Results 61 to 70 of about 54,994 (234)
Mapping and classification of ecologically sensitive marine habitats using unmanned aerial vehicle (UAV) imagery and object-based image analysis (OBIA) [PDF]
, 2018 Nowadays, emerging technologies, such as long-range transmitters, increasingly miniaturized components for positioning, and enhanced imaging sensors, have led to an upsurge in the availability of new ecological applications for remote sensing based on ...
Ardizzone, Domenico +4 more
core +1 more source
Earth Surface Dynamics, 2019 . Images captured by unmanned aerial vehicles (UAVs) and processed by structure-from-motion (SfM) photogrammetry are increasingly used in geomorphology to obtain high-resolution topography data.
He Zhang +5 more
semanticscholar +1 more source
Identifying mechanisms of shore platform erosion using Structure‐from‐Motion (SfM) photogrammetry [PDF]
Earth Surface Processes and Landforms, 2019 AbstractShore platforms control wave energy transformation which, in turn, controls energy delivery to the cliff toe and nearshore sediment transport. Insight into shore platform erosion rates has conventionally been constrained at millimetre‐scales using micro‐erosion metres, and at metre‐scales using cartographic data.
Zuzanna M. Swirad +2 more
openaire +2 more sources
Controlled photogrammetry system for determination of volume and surface features in soils
MethodsX, 2021 Quantitative and qualitative determination of total volume and surface features of a soil specimen is important in geotechnical engineering. Available methods suffer from a variety of shortcomings such as sample disturbance, equipment calibration, and ...
Jared Suchan, Shahid Azam
doaj +1 more source
Science & justice : journal of the Forensic Science Society, 2021 The recovery of three-dimensional footwear impressions at crime scenes can be a challenge but can also yield important investigative data. Traditional methods involve casting 3D impressions but these methods have limitations: the trace is usually ...
Hannah J Larsen, M. Budka, M. Bennett
semanticscholar +1 more source
iForest - Biogeosciences and Forestry, 2018 Several studies have been carried out to investigate soil compaction and rutting after logging vehicle traffic, based on time consuming and punctual field measurements.
Cambi M +6 more
doaj +1 more source
3D MOBILE MAPPING WITH A LOW COST UAV SYSTEM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 In order to accomplish the automatic mobile mapping task in a small area of interest, a low cost UAV system is proposed in this paper. Multiple sensors including a global shutter camera and an inertial measurement unit are calibrated and synchronized to
J. Li +6 more
doaj +1 more source
Shallow Water Bathymetry Mapping from UAV Imagery based on Machine Learning [PDF]
, 2019 The determination of accurate bathymetric information is a key element for near offshore activities, hydrological studies such as coastal engineering applications, sedimentary processes, hydrographic surveying as well as archaeological mapping and ...
A. Georgopoulos +4 more
core +2 more sources
DronesThe development of unmanned aerial spraying systems (UASSs) has significantly transformed pest and disease control methods of crop plants. Precisely adjusting pesticide application rates based on the target conditions is an effective method to improve ...
Qi Bing +4 more
semanticscholar +1 more source
Water, 2022 Accurate measurements of sediment flushing cone geometry (SFCG) are essential for determining sediment removal efficiency in reservoirs. SFCG measurements are related to the point-to-point height that affects bathymetry accuracy, and they are used to ...
Hadi Haghjouei +4 more
semanticscholar +1 more source