height is a key indicator of forest biomass and structure, yet accurate mapping across the Amazon remains challenging. Here, we generated a canopy height map of the Amazon forest at ~4.8 m resolution using Planet NICFI imagery and a deep learning U‐Net model trained with airborne LiDAR data.
Fabien H. Wagner, Ricardo Dalagnol, Griffin Carter, Mayumi C. M. Hirye, Shivraj Gill, Le Bienfaiteur Sagang Takougoum, Samuel Favrichon, Michael Keller, Jean P. H. B. Ometto, Lorena Alves, Cynthia Creze, Stephanie P. George‐Chacon, Shuang Li, Zhihua Liu, Adugna Mullissa, Yan Yang, Erone G. Santos, Sarah R. Worden, Martin Brandt, Philippe Ciais, Stephen C. Hagen, Sassan Saatchi   +21 more
wiley   +1 more source

SAVEMEDCOASTS. Un progetto europeo di protezione civile per la valutazione degli impatti di aumento del livello marino e dei rischi costieri nel Mediterraneo

GEOmedia, 2019
SAVEMEDCOASTS (www.savemedcoasts.eu) aims to respond to the need for people and assets prevention from natural disasters in Mediterranean coastal zones placed at less than 1-2 m above sea level, which are vulnerable to sea level rise under the climate ...
Marco Anzidei
doaj  

Evaluation of elevation parameter determination by Global Navigation Satellite Systems’ sports receivers: A preliminary study

Baltic Journal of Health and Physical Activity
Introduction: Sports Global Navigation Satellite Systems’ receivers have been providing athletes, coaches, and scientists with valuable information on movement for over two decades.
Tomasz SZOT, Marcin SONTOWSKI
doaj   +1 more source

Automatic generation of digital terrain models from Cartosat-1 stereo images

, 2009
This paper proposes a novel algorithm for automatic Digital Terrain Model (DTM) generation from high resolution CARTOSAT-1 satellite images generating accurate and reliable results.
Arefi, Hossein, Reinartz, Peter, d'Angelo, Pablo, Mayer, Helmut   +3 more
core  

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

Remote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu, Nereoh Leley, Caleb W. T. Ngaba, Anthony Macharia, Henry Muchiri, Abdalla Kisiwa, Martin Ehbrecht, Delphine Clara Zemp   +7 more
wiley   +1 more source

Impiego sperimentale del drone ad ala fissa nell’elaborazione dell’indice di qualità morfologica (IQM) dei corpi idrici

GEOmedia, 2017
The directive 2000/60/EC (EU Water Framework Directive) provides procedures for identifying the ecological status of each water body by considering the quality of the biological community and the hydrological and chemical characteristics of the water ...
Fabrizio Stella, Rodolfo Bassan, Antonio Cavinato, Giovanni Lusiani   +3 more
doaj  

Modelling forest dynamics using integral projection models and repeat lidar

Remote Sensing in Ecology and Conservation, EarlyView.
Forests are facing increasing pressure from climate change and disturbance, yet linking individual tree trajectories to whole‐forest outcomes remains a major challenge. Our study integrates repeat airborne lidar with an Integral Projection Model to analyse demographic processes at the landscape scale.
Alice Rosen, Robin Battison, Christina M. Hernández, Oliver G. Spacey, Jessica McLean, Suzanne M. Prober, Samuel J. L. Gascoigne, Sean McMahon, Tommaso Jucker, Roberto Salguero‐Gómez   +9 more
wiley   +1 more source

DTM's Remembering Vera

, 2017
I wrote my own recollection of Vera Rubin recently. Her long time home institution, the Department of Terrestrial Magnetism (DTM) of the Carnegie Institution of Washington recently held a lunch in her honor. Unfortunately my travel schedule precluded me from attending.
openaire   +2 more sources