Research On Storyboard-based Motion Simulation For Virtual Crowd

With the development of virtual reality technology, virtual crowd movement simulation has been widely used, such as large public places design, training people to prevent the accident, emergency drills and so on. This paper conducts in-depth theoretical study in virtual crowd simulation, and establishes a virtual crowd motion simulation prototype system based on storyboard.The main work of this paper is as follow:1. Analysis the information contained in the storyboard which used in current film and television production, learn features from the classic storyboard, design the two-dimensional graph which describing the information of crowd movement, this two-dimensional graph is used as a new input method of crowd simulation.2. Estabilsh a crowd motion control model based on group. Accroding to crowd behavior theory, from the two-dimensional graph, extract the information about the distribution of individuals and crowd movement routes, divide the individuals into multiple samples, the samples are classified as a class which have the similar distribution, establish the crowd formation model.3. Using the existing crowd formation model, establish the initial distribution in three-dimensional scene as needed, and compute the sigle path belong to each group accrroding to the distance between the group and the routes. And propose real-time collision detection strategy to avoid the obstacle for crowd, use of existing OGRE triangular surface ray detection library MOC.4. Establish the virtual crowd motion simulation prototype system based on storyboard. The system is built on OGRE and Visual C++.NET, and uses the technology of OGRE embedded MFC. The system provides series of function, such as graph file import, extract infomation from graph, crowd model import, and control movement and so on. In this system, the information extract from graph stored in XML file which used as an interface in system.This paper combines virtual crowd simulation with storyboard, using computer simulates the scenes which described by two-dimensional graph. In film and television production and other fields, it can not only save manpower and resources, but also for scene setting can be modified as more times to observe the simulation.