Ribbon Networks for Modeling Navigable Paths of Autonomous Agents in Virtual Environments
IEEE Transactions on Visualization and Computer Graphics
A parametric model for oriented, navigable surfaces in virtual environments
Proceedings of the 2006 ACM international conference on Virtual reality continuum and its applications
Real-time generation of populated virtual cities
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Modeling transport networks with design pattern: application to hybrid traffic simulations
MOAS'07 Proceedings of the 18th conference on Proceedings of the 18th IASTED International Conference: modelling and simulation
Modeling transport networks with design pattern: application to hybrid traffic simulations
MS '07 The 18th IASTED International Conference on Modelling and Simulation
Real-time autonomous pedestrian navigation with groups
GVE '07 Proceedings of the IASTED International Conference on Graphics and Visualization in Engineering
Hierarchical path planning for situated agents in informed virtual geographic environments
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Survey and practice of 3d city modeling
Edutainment'06 Proceedings of the First international conference on Technologies for E-Learning and Digital Entertainment
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The Praxitele project is responsible for the design of a new kind of transportation in an urban environment, which consists of a fleet of electric public cars. These public cars are capable of autonomous motion on given journeys between stations. The realization of such a project requires experimentations with the behaviour of autonomous vehicles in the urban environment. Because of the danger connected with these kinds of experiments in a real site, it was necessary to design a virtual urban environment in which simulations could be done.Animations or simulations in Virtual Urban Environments can be performed in various ways, but one common element of such systems is that they require a model of the environment. Reproducing the real traffic of a city, as completely as possible, implies the simulation of autonomous entities like living beings. Such entities are able to perceive their environment, to communicate with other creatures and to execute some actions either on themselves or on their environment. Interactions between an object and its environment are, most of the time, very simple: sensors and actuators are reduced to minimal capabilities which permit only to avoid obstacles in a 2D or 3D world. This is due to the fact that databases for virtual environments are often confined to the geometric level, when they must also contain physical, topological and semantic information. Accordingly, in this paper we propose a model which is designed to connect different levels of representation, by assembling geometric, topological and semantic data in the field of traffic simulation, and its implementation in VUEMS, a Modeling System of Urban Road Network. From real world data (when available), we construct a Model of the Virtual Urban Environment, integrating all the information needed to describe the realistic behavior of car drivers and pedestrians.