A Review of Collision Avoidance Technique for Crowd Simulation

Crowd systems are widely being exploited in a number of virtual environment applications such as games, virtual world and entertainment. These kinds of applications can provide the immersive feeling into the static scenes and therefore enhancing the reality of the systems. The problems involved in crowd modelling when we only focus on the crowds. For instance, the collision avoidance among a large number of individuals in the same area requires different resolving strategies in comparison with the methods used to avoid collisions between just two individuals. Collision avoidance is an important element that needs to be tackled if we want to simulate the crowd system. By utilizing the collision avoidance, it will produce higher level of realism of crowd system as well as to make the system becomes more interesting. This paper investigates the importance of collision avoidance for crowd system in virtual environment. The comparisons among previous techniques have been presented here in order to aid the selection of our future research direction.