搜索结果: 1-15 共查到“测绘科学技术 Update”相关记录31条 . 查询时间(0.093 秒)
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...
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...
Road Extraction for the Update of Road Database in Suburban Areas
Image understanding Road extraction Computer Vision Feature extraction Updating
2015/12/9
This paper deals with road extraction in suburban areas from high resolution aerial images. The extraction results are intended to be used for updating a road database. The road extraction algorithm f...
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
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...
Spatial Database Update and Validation – Current Advances in Theory and Technology
Data Models Data Quality Knowledge Management Rules-based Processing Service Oriented Architecture System Architecture Update Workflow
2015/10/9
The paper summarises the importance of spatial data quality, especially as data is used more and more in automated processes and decision-making, and as data is integrated or ‘joined-up’ from diverse ...
DECOVER–GEOINFORMATION SERVICES TO UPDATE AND SUPPLEMENT LAND COVER DATA FOR GERMAN DECISION MAKERS
Remote Sensing Land Cover Classification Change Detection Interoperability
2015/9/17
There is a growing need for consistent and up to date land cover data at various scales by regional, national and European authorities. Main drivers are recent or upcoming European directives and init...
INTERCALIBRATION OF VEGETATION INDICES - AN UPDATE
Vegetation index sensor systems spectroradiometric measurements
2015/9/8
In 2003 we addressed the issue of intercalibration of vegetation indices from different satellite-based optical sensor systems with
differing spectral response functions in the visible and near-infra...
New methods and satellites: A program update on the NASS cropland data layer and acreage program
AWiFS Landsat See5
2015/9/6
The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) annually produces crop
specific classifications and acreage estimates over the major growing region...