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One year ago today, researchers at Lawrence Livermore National Laboratory achieved a record shot at the National Ignition Facility (NIF) that set the world talking about the potential of fusion energy...
NSF joins federal partners in announcing update to national AI research and development strategic plan（图）
NSF national AI research development strategic plan
2019/10/28
The National Science Foundation (NSF) joins other federal agency partners in announcing the release of the 2019 Update to the National Artificial Intelligence (AI) Research and Development (R&D) Strat...
西安电子科技大学数据库系统课件3.4 数据更新INSERT与UPDATE。
AUTOMATED BUILDING DETECTION IN DENSE POINT CLOUD AND UPDATE OF OPEN SOURCE DATA BASES
Dense matching, Building detection Classification Digital Terrain Model openstreetmap point cloud
2018/11/9
In this paper a method of detecting buildings in dense populated city areas using a three-dimensional model, produced by aerial images, is described. Further to the detection of the outline of the bui...
COMPARATIVE GEOMETRICAL ACCURACY INVESTIGATIONS OF HAND-HELD 3D SCANNING SYSTEMS – AN UPDATE
3D mesh point cloud reference structured light systems VDI/VDE
2018/6/4
Hand-held 3D scanning systems are increasingly available on the market from several system manufacturers. These systems are deployed for 3D recording of objects with different size in diverse applicat...
OPEN PIT MINE 3D MAPPING BY TLS AND DIGITAL PHOTOGRAMMETRY: 3D MODEL UPDATE THANKS TO A SLAM BASED APPROACH
TLS digital photogrammetry open pit mine SLAM mapping automatic localization
2018/6/5
The state of the art of 3D surveying technologies, if correctly applied, allows to obtain 3D coloured models of large open pit mines using different technologies as terrestrial laser scanner (TLS), wi...
USING THIRD PARTY DATA TO UPDATE A REFERENCE DATASET IN A QUALITY EVALUATION SERVICE
data update quality assessment geospatial database conflation web service
2016/11/8
Nowadays it is easy to find many data sources for various regions around the globe. In this 'data overload' scenario there are few, if any, information available about the quality of these data source...
METHODS FOR THE UPDATE AND VERIFICATION OF FOREST SURFACE MODEL
Vegetation Forest growth measurement LIDAR Digital Terrain Model (DTM) Digital Surface Model (DSM) Canopy height model (CHM) Forest database updating
2016/11/8
The digital terrain model (DTM) represents the bare ground earth's surface without any objects like vegetation and buildings. In contrast to a DTM, Digital surface model (DSM) represents the earth's s...
More and more often people exchange geospatial information. This happens when a user gets data from producer. For a transfer of updated data a producer provides a new geographical dataset to users. No...
E-COLLABORATION BETWEEN THE PRIVATE AND THE CIVIL SECTOR: SUPPORT OF LONG-TERM UTILIZATION AND UPDATE OF OFFICIAL 3D CITY MODELS
3D City Model Digital City CityGML
2016/2/29
Research on the creation and use of 3D city models has made rapid progress recently. An increasing number of cities and regions
now own 3D city models or are planning to use them in the future. Espec...
Object-Based Verification and Update of a Large-scale Topographic Database
Change detection updating databases aerial reference data
2016/1/25
It is well known that there is a growing need for consistent and up-to-date GIS-data at various scales. This paper describes a system
for semiautomatic quality assessment and update of an existing l...
CHANGE DETECTION FOR AERIAL PHOTO DATABASE UPDATE
Remote Sensing Change Detection Classification Land Cover Multisensor
2015/12/31
With rapid new technological development during the past 50 years, aerial photos have been increasingly and commonly used not only in geographic information systems but also in various spatially relat...
Concepts of an Object-Based Change Detection Process Chain for GIS Update
Change Detection Indicators GIS Updating Satellite Mapping
2015/12/16
Today, with the situation of rapidly emerging high resolution earth observation data by optical and microwave sensors there is a growing need for efficient methods to derive, maintain and revise land ...
Automatic Object Extraction for Change Detection and GIS Update
Object Extraction Image Understanding Evaluation Disaster Management
2015/12/16
In this paper we will revise the recent developments in the field of automatic object extraction for change detection and GIS update under different aspects: (1) level of automation; (2) available sen...
The Integrated Workflow and Software System for GIS Database Update Based on Geospatial Imageries
GIS Database Update Geospatial Images Integration Multi-Source Information Conformity
2015/12/11
Although the image-based update strategy is becoming one of the most desirable choices in keeping the up-to-date state of GIS database, now in China, the traditionally adopted workflow and arts for up...