Results 51 to 60 of about 124,228 (379)
3D Visualization of Large Digital Elevation Model (DEM) Data Set [PDF]
, 2002 With the rapid development of Earth observation technologies, raster data has become the main Geographic Information System (GIS) data source. GIS should be able to manage and process huge raster data sets. In this paper, the problem of 3-dimensional visualization of huge DEM data sets and its corresponding images data sets in GIS was addressed. A real-
Ai-Nai Ma +3 more
openaire +2 more sources
Fusion of Urban TanDEM-X raw DEMs using variational models [PDF]
, 2018 Recently, a new global Digital Elevation Model (DEM) with pixel spacing of 0.4 arcseconds and relative height accuracy finer than 2m for flat areas (slopes 20%) was created through the TanDEM-X mission.
Bagheri, Hossein +2 more
core +2 more sources
ASTER Global Digital Elevation Model (GDEM) and ASTER Global Water Body Dataset (ASTWBD)
Remote Sensing, 2020 The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a 14-channel imaging instrument operating on NASA’s Terra satellite since 1999. ASTER’s visible–near infrared (VNIR) instrument, with three bands and a 15 m Instantaneous field
M. Abrams, R. Crippen, H. Fujisada
semanticscholar +1 more source
ANALYSIS AND COMPARISON OF SRTM3 DEM AND ASTER GDEM V2 [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Global Geographic Information Resources Construction and Maintenance Renewal Project is in urgent need of digital elevation model worldwide. At present, the errors of ASTER GDEMv2 and SRTM3 DEM data widely used are unevenly distributed.
J. Shen, W. L. Han, L. B. Zhang, J. Ge
doaj +1 more source
Digital Elevation Model Quality Assessment Methods: A Critical Review
Remote Sensing, 2020 Digital elevation models (DEMs) are widely used in geoscience. The quality of a DEM is a primary requirement for many applications and is affected during the different processing steps, from the collection of elevations to the interpolation implemented ...
L. Polidori, M. Hage
semanticscholar +1 more source
A NEW HIGH-RESOLUTION ELEVATION MODEL OF GREENLAND DERIVED FROM TANDEM-X [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 In this paper we present for the first time the new digital elevation model (DEM) for Greenland produced by the TanDEM-X (TerraSAR add-on for digital elevation measurement) mission.
B. Wessel +4 more
doaj +1 more source
Comparison and analysis of CryoSat DEM and the several Antarctic DEM
地质科技通报, 2021 Antarctica is covered by huge snow and ice, and its geological structure is bounded by the Trans-Antarctic Mountains, and is generally divided into the East Antarctic Shield and the West Antarctic Active Zone.
Wenli Yue +4 more
doaj +1 more source
The Application of ALOS/PALSAR InSAR to Measure Subsurface Penetration Depths in Deserts [PDF]
, 2017 Spaceborne Synthetic Aperture Radar (SAR) interferometry has been utilised to acquire high-resolution Digital Elevation Models (DEMs) with wide coverage, particularly for persistently cloud-covered regions where stereophotogrammetry is hard to apply ...
Li, G, Muller, J-P, Xiong, S
core +1 more source
Journal of Geographic Information System, 2010 High resolution data have high relief displacement in hilly terrains. Development of Digital Elevation model helps to assess bio resources more accurately in such terrains. While estimating bio resources in the Himalayan hilly terrain using multispectral
V. Singh, P. Ray, A. T. Jeyaseelan
semanticscholar +1 more source
Research on the Method of Building Dem by Contours
ITM Web of Conferences, 2017 Digital elevation model (DEM), as an important product of digital photogrammetry and digital surveying and mapping, it plays an increasingly important role in the field of surveying and mapping and geographic information system.
Zhu Ji-Wen +4 more
doaj +1 more source