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UPDATING NATIONAL TOPOGRAPHIC DATA BASE USING CHANGE DETECTION METHODS
NTDB (National topographic data base) Segmentation Classification DSM DTM
2016/11/23
The traditional method for updating a topographic database on a national scale is a complex process that requires human resources, time and the development of specialized procedures. In many National ...
INTEGRATED PROCESSING OF HIGH RESOLUTION TOPOGRAPHIC DATA FOR SOIL EROSION ASSESSMENT CONSIDERING DATA ACQUISITION SCHEMES AND SURFACE PROPERTIES
UAV photogrammetry TLS data fusion scan geometry surface roughness soil erosion
2016/11/11
Soil erosion is a decisive earth surface process strongly influencing the fertility of arable land. Several options exist to detect soil erosion at the scale of large field plots (here 600 m2), which ...
THE TOPOGRAPHIC DATA DELUGE – COLLECTING AND MAINTAINING DATA IN A 21ST CENTURY MAPPING AGENCY
Mobile mapping UAVs Oblique Imagery Terrestrial Laser Scanning
2016/11/8
In the last few years, the number of sensors and data collection systems available to a mapping agency has grown considerably. In the field, in addition to total stations measuring position, angles an...
MAPPING OF INNER AND OUTER CELESTIAL BODIES USING NEW GLOBAL AND LOCAL TOPOGRAPHIC DATA DERIVED FROM PHOTOGRAMMETRIC IMAGE PROCESSING
Planetary cartography DEM geomorphology study Phobos the Moon Mercury Ganymede and Enceladus
2016/11/8
New estimation of fundamental geodetic parameters and global and local topography of planets and satellites provide basic coordinate systems for mapping as well as opportunities for studies of process...
A PRELIMINARY STUDY ON SPATIAL SAMPLING FOR TOPOGRAPHIC DATA
Gaussian Filter Spatial Sampling Error Surface Topographic Data
2015/9/28
In this paper, an effective spatial sampling method is preliminary explored to assess the quality of the topographic data. The most novel idea in this study is we think the error as noise in the signa...
ASSESSMENT OF THE VHRS IMAGES FOR ELABORATION OF THE TOPOGRAPHIC DATA BASE 1: 10 000 IN POLAND
Satellite Photogrammetry IKONOS QuickBird EROS Orthorectification Digital
2015/8/17
In Poland, one commenced the works on creation of Topographic Data Base (TDB) of accuracy and contents equivalent to traditional
topographic map scaled: 1:10 000. Such base is created on the grounds...
PRELIMINARY STUDIES ON CONTOUR TREE-BASED TOPOGRAPHIC DATA MINING
Spatial data mining Spatial relations of contour lines Contour tree
2015/8/10
After many years of intensive investigation and mapping of the topography, a large number of topographic maps were produced by national mapping agencies. The explosive growth and wide availability of ...
LANDSLIDE FEATURES INTERPRETED BY NEURAL NETWORK METHOD USING A HIGH-RESOLUTION SATELLITE IMAGE AND DIGITAL TOPOGRAPHIC DATA
Landslides Earthquakes Hazards Quickbird LIDAR Neural
2015/7/29
Landslides are natural phenomena for the dynamic balance of earth surface. Due to the frequent occurrences of Typhoons and
earthquake activities in Taiwan, mass movements are common threatens to our...
USING LANDSAT 7 IMAGES TO UPDATE CANADIAN NATIONAL TOPOGRAPHIC DATA
LANDSAT 7 IMAGES CANADIAN NATIONAL TOPOGRAPHIC DATA
2015/3/16
USING LANDSAT 7 IMAGES TO UPDATE CANADIAN NATIONAL TOPOGRAPHIC DATA.
ON-LINE DISTRIBUTION OF DIGITAL TOPOGRAPHIC DATA
ON-LINE DISTRIBUTION DIGITAL TOPOGRAPHIC DATA
2015/3/16
ON-LINE DISTRIBUTION OF DIGITAL TOPOGRAPHIC DATA.
A DIGITAL NATIONAL FRAMEWORK FOR TOPOGRAPHIC DATA IN GREAT BRITAIN
National Mapping Agencies data acquisition data dissemination mapping
2014/12/30
In this paper we will present the Digital National Framework for Topographic Data in Great Britain, as outlined in the Ordnance Survey business model. The paper will show how Ordnance Survey intends t...
A geospatial reference framework for a university campus: a case study for managing student surveyed topographic data
Geospatial reference framework Topographic survey University campus
2014/11/28
This presentation describes a geospatial reference framework for managing student surveyed topographic data of a university campus. This topographic data is collected annually by Geodesy and Geomatics...
QUANTITATIVE ASSESSMENT OF DIGITAL TOPOGRAPHIC DATA FROM DIFFERENT SOURCES
Accuracy, Quality DEM Quality, Photogrammetry Remote Sensing SAR SPOT
2014/6/5
This study includes the quantitative assessment of digital topographic data of the terrain from photogrammetric methods, satellite
imaging and RADAR techniques in test side in Istanbul. The side are...
INTERPRETATION OF TOPOGRAPHIC DATA FROM 'SHAPE FROM SHADING' METHOD, APPLICATION IN VILLAGARCíA DE CAMPOS CASTLE
Cultural Heritage Interpretation Method Digital Modelling Three-dimensional.
2014/4/25
Generating digital products allowing the assessment and interpretation of Cultural Heritage is a key task in conservation processes.
Thus a variety of (Shape from X) methods have been developed thro...