Results 181 to 190 of about 27,606 (334)

Accuracy analysis of direct georeferenced UAV images utilising low-cost navigation sensors [PDF]

open access: yes, 2014
Unmanned aerial vehicles (UAVs), also known as unmanned airborne systems (UAS) or remotely piloted airborne systems (RPAS), are an established platform for close range airborne photogrammetry. Compared to manned platforms, the acquisition of local remote
Briese, Christian   +5 more
core   +1 more source

Bayesian Analysis of Spatial Generalized Linear Mixed Models with Laplace Random Fields [PDF]

open access: yesarXiv, 2019
Gaussian random field (GRF) models are widely used in spatial statistics to capture spatially correlated error. We investigate the results of replacing Gaussian processes with Laplace moving averages (LMAs) in spatial generalized linear mixed models (SGLMMs).
arxiv  

High‐throughput phenotyping of stay‐green in a sorghum breeding program using unmanned aerial vehicles and machine learning

open access: yesThe Plant Phenome Journal, Volume 8, Issue 1, December 2025.
Abstract As climate change continues to influence global weather patterns, the frequency and severity of drought conditions are expected to increase, posing a significant challenge to crop production. In sorghum (Sorghum bicolor L. Moench), a key cereal crop, the stay‐green trait is of particular importance as a measure of how well a genotype can ...
N. Ace Pugh   +5 more
wiley   +1 more source

Microeconomic and Geo-physical Data Integration for Agri-environmental Analysis, Georeferencing FADN Data: A Case Study in Italy [PDF]

open access: yes
The authors, inside a TAPAS action, have developed a methodology - based on the integration between FADN data with statistical, administrative and cartographic information - to improve the production of statistical data related to agricultural policies ...
Fais, Andrea   +2 more
core   +1 more source

On‐Land Pinniped Classification of Multiple Species and Demographic Classes on Multiple Substrates Using Deep Learning and Aerial Imagery

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 4, April 2025.
ABSTRACT Pinniped abundance and demographic monitoring is the foundation of informed decisions about conservation, management and protection. However, current aerial and on the ground monitoring techniques are generally resource intensive, may suffer detection error and can present hazards to on‐site surveyors.
Silas Santini   +5 more
wiley   +1 more source

Taxing dissent: The impact of a social media tax in Uganda [PDF]

open access: yesarXiv, 2019
We examine the impact of a new tool for suppressing the expression of dissent---a daily tax on social media use. Using a synthetic control framework, we estimate that the tax reduced the number of georeferenced Twitter users in Uganda by 13 percent. The estimated treatment effects are larger for poorer and less frequent users.
arxiv  

Terrestrial Spatial Distribution and Summer Abundance of Antarctic Fur Seals (Arctocephalus gazella) Near Palmer Station, Antarctica, From Drone Surveys

open access: yesEcology and Evolution, Volume 15, Issue 4, April 2025.
A summer population of nonbreeding Antarctic fur seals arrives each year at the west Antarctic Peninsula, but remains poorly characterized amid the rapid climatic and ecological changes that are restructuring the region's environment and food web. We carried out a campaign of drone surveys to map the occurrences of Antarctic fur seals across a variety ...
Gregory D. Larsen   +5 more
wiley   +1 more source

Application of Generalized Partial Volume Estimation for Mutual Information based Registration of High Resolution SAR and Optical Imagery [PDF]

open access: yes, 2008
Mutual information (MI) has proven its effectiveness for automated multimodal image registration for numerous remote sensing applications like image fusion.
Reinartz, Peter, Suri, Sahil
core  

GEOREFERENCING OF TLS DATA FOR INDUSTRIAL INDOOR COMPLEX SCENES: BEYOND CURRENT SOLUTIONS [PDF]

open access: diamond, 2012
Jean-François Hullo   +3 more
openalex   +1 more source

LiDAR-based Registration against Georeferenced Models for Globally Consistent Allocentric Maps [PDF]

open access: yesarXiv
Modern unmanned aerial vehicles (UAVs) are irreplaceable in search and rescue (SAR) missions to obtain a situational overview or provide closeups without endangering personnel. However, UAVs heavily rely on global navigation satellite system (GNSS) for localization which works well in open spaces, but the precision drastically degrades in the vicinity ...
arxiv  

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