搜索结果: 1-15 共查到“测绘科学技术 Tunnel”相关记录15条 . 查询时间(0.046 秒)
CONTINUOUS MAPPING OF TUNNEL WALLS IN A GNSS-DENIED ENVIRONMENT
Tunnel mapping image mosaicking image bridging visual odometry GNSS-denied
2016/7/27
The need for reliable systems for capturing precise detail in tunnels has increased as the number of tunnels (e.g., for cars and trucks, trains, subways, mining and other infrastructure) has increased...
TUNNEL POINT CLOUD FILTERING METHOD BASED ON ELLIPTIC CYLINDRICAL MODEL
Elliptic Cylindrical Model Point Cloud Filtering Tunnel Central Axis Non-points Regional Segmentation
2016/7/5
The large number of bolts and screws that attached to the subway shield ring plates, along with the great amount of accessories of metal stents and electrical equipments mounted on the tunnel walls, m...
SPATIAL KNOWLEDGE CONSTRUCTION FOR THE FIRE ACCIDENT PROCESS OF THE LONG ROAD TUNNEL
Long Road Tunnel Fire Disaster Spatial Knowledge Ontology
2015/12/28
There are many kinds of public transportation systems, e.g. Xue-shan tunnel, high-speed railway, and airport shuttle are developed in Taiwan recently. The risk hidden in the space of long road tunnel ...
Development of Cross Section Management System in Tunnel Using Terrestrial Laser Scanning Technique
Terrestrial Laser Scanning Technique Cross Section Management System in Tunnel
2015/12/16
Laser scanning technology with high positional accuracy and high density will be widely applied in vast range of fields including
geomatics. Especially, the development of laser scanning technology e...
Terrestrial Laser Scanning for the Deformation Monitoring of the Thermal Pipeline Traversed Subway Tunnel Engineering
Laser Scanning Monitoring Modeling,
2015/12/16
As a kind of modern vehicle, more and more subway lines appear in order to meet the need of urban transportation. Abuilding
Beijing subway line 10 is traversed by a thermal pipeline in China. To ensu...
Implementation of a Customized GIS-based Tool for Tunnel Construction Sites Management
Geographical information science Object-oriented data model Computer Vision
2015/12/3
The geographic information system (GIS) approach has been extensively used for spatial modeling in a variety of application areas in different engineering and non engineering fields. GIS’ graphical en...
Deformation analysis of a bored tunnel by means of terrestrial laserscanning
Terrestrial laser scanning point cloud modeling tunnel deformation detection
2015/8/24
A procedure is developed, implemented and tested to detect deformations in a bored tunnel. Deformations can occur after construction of the tunnel is nished, i.e. between two measurement epochs, but a...
BUILDING A 3D REFERENCE MODEL FOR CANAL TUNNEL SURVEYING USING SONAR AND LASER SCANNING
3D Bathymetry Data processing and 3D Modeling Reference control and accuracy assessment
2015/4/23
Maintaining canal tunnels is not only a matter of cultural and historical preservation, but also a commercial necessity and a security issue. This contribution adresses the problem of building a full ...
Baseline mapping of sediment distribution in the Western Scheldt estuary prior to tunnel boring
Remote Sensing Mathematical models Measurement Synergy Monitoring SPOT Ecosystems
2015/2/5
Large infrastructural construction projects may have a profound impact on the environment and ecology of
environmentally sensitive areas. The construction of a tunnel below the Western Scheldt and th...
Efficient point cloud collision detection and analysis in a tunnel environment using kinematic laser scanning and K-D Tree search
Collision Detection K-D Tree Kinematic Laser Scanning 3D Point Clouds
2014/9/9
Measuring the structure gauge of tunnels and other narrow passages has so far been the only way to evaluate whether large vehicles can pass through them. But especially for very long vehicles like tra...
Road and Tunnel Extraction from SPOT Satellite Images Using Neural Networks
Neural Networks Road Classification Texture
2013/3/5
Road extraction from the satellite images can be used in producing road maps as well as managing and developing geospatial databases. In this work, the extraction of roads from SPOT satellite images u...
A NOVEL IMAGE ACQUISITION AND PROCESSING PROCEDURE FOR FAST TUNNEL DSM PRODUCTION
DEM/DTM Restitution Automation Orthoimage Close Range Photogrammetry
2014/4/28
In mining operations the evaluation of the stability condition of the excavated front are critic to ensure a safe and correct planning of the subsequent activities. The procedure currently used to thi...
A NEW APPROACH FOR SUBWAY TUNNEL DEFORMATION MONITORING: HIGH-RESOLUTION TERRESTRIAL LASER SCANNING
Terrestrial Laser Scanning deformation monitoring subway tunnel high precision moving least squares
2014/4/28
With the improvement of the accuracy and efficiency of laser scanning technology, high-resolution terrestrial laser scanning (TLS) technology can obtain high precise points-cloud and density distribut...
CONTINUOUSLY DEFORMATION MONITORING OF SUBWAY TUNNEL BASED ON TERRESTRIAL POINT CLOUDS
Deformation Monitoring Vertical Section Quadric Fitting Random Sample Consensus Terrestrial Laser Scanner (TLS)
2014/4/28
The deformation monitoring of subway tunnel is of extraordinary necessity. Therefore, a method for deformation monitoring based on terrestrial point clouds is proposed in this paper. First, the tradit...
CONTINUOUSLY DEFORMATION MONITORING OF SUBWAY TUNNEL BASED ON TERRESTRIAL POINT CLOUDS
Deformation Monitoring Vertical Section Quadric Fitting Random Sample Consensus Terrestrial Laser Scanner (TLS)
2014/4/28
The deformation monitoring of subway tunnel is of extraordinary necessity. Therefore, a method for deformation monitoring based on terrestrial point clouds is proposed in this paper. First, the tradit...