搜索结果: 1-15 共查到“测绘科学技术 Roads”相关记录25条 . 查询时间(0.054 秒)
OBJECTS GROUPING FOR SEGMENTATION OF ROADS NETWORK IN HIGH RESOLUTION IMAGES OF URBAN AREAS
Road extraction Segmentation Objects grouping Object based image analysis Maximal similarity region merging
2016/11/24
Updated road databases are required for many purposes such as urban planning, disaster management, car navigation, route planning, traffic management and emergency handling. In the last decade, the im...
Automatic 3D Extraction of Buildings, Vegetation and Roads from LIDAR Data
Lidar automatic extraction 3D modelling of building
2016/7/27
Aerial topographic surveys using Light Detection and Ranging (LiDAR) technology collect dense and accurate information from the surface or terrain; it is becoming one of the important tools in the geo...
STRAIGHT ROADS EXTRACTION BY FUSION OF SPOKE WHEEL AND REGION GROWING
Semi-automatic road extraction spoke wheel region growing
2016/3/17
Semi-automatic methods are regarded as more practical than automatic methods to obtain and/or update the vector road data. But road tracking methods lose their efficiencies when they are applied to tr...
ROADS EXTRACTION AND THEIR CHANGES DETECTION IN AIRBORNE IMAGES WITH THE HELP OF GIS DATA
Linear features GIS error correction gradient edge tracking
2016/1/3
This paper presents a novel routine to detect the changes of main roads with airborne images of medium-scale of 1:10,000. It mainly focuses on the changes detection of primary streets not the extracti...
ANALYSIS OF UNCERTAIN FACTORS IN AUTOMATIC EXTRACTION OF ROADS FROM SAR IMAGERY
SAR Image Uncertainty Speckle Noise Road Feature Hypothesis Testing Performance Evaluation
2015/12/30
The uncertain factors of automatic extracting roads from the Synthetic Aperture Radar (SAR) imagery have been considered in details in the paper. We consider that the key point of the extraction is th...
EARTHQUAKE DESTRUCTION ASSESSMENT OF URBAN ROADS NETWORK USING SATELLITE IMAGERY AND FUZZY INFERENCE SYSTEMS
Satellite Remote Sensing Damage Assessment Computer Vision Texture Analysis Disaster Management Fuzzy Inference Systems
2015/12/28
The idea of assessing the damages to roads network after earthquake strikes has been referred as a matter of importance for performing every systematically planned activity in the affected region. Whe...
Selection of Roads for Cartographic Generalization
Cartography Generalization Computer Vision Feature Generalization,
2015/12/16
Generalization is the task of producing multiple maps, of a different scale or purpose, from a single detailed data source. The field of generalization can be split into model generalization and carto...
AUTOMATIC BLOCKED ROADS ASSESSMENT AFTER EARTHQUAKE USING HIGH RESOLUTION SATELLITE IMAGERY
High resolution Satellite Image Earthquake Classification Texture Analysis Roads damage map
2016/1/18
In 2010, an earthquake in the city of Port-au-Prince, Haiti, happened quite by chance an accident and killed over 300000 people. According to historical data such an earthquake has not occurred in the...
Extraction of Main and Secondary Roads in VHR Images Using A Higher-Order Phase Field Model
Road Urban Satellite Segmentation Modelling Variational methods
2015/12/4
This paper addresses the issue of extracting main and secondary road networks in dense urban areas from very high resolution (VHR, ~0.61m) satellite images. The difficulty with secondary roads lies in...
3D GIS BASED EVALUATION OF THE AVAILABLE SIGHT DISTANCE TO ASSESS SAFETY OF URBAN ROADS
3D Sight Analysis Sight Distance Road Safety Mobile Mapping Digital Terrain Model Sight Obstruction Low-Cost Sensors GNSS/IMU
2015/9/21
The available sight distance (ASD) in front of the driver to detect possible conflicts with unexpected obstacles is fundamental for traffic safety. In the last 20 years, road design software (RDS) has...
DETECTING ROADS IN INFORMAL SETTLEMENTS SURROUNDING SAO PAULO CITY BY USING OBJECT-BASED CLASSIFICATION
Object-based classification urban sprawl road Ikonos update mapping
2015/8/19
Uncontrolled sprawl occurring in large cities of developing countries requires intensive mapping efforts to update geodatabases. The intense urbanization process experienced since the 70’s in Sao Paul...
Implementation of The Resulting Cost Model of Roads Network in The Geographic Information System (gis)
Road Network Analysis GIS AM/FM
2015/7/9
After reaching to the primary cost model of the roads network of the country through the analytical hierarchical process
in order to bring about an alternative route network for the traditional netwo...
AUTOMATIC LINEAR FEATURE EXTRACTION OF IRANIAN ROADS FROM HIGH RESOLUTION MULTI-SPECTRAL SATELLITE IMAGERY
Extraction Fuzzy Logic IKONOS
2015/6/2
Attaining geospatial information is a challenge for many scientific practitioners. Such information is a necessary tool for spatial
decision making. Remote Sensing (RS) is the leading art/science pr...
Unpaved roads are one of the most relevant causes of erosion process in rural regions. Locating unpaved roads in low-resolution
satellite images is not a trivial task. Although they have the spectra...
OBJECT-ORIENTED IMAGE ANALYSIS AND SEMANTIC NETWORK FOR EXTRACTING THE ROADS AND BUILDINGS FROM IKONOS PAN-SHARPENED IMAGES
Hierarchical Contextual Segmentation Object-oriented
2015/6/1
Traditional pixel-based approaches are based exclusively on the grey value of pixel itself. Thereby only the spectral information is
used for the classification. The situation becomes worse when ext...