Scale based model for the psychology of crowds into virtual environments

In this paper, we study a way to simulate crowds for virtual environments such as used in the cinema or the video game industries. Depending on its context, a crowd can adopt different behaviors: it can be ambulant, aggressive, expressive or in an emergency situation, get into panic and flee. The main idea is to hold upon observations and assumptions made by crowd psychology studies in order to formulate a model up to reproduce as close as possible their behavior, depending on the context. To do so, we are considering the use of a microscopic model based on a scale concept: the Scale Based Model (SBM). This model is based on the psychological profile of the individuals to build crowds of different natures, crowds that will then have an influence on their own members. We will also bring up with the question of the model implementation in a real time environment.