搜索结果: 16-30 共查到“工学 databases”相关记录78条 . 查询时间(0.034 秒)
Change-only Modeling in Navigation Geo-databases
Change-Only Updating Navigation Road Network GDF
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2015/10/12
Navigation geo-database is the foundation and vital component of vehicle navigation system. Now almost geo-database is stored in
hardware, such as CD, DVD. But, with the development of urban constru...
Physical Barrier Detection for Updating of Navigation Databases from High Resolution Satellite Imagery
Update Navigation GIS High Resolution Database Edge Detection
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2015/10/12
Updating of navigation databases is an important task to ensure a high level utilization of navigation data. For example, in
fundamental topographic databases roads are often represented as a single...
Data Harmonisation and Optimisation for Development of Multi-scale Vector Databases
Multi-source multi-resolution vector database data Kits imagery requirements and constraints
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2015/10/12
The increasing number of Earth observation sensors on the market is making the choice of optimized data sources to serve
operational needs more complex than ever before. Applying a geographic perspe...
QUALITY CONTROL IN LARGE SPATIAL DATABASES MAINTAINANCE
Quality Spatial Data Data acceptance Criteria Automated Quality Control
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2015/9/28
The heart of any spatial systems is its strong reliable database. The spatial database is a complex in nature which requires special technical skills to maintain it. The discrepancies in database can ...
TOWARDS REAL-TIME METADATA FOR SENSOR-BASED NETWORKS AND GEOGRAPHIC DATABASES
Metadata Sensor database SpatioTemporal Data Quality GIS
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2015/9/28
Nowadays, the geographic metadata are defined by ISO standards and their particular goal is to assist the data exchange between different users and to provide the data quality information. However, th...
AN ALGORITHM FOR VERICATION AND CHANGE DETECTION BETWEEN 3D GEOSPATIAL DATABASES AND AERIAL IMAGES
building detection change detection TOP10DK unsupervised segmentation covariance matrices
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2015/9/17
An algorithm for building detection in aerial images is presented. The algorithm is based on a combination of unsupervised segmentation and selection of a training set based on existing building regis...
Application of the relocation-error distribution on geomagnetic databases. Analyses on the «Historical Italian Geomagnetic Data Catalogue
geomagnetism magnetic dating relocation
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2015/9/1
The reliability of the Historical Italian Geomagnetic Data Catalogue, comprising 536 directions and 393 intensities, has been assessed by comparing the historical geomagnetic measurements with the GUF...
INTEGRATING EARTH OBSERVATIONS DATA INTO GEOSPATIAL DATABASES THAT SUPPORT PUBLIC HEALTH DECISIONS
Earth observation System integration Internet GIS
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2015/8/31
There are several reasons why public health communities do not use information from Earth observations routinely. Most notable
among them are: (1) they need science results that verify, validate, and...
INTEGRATIVE GEOSPATIAL DATABASES
Integration GIS Databases
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2015/8/28
Modern geographical information systems make it possible to integrate information from multiple sources in different forms for
querying and analysing information. So the importance of geospatial data...
In this paper an approach to the automatic quality assessment of existing geo-spatial data is presented. The necessary reference
information is derived automatically from up-to-date digital remotely ...
Methods and Implementation of the Geospatial Databases Integration and Update towards E-government
Geospatial Data Integration Data Update E-Government
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2015/8/17
All the implementations of the geo-spatial information systems depend on the multi-levels, synthetic and integrated databases of
spatial and attribute information. These databases have many unique ch...
DATABASES INTEGRATION FOR SUPPORTING THE FUTURE PRODUCTION OF IGN BELGIUM GENERALISED MAPS
automatic generalisation updates propagation database integration data conflicts feature matching
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2015/8/17
In the near future, IGN Belgium will have to produce updated paper maps from a centralised large-scale geographic database. Two options were investigated in a production environment: automatic general...
Visualization of Image Quality in Distributed Spatial Databases
Quality Visualization Imagery
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2015/7/9
Users of GIS are offered an abundance of aerial and satellite imagery in distributed spatial databases. Available datasets can
cover the same area, differing only in quality attributes, such as resol...
Global Environmental Databases from Ceos Agencies
Global Environmental-Databases Satellite Remote Sensing
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2015/7/8
The Committee on Earth Observation Satellites (CEOS) is an international organization charged with coordinating international civil
spaceborne missions designed to observe and study planet Earth. Com...
Control Extension and Orthorectification Procedures for Compiling Vegetation Databases of National Parks in The Southeastern United States
vegetation mapping softcopy photogrammetry GIS
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2015/7/7
Vegetation mapping of national park units in the southeastern United States is being undertaken by the Center for Remote Sensing and
Mapping Science at the University of Georgia. Because of the uniqu...