Collective Crowd Formation Transform with Mutual Information–Based Runtime Feedback. (18th August 2014)

• Record Type: Journal Article
• Authors: Xu, Mingliang; Wu, Yunpeng; Ye, Yangdong; Farkas, Illes; Jiang, Hao; Deng, Zhigang
• Is Part Of: Computer graphics forum. Volume 34:Number 1(2015)
• Page Start: 60
• Page End: 73
• Publication Date: 2014-08-18
• Subjects: behavioral animation -- animation -- motion control -- animation -- I.3.7 [Computer Graphics]: 3D Graphics and Realism Animation -- I.3.6 [Computer Graphics]: Methodology and Techniques Interaction Techniques; Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.12459
• Languages: English
• ISSNs: 0167-7055

Abstract

Abstract : This paper introduces a new crowd formation transform approach to achieve visually pleasing group formation transition and control. Its core idea is to transform crowd formation shapes with a least‐effort pair assignment using the Kuhn–Munkres algorithm, discover clusters of agent subgroups using affinity propagation and Delaunay triangulation algorithms, and apply subgroup‐based SFM (social force model) to the agent subgroups to achieve alignment, cohesion and collision avoidance. Abstract: This paper introduces a new crowd formation transform approach to achieve visually pleasing group formation transition and control. Its core idea is to transform crowd formation shapes with a least effort pair assignment using the Kuhn–Munkres algorithm, discover clusters of agent subgroups using affinity propagation and Delaunay triangulation algorithms and apply subgroup‐based social force model (SFM) to the agent subgroups to achieve alignment, cohesion and collision avoidance. Meanwhile, mutual information of the dynamic crowd is used to guide agents' movement at runtime. This approach combines both macroscopic (involving least effort position assignment and clustering) and microscopic (involving SFM) controls of the crowd transformation to maximally maintain subgroups' local stability and dynamic collective behaviour, while minimizing the overall effort (i.e. travelling distance) of the agents during the transformation. Through simulation experiments and comparisons, we demonstrate that this approach is efficient and effective to generate visually pleasing and smooth transformations and outperform several existing crowd simulation approaches including reciprocal velocity avoidances, optimal reciprocal collision avoidance and OpenSteer.