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ISSDQ is an important event in the field of spatial data quality, it has been successfully held nine research conferences every two years since 1999. ISSDQ 2017 will take place in Wuhan, Hubei, China,...
The 10th International Symposium on Spatial Data Quality
The 10th International Symposium Spatial Data Quality
2017/3/10
ISSDQ is an important event in the field of spatial data quality, it has been successfully held nine research conferences every two years since 1999. ISSDQ 2017 will take place in Wuhan, Hubei, China,...
UTILIZATION OF LANDSAT DATA FOR WATER QUALITY OBSERVATION IN SMALL INLAND WATER BODIES
Landsat cloud cover temporal resolution data gap water quality
2016/11/30
Many studies deal with water quality evaluation using remotely sensed data. In the field of remote sensing, there have been proposed several procedures how to observe selected parameters of water qual...
NO-REFERENCE IMAGE QUALITY ASSESSMENT FOR ZY3 IMAGERY IN URBAN AREAS USING STATISTICAL MODEL
Image quality assessment Statistical model Generalized Gaussian distribution (GGD) High-resolution remote sensing images Urban area ZY3
2016/7/28
More and more high-spatial resolution satellite images are produced with the improvement of satellite technology. However, the quality of images is not always satisfactory for application. Due to the ...
ASSESSMENT OF THE GEOMETRIC QUALITY OF SENTINEL-2 DATA
Sentinel-2 Orthophoto Data Quality Edge Extraction Distance Calculation
2016/7/4
High resolution (10 m and 20 m) optical imagery satellite Sentinel-2 brings a new perspective to Earth observation. Its frequent revisit time enables monitoring the Earth surface with high reliability...
High quality DTMs from contourlines by knowledge-based classification of problem regions
High quality DTMs contourlines knowledge-based classification problem regions
2016/5/20
Contourline maps are increasingly used to generate DTMs (Digital Terrain Models). That's, because in most countries such maps are existing, covering the whole area in different scales, thus representi...
CONTRIBUTION TO THE ASSESSMENT OF SEGMENTATION QUALITY FOR REMOTE SENSING APPLICATIONS
Image processing classification image understanding feature extraction land cover segmentation accuracy assessment
2015/12/31
Within object-oriented or segment-based classification approaches the segmentation step is decisive, because the results form the basis for the following classification. Despite known investigations a...
NEW QUALITY REPRESENTATION FOR HYPERSPECTRAL IMAGES
Hyperspectral quality criteria evaluation compression
2015/12/31
Assessing the quality of a hyperspectral image is a difficult task. However, this assessment is required at different levels of the instrument design: evaluation of the signal to noise ratio necessary...
MODELING WATER QUALITY USING TERRA/MODIS 500M SATELLITE IMAGES
ChlorophyII a Coast MODIS Suspended Solids Turbidity Water quality
2015/12/28
A study was conducted in Hong Kong with the aim of deriving algorithms for the retrieval of turbidity, chlorophyII a and suspended solids concentrations from Terra/MODIS 500m level 1B reflectance data...
THE PRODUCTION OF HIGH-QUALITY VIDEO FOR E-LEARNING
Video Production GNSS Education Spatial Information Sciences
2015/12/22
As video capture, editing and transmission capabilities become more accessible, video is increasingly being considered when developing e-learning content. However, the skills required for video produc...
The Influence on Image Quality under Relative Calibration Accuracy
accuracy analysis calibration imagery method pushbroom remote sensing
2015/11/24
Strips can be seen in raw remote sensing images of CCD camera. The object of relative radiometric calibration is to eliminate them. This paper discusses the influence on image quality under different ...
QUALITY ANALYSIS OF 3D ROAD RECONSTRUCTION
Quality analysis 3D road reconstruction topographic features data fusion laser scanner data
2015/11/10
Quality of 3D reconstructed roads strongly depends on input data and following processing steps. Quality analysis is essential for building up a reliable reconstruction process and for a proper use of...
Semi-automatic Verification of Geodata for quality Management and updating of GIS
Automation Change Detection GIS Quality Updating
2015/10/9
The usefulness and acceptance of geoinformation systems mainly depend on the quality of the underlying geodata. The aim of this
paper is to introduce a system for the verification of geodata. The ve...
DATA QUALITY IN 3D: GAUGING QUALITY MEASURES FROM USERS’ REQUIREMENTS
user needs data quality quality measures 3D data mapping
2015/9/28
Producing data of known quality is an essential operation of mapping agencies such as Ordnance Survey. For these data to be of value to our customers, we need to understand what quality measures will ...
SPATIAL ANALYSIS AND QUALITY MANAGEMENT OF RAINFALL DATA AT THE ZAMBIA METEOROLOGICAL DEPARTMENT
Rainfall Analysis Quality management Meteorological Zambia
2015/9/28
Rainfall data is one of the meteorological parameters that have a greater bearing on the livelihood of individuals not only in Zambia but also the world over. It is therefore very important that quali...