Creating Real-Time Intelligent Interactive Virtual Environment

Crowd simulations are widely used to study and predict the human behavior in disaster scenarios. In this paper, we introduce real-time user interactivity into the simulation process of virtual environments (e.g., buildings with rooms and doors between them). We develop a new tactical path-planning model that translates the interactive virtual environment into an abstract graph in order to calculate the shortest paths in real time. Our extension of the Vadere simulation framework with interactivity features allows the users to better understand the actual problem situations and to analyze them. Our experiments demonstrate the effectiveness of the approach by simulating the evacuation of students in groups and as individuals from the Schloss Muenster (the administrative building of the University of Muenster) in Germany. During simulation run time, the user can interact with the virtual environment spontaneously (e.g., by opening and closing doors) while our model recalculates the shortest paths for agents in real time.

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Real-Time Optimal Reach-Posture Prediction in a New Interactive Virtual Environment

Journal of Computer Science and Technology ◽

10.1007/s11390-006-0189-3 ◽

2006 ◽

Vol 21 (2) ◽

pp. 189-198 ◽

Cited By ~ 32

Author(s):

Jingzhou Yang ◽

R. Timothy Marler ◽

Steven Beck ◽

Karim Abdel-Malek ◽

Joo Kim

Keyword(s):

Real Time ◽

Virtual Environment ◽

Time Optimal ◽

Posture Prediction ◽

Interactive Virtual Environment

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On-Line Interactive Virtual Environment (OLIVE)

PsycEXTRA Dataset ◽

10.1037/e564862012-046 ◽

2009 ◽

Author(s):

Rodney Long

Keyword(s):

Virtual Environment ◽

On Line ◽

Interactive Virtual Environment

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Real-time fluid simulation in a dynamic virtual environment

IEEE Computer Graphics and Applications ◽

10.1109/38.586018 ◽

1997 ◽

Vol 17 (3) ◽

pp. 52-61 ◽

Cited By ~ 38

Author(s):

J.X. Chen ◽

N.d.V. Lobo ◽

C.E. Hughes ◽

J.M. Moshell

Keyword(s):

Real Time ◽

Virtual Environment ◽

Fluid Simulation

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The Modeling and Locating Technology of Assembly\Disassembly Tools in Virtual Environment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.483.229 ◽

2013 ◽

Vol 483 ◽

pp. 229-233

Author(s):

Yi Liu ◽

Shi Qi Li ◽

Jun Feng Wang

Keyword(s):

Real Time ◽

Virtual Environment ◽

Virtual Assembly ◽

Vector Model ◽

Assembly System ◽

Virtual Scene ◽

Matching Constraints ◽

Point Vector

This paper presents a feasible approach for modeling and locating of assembly\disassembly tools in the virtual scene: First, a novel point-vector model for tool is presented by means of abstracting the locating constraints of tools; Then, the mapping relationship for locating constraints between tools and parts is detailed; Finally, the best matching constraints algorithm is proposed on basis of point-vector model, which can calculate the locating constraints to the triangle model of part in real time. The proposed method has been integrated in the virtual assembly system to solve practical assembly problems.

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An Interactive Virtual Environment for Programming Modular Robots

Volume 9: 2015 ASME/IEEE International Conference on Mechatronic and Embedded Systems and Applications ◽

10.1115/detc2015-47705 ◽

2015 ◽

Cited By ~ 3

Author(s):

Kevin J. Gucwa ◽

Harry H. Cheng

Keyword(s):

User Interface ◽

Virtual Environment ◽

Open Source Software ◽

Modular Robots ◽

Programming Environment ◽

Software Projects ◽

Educational Environments ◽

Software Platforms ◽

Interactive View ◽

Interactive Virtual Environment

The design of RoboSim, a virtual environment for modular robots which controls simulated robots with code written for the hardware robots without modification, is described in detail in this paper along with its applications in educational environments. RoboSim integrates into the Ch programming environment, a C/C++ interpreter, that provides the ability to remotely control robots through interpreted C/C++ code allowing users to alternate between hardware and virtual robots without modifying the code. Open source software projects Open Dynamics Engine, OpenSceneGraph, and Qt are employed to produce the virtual environment and user interface which provide the capability of running on all major software platforms. The design of the software includes multiple library modules each specific to a particular task; therefore the simulation library and Graphical User Interface (GUI) can link against only the necessary libraries. The GUI links against the graphical library and XML library to give an interactive view of the RoboSim Scene as users are adding robots and obstacles into both the GUI and simulation. Execution of Ch code generates a new RoboSim Scene window which has the entire simulation that utilizes the simulation, graphical, xml, and callback libraries, in addition to the identical Scene from the GUI. It generates its own window for the user to view and interact with the progress of the simulation.

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