Results 91 to 100 of about 21,436 (210)
Police drone technology could be utilized to support forensic scene investigations. If the challenges of implementing new technologies can be overcome, drones could improve operational efficiency, interpretation issues and add investigative value in the courtroom. ABSTRACT Unoccupied aerial systems (UAS; otherwise known as Uncrewed Aerial Vehicles (UAV)
Clare Barrett +2 more
wiley +1 more source
Geospatial products, such as digital elevation models (DEMs), are important topographic tools for tackling local flood studies. This study investigates the contribution of LiDAR elevation data in DEM generation based on fixed-wing unmanned aerial vehicle
Jairo R. Escobar Villanueva +2 more
doaj +1 more source
Rampant Arch and Its Optimum Geometrical Generation [PDF]
Gothic art was developed in western Europe from the second half of the 12th century to the end of the 15th century. The most characteristic Gothic building is the cathedral.
Alcayde García, Alfredo +5 more
core +2 more sources
Building‐Scale Flood Hazard Modelling for Risk Assessment of Cultural Heritage
ABSTRACT Flooding is among the most frequent natural hazards threatening cultural heritage sites, yet current flood hazard studies often operate at urban or regional scales. While building‐scale damage models exist, they generally rely on flood depth inputs from large‐scale inundation models, inputs that may fail to capture the internal complexity of ...
Chiara Arrighi +2 more
wiley +1 more source
Aerial photogrammetry procedure optimized for micro uav [PDF]
This paper proposes the automatic aerial photogrammetry procedure optimized for Micro UAV that has ability of autonomous flight. The most important goal of our proposed method is the reducing the processing cost for fully automatic reconstruction of ...
T. Anai +4 more
doaj +1 more source
Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR
ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert +5 more
wiley +1 more source
Maps annotated with the height and distance of surrounding landscape features were provided to surveyors estimating bird flight height during ornithological vantage point surveys. Our results suggest that annotated maps can significantly reduce variability in the surveyors' estimates, improving accuracy and collision risk predictions.
Nicola Largey +3 more
wiley +1 more source
RESEARCH ON REEF BATHYMETRIC SURVEY OF UAV STEREOPAIR BASED ON TWO-MEDIUM PHOTOGRAMMETRY [PDF]
This paper is based on the principles of two-medium photogrammetry, with the purpose to perform a bathymetric survey of a reef in the South China Sea, using aerial imagery acquired by UAV.
D. Ye, M. Liao, A. Nan, E. Wang, G. Zhou
doaj +1 more source
ABSTRACT Performing ecohydraulic assessments of salmon habitat is essential for planning and evaluating management actions. Current in situ and modelling approaches, although accurate, can be time‐consuming and expensive, which limits the areal extent of the study.
Jared G. Stieve +2 more
wiley +1 more source
A new technique based on mini-UAS for estimating water and bottom radiance contributions in optically shallow waters [PDF]
The mapping of nearshore bathymetry based on spaceborne radiometers is commonly used for QC ocean colour products in littoral waters. However, the accuracy of these estimates is relatively poor with respect to those derived from Lidar systems due in part
Barrado Muxí, Cristina +2 more
core +1 more source

