搜索结果: 1-15 共查到“大地测量学 quality”相关记录27条 . 查询时间(0.171 秒)
GEOMETRIC QUALITY ASSESSMENT OF LIDAR DATA BASED ON SWATH OVERLAP
Lidar Quality Geometry Relative Accuracy
2016/7/4
This paper provides guidelines on quantifying the relative horizontal and vertical errors observed between conjugate features in the overlapping regions of lidar data. The quantification of these erro...
Contributions to a quality description of areal objects in spatial data sets
spatial data quality comparison of spatial entities building extraction
2016/5/20
In this paper we present a quality evaluation of two-dimensional building acquisition. We propose methods for identification and quantifi-cation of differences between independently acquired regions, ...
Integrated use of spatial data and learning algorithms to detect water quality trends
Integrated spatial data learning algorithms detect water quality trends
2016/5/20
This paper presents the first results of a study which investigates river basin water quality management based on the ability of GIS to integrate different data sources into a common geographical data...
The quality control in the Finnish land parcel identification system orthophoto production
quality control Finnish land parcel identification system orthophoto production
2016/5/20
The quality control in the Finnish land parcel identification system orthophoto production.
PERFORMANCE OF TDVI IN URBAN LAND USE/COVER CLASSIFICATION FOR QUALITY OF PLACE MEASUREMENT
PERFORMANCE URBAN LAND USE COVER CLASSIFICATION QUALITY OF PLACE MEASUREMENT
2015/12/31
Measuring the Quality of Place (QOP) is a hard task since it involves both physical and socio-economic dimensions. Being one of the major land use categories, urban vegetation plays a significant role...
USING SDI AND WFS FOR QUALITY ASSURANCE ON FIELD DATA COLLECTION
SDI Web Feature Services Data Quality Field Data Collection
2015/12/23
Nowadays, various organizations collect new spatial data or update existing ones. If a specific information community collects spatial data with regards to its own requirements, purposes and applicati...
Procedures and Software for High Quality TIN Based Terrain Surface Reconstruction
Acquisition Modelling Reconstruction Algorithms Automation DEM/DTM Software
2015/12/16
Algorithms and software for correct reconstruction of the terrain surface by using data acquired by digitization of existing maps have been developed. The software enables efficient high quality forma...
A Study of GIS-SD Based Temporal-Spatial Modeling Spatial and Temporal Patterns of Global H5N1 Outbreaks of Water Quality in Water Pollution Accidents
Temporal Spatial Simulation Pollution Decision Support Hydrology
2015/12/1
In this paper, the one-dimension river quality system dynamics model was applied to the water quality simulation, and the conceptual GIS-SD frame was constructed. Based on the component GIS and system...
THE IMPACT OF SPATIAL DATA QUALITY ON COMPANY’S DECISION MAKING
Spatial data spatial information business information analysis decision-making benefit
2015/9/28
The impact of spatial data quality on decision-making depends on the role of the geographic information system (GIS) in the company. The requirements for data quality are different depending on whethe...
QUALITY CONTROL IN LARGE SPATIAL DATABASES MAINTAINANCE
Quality Spatial Data Data acceptance Criteria Automated Quality Control
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 ...
WHAT COMMUNICATES QUALITY TO THE SPATIAL DATA CONSUMER?
spatial data quality consumers communication
2015/9/28
For almost 20 years now, spatial data providers have been creating and publishing metadata records for their products. One intention of the metadata, which includes detailed data quality information, ...
FORMAL LANGUAGES FOR EXPRESSING DATA CONSISTENCY RULES AND IMPLICATIONS FOR REPORTING OF QUALITY METADATA
Re-use rules metrics mining languages metadata
2015/9/28
Over the past thirty years, in excess of 36 billion dollars has been invested in the collection of spatial information across the public sector in Europe (PIRA, 2000). There is a clear imperative now ...
THE NATURE OF PRISMS: EXPLORING DATA QUALITY AND VAGUENESS IN DYNAMIC SPATIO-TEMPORAL CONSTRUCTS
Space-time data models lifelines vagueness uncertainty space-time prism rod-field model
2015/9/28
Hagerstrand's minimalist representation of individual lives and opportunities as lifelines and prisms predates the technologies available to current GIScience but resonates with many emerging spatio-t...
Quality Assessment in Spatial Clustering of Data Mining
Spatial Data Mining Quality Assessment Clustering Compactness Separation
2015/9/28
Because of the use of computers and its advances in scientific data handling and advancement of various geo and space borne sensors, we are now faced with a large amount of data. Therefore, the develo...
STORING AND QUERYING SPATIALLY VARYING DATA QUALITY INFORMATION USING AN INTEGRATED SPATIAL RDBMS
quality spatial variation metadata sub-feature variation spatial database
2015/9/28
Current representations of spatial data quality (SDQ) do not adequately represent the spatial variation of SDQ. For example, a user who wants to know the positional accuracy of a feature usually has t...
