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Ontology-based approaches for improving the interoperability between 3D urban models
Urban models 3D city models ontologies information management semantics
2010/9/29
3D geodata are more and more available as well as realtime visualization possibilities with free three-dimensional viewers such as Google Earth. This implies a growing demand of 3D city models, which ...
A 3D LINEARIZED INVERSE SCATTERING METHOD FOR SCATTERERS IN A TWO LAYERED MEDIUM
ultrasonic testing linearized inverse scattering analysis layered Medium aperture limitation
2008/12/25
This paper presents a 3D linearized inverse scattering method for shape reconstruction of obstacles in a two layered medium. The problem here is to estimate the shape of an obstacle embedded in the b...
DEVELOPMENT OF 3D FLAW DETECTION SYSTEM WITH MULTI-CHANNEL PLANAR ARRAY PROBES AND 3D SAFT ALGORITHMS
multi-channel planar array probe synthetic aperture focusing technique beam-spread angle three-dimensional defects
2008/12/24
Multi-channel planar array probes had been developed in order to improve detectability of three-dimensional defects. The ultrasonic system, which is applicable to the planar array probes, was develop...
Galerkin Meshless Formulations for 3D Beam Problems
Meshless Formulations EFG 3D Elasticity Monte-Carlo Integration Techniques
2010/8/18
The main idea of meshless methods is to approximate the unknown field by a linear combination of shape functions built without having recourse to a mesh of the domain. The computational domain is disc...
RFID based 3D buried assets location system
buried asset location system data management RFID utility
2010/9/28
This paper presents research aimed at developing a three dimensional (3D) buried assets locating system based on Radio Frequency Identification (RFID) technology. RFID is employed to improve the locat...
A crash avoidance framework for heavy equipment control systems using 3D imaging sensors
crash avoidance path planning spatial modeling object tracking
2010/9/28
This paper presents a preliminary crash avoidance framework for heavy equipment control systems. Safe equipment operation is a major concern on construction sites since fatal on-site injuries are an i...
3D range imaging camera sensing for active safety in construction
3D range imaging real-time data collection and processing remote sensing background subtraction occupancy grid safety
2010/9/28
Accident reports in the United States’ construction industry show over 1,000 fatalities for each of the past eleven years. Most of these accidents are related to falls and close contacts to equipment ...
Variable-speed object motion in 3D visualizations of discrete-event construction simulation models
animation construction operations discrete-event simulation verification validation
2010/9/28
This paper presents research that addresses the problem of describing the accurate, variable-speed motion of simulation objects on realistically-shaped trajectories (i.e. paths) in animations of discr...