Results 91 to 100 of about 148,027 (286)

AERIAL PHOTOGRAPHY AND PARCEL MAPPING FOR IMMOVABLE PROPERTY REGISTRATION IN ALBANIA [PDF]

Planimetric map production is a basic graphic documentation element of the Immovable Property Registration System in Albania and is one of the main objectives of the Land Market Action Plan.
Gjika, Maksimiljan, Leka, Edmond
core   +1 more source

Experimental Investigation of Photogrammetric Surface Analysis of Heat Shield Materials during Plasma Wind Tunnel Testing [PDF]

, 2013
The paper presents first results of an experimental analysis of surface recession using advanced photogrammetric tools. Based on image pairs acquired with two DSLR cameras, classical photogrammetry has been tried, but pixelwise image analysis with ...
Löhle, Stefan, Reimer, Thomas
core  

Classification of Fog Life‐Cycle Phases Using Ground‐Based and Satellite‐Based Observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In this study, the life‐cycle phases of radiation fog events—formation, maturity, and dissipation—are automatically classified at a ground station in Southwest Germany based on visibility trends and thresholds. We demonstrate that visibility detects radiation fog phases effectively, while its combination with ceilometer data can detect the life‐cycle ...
Maria Laura Pinilla, Eva Pauli, Johannes Antenor Senn, Jan Cermak   +3 more
wiley   +1 more source

Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR

River Research and Applications, EarlyView.
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, Theresa Himmelsbach, Florian Pöppl, Lucas Dammert, Martin Pfennigbauer, Gottfried Mandlburger   +5 more
wiley   +1 more source

Dam It, I’m Stranded: Evaluating Fish Stranding Downstream of Two Hydropeaking Dams in Northern Ontario

River Research and Applications, EarlyView.
ABSTRACT Globally, there has been an increase in the development and use of hydropower to produce energy. Hydropeaking is an operating regime that is used to meet real‐time energy demands; however, daily fluctuations in flows may result in fish becoming stranded.
Raegan Davis, Steven J. Cooke, Karen E. Smokorowski   +2 more
wiley   +1 more source

3D Gaussian Splatting aided Localization for Large and Complex Indoor-Environments [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The field of visual localization has been researched for several decades and has meanwhile found many practical applications. Despite the strong progress in this field, there are still challenging situations in which established methods fail.
V. Ress, J. Meyer, J. Meyer, W. Zhang, D. Skuddis, U. Soergel, N. Haala   +6 more
doaj   +1 more source

Development of a Computer Vision-Based Three-Dimensional Reconstruction Method for Volume-Change Measurement of Unsaturated Soils during Triaxial Testing [PDF]

, 2019
Problems associated with unsaturated soils are ubiquitous in the U.S., where expansive and collapsible soils are some of the most widely distributed and costly geologic hazards.
Xia, Xiaolong, Zhang, Xiong
core  

MScMS-II: an innovative IR-based indoor coordinate measuring system for large-scale metrology applications [PDF]

, 2010
According to the current great interest concerning large-scale metrology applications in many different fields of manufacturing industry, technologies and techniques for dimensional measurement have recently shown a substantial improvement.
Barbara Pralio, D Maisano, EM Mikhail, F Franceschini, F Franceschini, F Franceschini, GN Peggs, HC Longuet-Higgins, Luca Mastrogiacomo, M Fischler, M Galetto, Maurizio Galetto, MJ Puttock, RI Hartley, RY Tsai, T Luhmann, T Svoboda, TH Hopp, W Cuypers, WT Estler, Z Zhang   +20 more
core   +1 more source

UAVs unveil the role of small scale vegetation structure on wader nest survival

Remote Sensing in Ecology and Conservation, EarlyView.
In this study, we combine high‐resolution vegetation structural metrics derived from unmanned aerial vehicle (UAV) imagery with on‐field wader nest survival monitoring. We show that the immediate vegetation height and heterogeneity within a 2‐meter buffer surrounding the clutch of the recorded ground‐nesting wader species positively influenced its ...
Miguel Silva‐Monteiro, Miguel Villoslada, Thaisa Bergamo, Triin Kaasiku, Camilo Carneiro, David Kleijn   +5 more
wiley   +1 more source

Forest in situ observations using unmanned aerial vehicle as an alternative of terrestrial measurements

Forest Ecosystems, 2019
Background Lately, terrestrial point clouds have drawn attention as a new data source for in situ forest investigations. So far, terrestrial laser scanning (TLS) has the highest data quality among all terrestrial point cloud data in terms of geometric ...
Xinlian Liang, Yunsheng Wang, Jiri Pyörälä, Matti Lehtomäki, Xiaowei Yu, Harri Kaartinen, Antero Kukko, Eija Honkavaara, Aimad E. I. Issaoui, Olli Nevalainen, Matti Vaaja, Juho-Pekka Virtanen, Masato Katoh, Songqiu Deng   +13 more
doaj   +1 more source