搜索结果: 76-90 共查到“工学 DEM”相关记录250条 . 查询时间(0.086 秒)
Orientation and DEM Extraction from ALOS-PRISM Images Using the SRTM-DEM as Ground Control
Three-Line Matching DEM/DTM Georeferencing Orthorectification Accuracy
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2015/11/24
This paper presents a methodology of image orientation and DEM extraction from ALOS-PRISM stereopairs without the use of GCPs. It uses the approximate geo-location information derived from the sensor ...
Research on a Correction Method to Existing Grid-based DEM
DEM Feature Data Structure Surface Method
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2015/11/24
The existing grid-based DEM has several disadvantages in representing the features of real terrain surface, such as peak clipping, channel filling, etc. And abrupt changes in elevation cannot be handl...
An Evaluation on the Data Quality of Srtm DEM at the Alpine and Plateau area, North-Western of China
DEM Shuttle Radar Topographic Mission (SRTM) evaluation Inferometric SAR (InSAR) land cover
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2015/11/23
This paper evaluates the quality of SRTM3 data for alpine and plateau areas in Northwestern (NW) China against DEM data extracted from topographic maps. These SRTM data were obtained from both the ESR...
Utilization Potential of High Resolution Stereo Data for Extracting DEM and Terrain Parameters
CARTOSAT-1 Stereo data RPCs DGPS DEM Ortho Image
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2015/11/23
Cartosat-1 data provides along track stereo data continuously with its fore and aft cameras. 10 bit quantization and near real time imaging between the stereo pairs which improve the image matching ac...
DEM Generation from High Resolution Multi-View Data product
digital elevation model stereo image accuracy image matching Cartosat-2
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2015/11/23
High resolution space-borne remote sensing image data show a high level of detail and provide many opportunities to be integrated into remote sensing applications. In particular, surface mapping from ...
Automated Update of Existing Ortho-Image Database and DEM Using High resolution Satellite Images
DTED Level 3 Automatic update DEM, Stereo matching Automatic GCP extraction Ortho-image RANSAC
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2015/11/23
The DEM (Digital Elevation Model) and ortho-image have been used in various fields such as 3D (dimension) map, 3D urban model, simulation, and so on. Today, users require more detail data but many exi...
A DEM Construction Method for Inconstant Inter-Tidal Zone Base on Short-Interval, High Frequency MODIS Data Set: A Case Study in the Dongsha Sandbank of the Jiangsu Radial Tidal Sand-Ridges
Remote sensing Tidal-flat Elevation Inversion Short-interval & High-frequency MODIS Data Set
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2015/11/23
Surface elevation is a critical data for geo-science study. As far as some regions with rapidly-changing in landform, analyzing the surface elevation of different periods help provide scientific basis...
Correcting DEM Extracted from Aster Stereo Images by Combining Cartographic DEM
ASTER Stereo Images DEM Accuracy Spaceborne Photogrammetry
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2015/11/23
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on-board the NASA's Terra spacecraft provides along-track digital stereo image data at 15m resolution with a base-height rati...
Investigation of 3D Geopositioning and DEM Accuracy of CARTOSAT-1 Stereo Imagery
Satellite remote sensing high-resolution image digital photogrammetry imaging platforms DEM/DTM
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2015/11/23
Because Cartosat-1 data is one of the ideal sources for topographic map updating, it is important to provide enough geometric accuracy with minimum number of Ground Control Points (GCP). For a 1:25.00...
Reconstruction of 30m DEM from 90m Srtm DEM with Bicubic Polynomial Interpolation Method
Reconstruction DEM SAR Radar Resolution Accuracy
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2015/11/23
This work presents a methodology for the refinement of 90m digital elevation model (DEM) of Shuttle Radar Topographic Mission (SRTM) data. The SRTM DEM is publicly available through the Seamless Data ...
DEM (Digital Elevation Model) Production and Accuracy Modeling of DEMs from 1:35.000 Scale Aerial Photographs
Photogrammetry Mapping Automation DEM/DTM Accuracy
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2015/11/23
Aerial photographs and satellite imagery have been evaluated manually by the operators for a long time for the extraction of the contour line and DEM data. Computer technology and digital image proces...
An Indirect Generalization of Contour Lines Based on DEM Generalization Using the 3D Douglas-Peucker Algorithm
Cartography GIS, Algorithm DEM/DTM Geomorphology Global Generalization
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2015/11/23
In order to simplify the generalization of contour lines during the compilation of maps at smaller scales, an indirect method is put forward based on the generalization of the corresponding DEM first ...
DEM Registration, Alignment and Evaluation for SAR Interferometry
DEM Accuracy assessment SAR Interferometry Digital elevation models Registration
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2015/11/20
To generate an accurate digital elevation model (DEM), Interferometric Synthetic Aperture Radar (InSAR) requires precise orbit data and baseline information, which are not always available. An alterna...
REIN ALGORITHM AND THE INFLUENCE OF POINT CLOUD DENSITY ON NDSM AND DEM PRECISION IN A SUBMEDITERRANEAN FOREST
lidar forest DEM nDSM point cloud density REIN algorithm
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2015/11/10
The REIN algorithm makes use of the redundancy in lidar point cloud to generate bare ground DEM and vegetation canopy nDSM.The influence of the input lidar point density on the DEM precision and conse...
ASSESSMENT OF HEIGHT ACCURACY OF DEM FOR SPECIES HABITAT ANALYSIS AND MODELLING
DEM accuracy spatial correlation of error slope Swiss National Park GIS
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2015/9/28
In mountainous areas, the use of DEM as environmental parameter in local and global models is widely accepted. Derived information like slope, aspect and others are often used as substitutes for missi...