搜索结果: 1-14 共查到“地图制图技术 elevation”相关记录14条 . 查询时间(0.093 秒)
NSF,NGA release first unclassified digital elevation models of Alaska
NSF NGA first unclassified digital elevation models Alaska
2016/9/12
The National Science Foundation (NSF) and the National Geospatial-Intelligence Agency (NGA) have publicly released new three-dimensional topographic maps of Alaska in support of a White House Arctic i...
A Comparison Between Canadian Digital Elevation Data (CDED) and Srtm Data of Mount Carleton in New Brunswick (Canada)
Relative Accuracy Canadian Digital Elevation Data (CDED) SRTM Icesat Lidar
2015/12/18
Digital elevation models (DEM) are basic part of the information about an area. Knowledge about DEM quality is important for their use in management projects, engineering projects and geomorphologic s...
Approximating LIDAR Ground Elevation Data by Higher-Order Tensor-Product B-Splines
DEM/DTM LIDAR Surface Modelling Reconstruction GIS
2015/12/8
We consider, in this paper, the problem of reconstructing the surface from LIDAR ground elevations. We reconstruct the surface by first rotating the LIDAR scan-lines so that they are parallel to the Y...
A New Approach for Checking Elevation Contradiction of Contour elevation
GIS Algorithms Elevation Contradiction of Contours Quality Checking for Spatial Data
2015/12/3
The elevation contradiction of contours is an important question in the quality checking for spatial data in geographical information system. This paper presents a new approach to check the elevation ...
AUTOMATIC BUILDING RECONSTRUCTION FROM A DIGITAL ELEVATION MODEL AND CADASTRAL DATA:AN OPERATIONAL APPROACH
Digital Elevation Model Cadastral Maps RANSAC Plane Extraction Building Polyhedral Surface ThreeDimensional Modeling
2015/8/31
In this paper, we tackle the problem of automatic building reconstruction using digital elevation model and cadastral data. We aim at massive production of 3D urban models and present thus an algorith...
Hydrologic analysis of a flood based on a new Digital Elevation Model
Hydrologic analysis DEM GIS HEC-HMS Flood Natural disaster
2015/7/27
These The present study aims to simulate the hydrologic processes of a flood, based on a new, highly accurate Digital Elevation Model (DEM). The DEM is provided by the Ministry of Land, Infrastructure...
The Digital Elevation Model 1:25.000 (DEM 25) for The Federal Republic of Germany
Fusion DEM/DTM Multiresolution
2015/7/9
The fusion respectively the homogenisation of the digital terrain models of the federal states (L鋘der) of Germany to
a nationwide digital elevation model for Germany is described. The aim is a nation...
The Importance of Understanding Error in Lidar Digital Elevation Models
Laser Scanning Error Urban Accuracy
2015/7/9
The paper presents the results of an accuracy analysis of a number of gridded Digital Surface Models (DSMs) which have been
created from first return laser scanning (LiDAR) data. DSMs are created usi...
Integration of High Resolution Digital Elevation Models in 3d-gis-applications of The Environmental Information System of Baden-Württemberg
High resolution DEM/DTM Threedimensional
2015/7/7
This paper describes the integration of high resolution digital elevation models, currently acquired by the administration of BadenWürttemberg,
a state in Germany, in two example 3D GIS applications ...
QUALITY ASSESSMENT FOR THE FIRST PART OF THE TANDEM-X GLOBAL DIGITAL ELEVATION MODEL
Synthetic Aperture Radar (SAR) SAR Interferometry
2015/5/7
TanDEM-X is an innovative synthetic aperture radar (SAR) mission with the main goal to generate a global and homogeneous digital elevation model (DEM) of the Earth’s land masses. The final DEM produ...
THE USE OF LASER SCANNER DATA FOR THE EXTRACTION OF BUILDING ROOF DETAIL USING STANDARD ELEVATION DERIVED PARAMETERS
Laser Scanning LIDAR Roof Detail 3D City Models
2014/12/22
3D city modelling is a rapidly growing research area in the field of feature extraction. As the demand for 3D data increases, so does the necessity for higher detail building models. The use of aerial...
Modelling Uncertainty of Stream Networks Derived from Elevation Data Using Two Free Softwares: R and SAGA
DEM Stream Network Uncertainty Modeling R SAGA
2013/3/5
Stream networks are considered important units in many environmental decision making processes. The extraction of streams using digital elevation models (DEMs) presents many advantages. However it is ...
GPS- vs. DEM-Derived Elevation Estimates from a Hardwood Dominated Forest Watershed
Forest Canopy Cover Linear Regression Spatial Estimates
2013/3/5
Topographic attributes are often used as explanatory variables when providing spatial estimates of various environmental attribute response variables. Elevation of sampling locations can be derived fr...
Orthorectification and Digital Elevation Model (DEM) Generation Using Cartosat-1 Satellite Stereo Pair in Himalayan Terrain
DEM Cartosat Stereo Pair Orthorectification Himalaya
2013/3/5
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 resour...