Results 61 to 70 of about 12,614,375 (254)

Determining the Optimum Number of Ground Control Points for Obtaining High Precision Results Based on UAS Images

, 2018
Ground control points (GCPs) are used in the process of indirectly georeferencing Unmanned Aerial Systems (UAS) images. A minimum of three ground control points (GCPs) is required but increasing the number of GCPs will lead to higher accuracy of the ...
Florian Statescu, Ana-Ioana Breaban, Valeria-Ersilia Oniga   +2 more
core   +1 more source

Standardized two-factor structural equation model of the C-GCPS- R.

, 2023
Standardized two-factor structural equation model of the C-GCPS- R.
Shumin Hao (17125134), Feng Li (30515), Bing Liang (3475652), Yuejin Wu (560004), Jiaxin Zhang (1836484)   +4 more
core   +1 more source

Deciphering the Palimpsest: Chronological Uncertainty and the Interpretation of Mining Landscapes at Písečný vrch (Czech Republic)

Archaeological Prospection, EarlyView.
ABSTRACT We investigated the Písečný vrch (Czech Republic), a site exploited for quartz mining in both prehistoric times and the 20th century. Due to their morphological similarity across all mining periods, the differentiation between pits with archaeological potential and recent ones is challenging.
Jan Fišer, Petr Krištuf, Jan Kropáček, Vojtěch Barták, Lenka Starková, Vítězslav Moudrý   +5 more
wiley   +1 more source

Automating Ground Control Point Detection in Drone Imagery: From Computer Vision to Deep Learning

Remote Sensing
Drone-based photogrammetry typically requires the task of georeferencing aerial images by detecting the center of Ground Control Points (GCPs) placed in the field. Since this is a very labor-intensive task, it could benefit greatly from automation.
Gonzalo Muradás Odriozola, Klaas Pauly, Samuel Oswald, Dries Raymaekers   +3 more
doaj   +1 more source

Measurement of surface velocity in open channels using a lightweight remotely piloted aircraft system

Geomatics, Natural Hazards & Risk, 2017
In this paper, a low-cost remotely piloted aircraft system (RPAS) technique is proposed for measurement of the surface velocity in rivers or channels with low surface velocity and small discharge.
M. Bolognesi, G. Farina, S. Alvisi, M. Franchini, A. Pellegrinelli, P. Russo   +5 more
doaj   +1 more source

Assessing the Accuracy of Digital Surface Models Derived from Optical Imagery Acquired with Unmanned Aerial Systems

Drones, 2019
Small unmanned aerial systems (UASs) equipped with an optical camera are a cost-effective strategy for topographic surveys. These low-cost UASs can provide useful information for three-dimensional (3D) reconstruction even if they are equipped with a low ...
Salvatore Manfreda, Petr Dvorak, Jana Mullerova, Sorin Herban, Pietro Vuono, José Juan Arranz Justel, Matthew Perks   +6 more
doaj   +1 more source

Regulatory harmonization: Evolution, globalization and future directions

British Journal of Clinical Pharmacology, EarlyView.
Regulatory harmonization has become an increasingly important and accepted approach to streamline regulatory review processes and expedite access to safe, effective and high‐quality medicines globally. This review explores the evolution and current status of regulatory harmonization, convergence and reliance initiatives.
Orin Chisholm, Elaine Y. L. Blair, Christine Y. Lu   +2 more
wiley   +1 more source

Optimizing photogrammetric DEMs for glacier volume change assessment using laser-scanning derived ground-control points

Photogrammetric processing of archival stereo imagery offers the opportunity to reconstruct glacier volume changes for regions where no such data exist, and to better constrain the contribution to sea-level rise from small glaciers and ice caps.
Barrand NE, Murray T, Mills JP, Barr SL, James TD   +4 more
core   +5 more sources

Updating Orthophotos around Gas Pipelines based on "Cloud Control" Photogrammetry [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
As a clean energy source, natural gas is widely used and primarily transported through long-distance pipelines. Regular maintenance and inspection of long-distance gas pipelines are crucial tasks.
L. Qin, Y. Liu, X. Zhao, Y. Duan, Y. Duan   +4 more
doaj   +1 more source

Beyond antimicrobials: Ecological nano‐strategies for rebalancing dysbiotic oral microbial homeostasis

BMEMat, EarlyView.
Oral microbial homeostasis, a dynamic host‐microbe balance, is vital in infectious diseases. Conventional antibiotics often disrupt this homeostasis, spurring interest in nanomaterials for oral microbial homeostasis rebalancing. This review outlines nanomaterial strategies across three ecological levels (population/community, ecosystem, and cross ...
Chen Hu, Aohan Luan, Yujun Yang, Linlin Wang, Huilin Wang, Ning Wang, Guixin He, Yajie Yang, Rabiya Noor, Jawad Hussain, Longquan Shao   +10 more
wiley   +1 more source