搜索结果: 61-75 共查到“测绘科学技术 Updating”相关记录75条 . 查询时间(0.091 秒)
SPATIAL DATABASE UPDATING USING ACTIVE CONTOURS FOR MULTISPECTRAL IMAGES: APPLICATION WITH LANDSAT7
Active contours snakes multi-spectral imagery spatial data integration
2015/3/6
This paper presents a fully automated system for area detection based on satellite images and topographic features from a database. The surfaces issued from the database are refined using active conto...
AUTOMATED CORRECTION AND UPDATING OF ROADS FROM AERIAL ORTHO-IMAGES
Road Database Correction Aerial Image Analysis Snakes Line Junctions Road Following
2015/2/2
Our work addresses the correction and update of road map data from georeferenced aerial images. To positionally correct the existing road network location from the imagery, we use an active contour (”...
ANALYSIS OF IMAGE OBJECTS FROM VHR IMAGERY FOR FOREST GIS UPDATING IN THE BAVARIAN ALPS
Remote Sensing Object-oriented segmentation semantic network alpine forestry
2014/12/31
Pixel based analysis deals with the three basic features of a single pixel; Position Size and Value. The important spatial context of the pixel is used in filter operations, where the output value is ...
UPDATING LIDAR DSM USING HIGH RESOLUTION STEREO-BASED DSM FROM WORLDVIEW-2
Updating DSM LiDAR high resolution satellite images 3D change detection automatic building extraction
2014/12/1
In recent years, the acquisition and processing techniques of high resolution Digital Surface Models (DSM) have been rapidly improved. Airborne LiDAR production as a well-known and high quality DSM is...
Automatic Building Map Updating Using Worldview-2 Stereo Images and Existing Outdated Building Map
Building Map Updating Building Change Detection Building Extraction Active Contour Models
2014/12/1
Updating of existing geo-database, particularly in developing countries, is one of the important and essential issues in geospatial information systems. Numerous change detection methods have been pro...
Fast Updating National Geo-Spatial Databases with High Resolution Imagery: China's Methodology and Experience
Geospatial database Image interpretation Large area data updating
2014/7/23
Geospatial databases are irreplaceable national treasure of immense importance. Their up-to-dateness referring to its consistency with respect to the real world plays a critical role in its value and ...
AN INVESTIGATION OF AUTOMATIC CHANGE DETECTION FOR TOPOGRAPHIC MAP UPDATING
Mapping Change Detection Classification Pixel Object
2014/4/29
Changes to the landscape are constantly occurring and it is essential for geospatial and mapping organisations that these changes are regularly detected and captured, so that map databases can be upda...
AN UPDATING PRODUCTION LINE SYSTEM FOR NATIONAL TOPOGRAPHICAL DATABASE AT 1:50K OF CHINA BASED ON DIGITAL MAP GENERALIZATION
Geospatial data updating Digital map generalization Rule Multi scale Production system
2014/4/28
This paper is focused on applying digital map generalization into the updating of geo-spatial database from large scale in the
collaborative updating environment for SDI, an updating production line...
A BOTTOM-UP GEOSPTIAL DATA UPDATE MECHANISM FOR SPATIAL DATA INFRASTRUCTURE UPDATING
: Geography Vector Integration Matching
2014/4/28
Currently, the top-down spatial data update mechanism has made a big progress and it is wildly applied in many SDI (spatial data
infrastructure). However, this mechanism still has some issues. For e...
DATA UPDATING METHODS FOR SPATIAL DATA INFRASTRUCTURE THAT MAINTAIN INFRASTRUCTURE QUALITY AND ENABLE ITS SUSTAINABLE OPERATION
Spatial Information Sciences Spatial Infrastructures Framework Data Sustainable GIS Reliability
2014/4/28
The Japanese government, local governments and businesses are working closely together to establish spatial data infrastructures in
accordance with the Basic Act on the Advancement of Utilizing Geos...
UPDATING OBJECT FOR GIS DATABASE INFORMATION USING HIGH RESOLUTION SATELLITE IMAGES: A CASE STUDY ZONGULDAK
GIS, Remote Sensing High resolution imagery
2014/6/5
Nowadays Geographic Information Systems (GIS) uses Remote Sensing (RS) data for a lot of applications. One of the
application areas is the updating of the GIS database using high resolution imagery....
SECOND GENERATION MOSAIC:A NOVEL MECHANISM BASED ON REFERENCE DATABASE FOR MAP UPDATING
Map Updating Mosaic Parallel Processing Orthoimage Mosaic
2014/5/8
A totally new automatic workflow mechanism, named Second generation Mosaic module, based on the well-known Pixel Factory
system, will be introduced here, which enables existing digital orthoimages a...
UPDATING GEOSPATIAL DATA FROM LARGE SCALE DATA SOURCES
Geospatial Data Updating Digital Map Generalization Rrule Multi Scale Production System
2014/5/8
In the past decades, many geospatial databases have been established at national, regional and municipal levels over the world.
Nowadays, it has been widely recognized that how to update these estab...
A TOOL FOR OBJECT DESCRIPTIVE FEATURE EXTRACTION: APPLICATION TO IMAGE CLASSIFICATION AND MAP UPDATING
Feature extraction object-oriented classification high-resolution imagery land cover mapping
2014/6/12
A software tool specifically designed for the extraction of multi-criteria features from image objects is described, as well as an application example. The input data are typic...
Updating Large Scale Topographic Databases in Italian Urban Areas with Submeter QuickBird Images
Large Scale Topographic Databases Italian Urban Areas Submeter QuickBird Images
2009/9/3
This paper presents some tests for the updating of the Italian Raster Regional Technical Map (RRTM) at 1: 10000 scale and of the Italian Vector Technical Map (VTM) at 1: 5000 scale using a submeter Qu...