Results 141 to 150 of about 124,228 (379)

Generation of High Spatial Resolution Terrestrial Surface from Low Spatial Resolution Elevation Contour Maps via Hierarchical Computation of Median Elevation Regions

, 2023
We proposed a simple yet effective morphological approach to convert a sparse Digital Elevation Model (DEM) to a dense Digital Elevation Model. The conversion is similar to that of the generation of high-resolution DEM from its low-resolution DEM.
Barman, Geetika, Sagar, B. S. Daya
core  

High‐resolution digital elevation model from tri‐stereo Pleiades‐1 satellite imagery for lava flow volume estimates at Fogo Volcano

, 2016
Resolving changes in topography through time using accurate high‐resolution digital elevation models (DEMs) is key to understanding active volcanic processes.
M. Bagnardi, P. González, A. Hooper
semanticscholar   +1 more source

A Perspective on Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed Stainless Steels

Advanced Engineering Materials, EarlyView.
This perspective article explores an innovative powder metallurgical approach to producing high‐nitrogen steels by utilizing a mixture of stainless steel and Si3N4. This mixture undergoes hot isostatic pressing followed by direct quenching. The article also examines adapting this method to laser powder bed fusion (PBF‐LB/M) to overcome nitrogen ...
Louis Becker, Felix Radtke, Jonathan Lentz, Simone Herzog, Christoph Broeckmann, Sebastian Weber   +5 more
wiley   +1 more source

Urban Building Height Extraction from Gaofen-7 Stereo Satellite Images Enhanced by Contour Matching

Remote Sensing
The traditional method for extracting the heights of urban buildings involves utilizing dense matching algorithms on stereo images to generate a digital surface model (DSM).
Yunfan Cui, Shuangming Zhao, Wanshou Jiang, Guorong Yu   +3 more
doaj   +1 more source

Vertical accuracy assessment for open-source digital elevation models using GPS control points and watershed basins delineation using GIS

Alexandria Engineering Journal, 2023
Digital elevation models (DEMs) are crucial for numerous assessments of the Earth's surface, so this research aim to evaluate the quality of several open source DEMs like advanced spaceborne thermal emission and reflection radiometer global DEM (ASTER ...
Loutfia Elsonbaty, Hossam El-Din Fawzy, Hossam Mohamed Moghazy, Gehan Rashed, Magda Hamed   +4 more
doaj  

Species-specific forest variable estimation using non-parametric modeling of multi-spectral photogrammetric point cloud data [PDF]

, 2012
The recent development in software for automatic photogrammetric processing of multispectral aerial imagery, and the growing nation-wide availability of Digital Elevation Model (DEM) data, are about to revolutionize data capture for forest management ...
Bohlin, Jonas, Fransson, Johan E.S., Olsson, Håkan, Wallerman, Jörgen   +3 more
core  

Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed FeCr(Si)N Stainless Steel

Advanced Engineering Materials, EarlyView.
The alloying element Nitrogen enhances stainless steel strength, corrosion resistance, and stabilizes austenite. This study develops austenitic FeCr(Si)N steel production via powder metallurgy. Fe20Cr and Si3N4 are hot isostatically pressed, creating an austenitic microstructure.
Louis Becker, Felix Radtke, Jonathan Lentz, Santiago Benito, Christoph Broeckmann, Sebastian Weber   +5 more
wiley   +1 more source

A robust, two‐parameter method for the extraction of drainage networks from high‐resolution digital elevation models (DEMs): Evaluation using synthetic and real‐world DEMs [PDF]

, 2012
Jon D. Pelletier
openalex   +1 more source

Spray Deposition for Solvent Annealing of Hybrid Poly(3,4‐Ethylenedioxythiophene) Polystyrene Sulfonate Cellulose Silver Nanowire Composite Electrodes Using a Roll‐to‐Roll Coater

Advanced Engineering Materials, EarlyView.
The fabrication and post‐treatment via solvent annealing of poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate‐based electrodes using spray deposition in a roll‐to‐roll setup are presented. The decrease in sheet resistance and its correlation with nanostructure and molecular structure in the electrodes as a function of the processing parameters is ...
Marie Betker, Benedikt Sochor, Elisabeth Erbes, Alisher Kurmanbay, Tim Erichlandwehr, Yanan Li, Peter Müller‐Buschbaum, Irene Fernandez‐Cuesta, Simone A. Techert, L. Daniel Söderberg, Stephan V. Roth   +10 more
wiley   +1 more source

Integration von hochauflösenden Fernerkundungs- und Geländemodelldaten für die Landschaftsvisualisierung [PDF]

Geographica Helvetica
This paper presents experiments for realistic landscape visualization using high resolution digital aerial photographs and elevation modeis. The natural environment of a river in northern Switzerland is visualized.
P. Pirchl, P. Hirtz, M. Suter, D. Nüesch   +3 more
doaj   +1 more source