Results 31 to 40 of about 48,254,805 (247)

TERRA: Terrain Extraction from elevation Rasters through Repetitive Anisotropic filtering

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2020
Over the past decades, several filters have been developed to derive a Digital Terrain Model (DTM) from a Digital Surface Model (DSM), by means of filtering out aboveground objects such as vegetation.
Anton Pijl   +5 more
doaj   +1 more source

Improvement of Terrain Entropy Calculation for Grid Digital Elevation Models Considering Spatial Structural Features

open access: yesApplied Sciences
Existing methods for calculating terrain entropy in grid digital elevation models (DEMs) often face computational anomalies in specific topographies within small windows.
Fangbin Zhou   +3 more
doaj   +1 more source

Analysis of methods for generation of digital relief model and accuracy evaluation using digital photogrammetry technology

open access: yesGeodesy and Cartography, 2012
Digital photogrammetry methods are applied for generation of orthophotographic maps. For this purpose, orientation of aerial photographs has been carried out and generated a digital terrain model of the Earth’s surface (DEM), digital orthophotographic ...
Birutė Ruzgienė
doaj   +1 more source

An Integrated Algorithm for Extracting Terrain Feature-Point Clusters Based on DEM Data

open access: yesRemote Sensing, 2022
Terrain feature points, such as the peaks and saddles, are the basic framework of surface topography and its undulations, which significantly affect the spatial distribution of surface topography.
Jinlong Hu   +4 more
doaj   +1 more source

Bioinspired Adaptive Surfaces for Intelligent Liquid Manipulation: Progressing From Passive and Active to Hybrid Strategies

open access: yesAdvanced Materials, EarlyView.
This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao   +3 more
wiley   +1 more source

DEM in quantitative analysis of structural geomorphology: application and prospect

open access: yesDizhi lixue xuebao, 2021
Digital elevation model (DEM) is used to realize the digital simulation of terrain surface (i.e. the digital representation of terrain surface shape) through the limited terrain elevation data.
CAO Pengju   +5 more
doaj   +1 more source

Seamless Mechanical Programming Through Hybrid Epoxy–Acrylate Printing for Soft–Rigid Robots

open access: yesAdvanced Materials, EarlyView.
Hybrid epoxy‐acrylate printing enables seamless fabrication of soft–rigid robotic systems with covalently integrated interfaces and functionally graded mechanics. Grayscale exposure expands the accessible material space, enabling spatially programmed actuation through patterned stiffness while revealing the mechanics and durability of continuously ...
David C. Bershadsky   +3 more
wiley   +1 more source

Effect of DEM Used for Terrain Correction on Forest Windthrow Detection Using COSMO SkyMed Data

open access: yesRemote Sensing
Preprocessing Synthetic Aperture Radar (SAR) data is a crucial initial stage in leveraging SAR data for remote sensing applications. Terrain correction, both radiometric and geometric, and the detection of layover/shadow areas hold significant importance
Michele Dalponte   +2 more
doaj   +1 more source

Evaluation of selected methods for extracting digital terrain models from satellite born digital surface models in urban areas [PDF]

open access: yes, 2011
For the generation of 3D city models from satellite stereo imagery beyond the generation of digital surface models (DSM) from stereo data the next crucial step is the separation of urban 3D objects from ground.
Arefi, Hossein   +2 more
core  

Recent Advances of Slip Sensors for Smart Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang   +8 more
wiley   +1 more source

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