Evaluation of multiple motion models for multiple pedestrian visual tracking

Multiple targets tracking is a challenging problem due to occlusions or identity switching. Although the use of prior information about the motion of the targets improves the tracking results, a single motion model may not capture the complex dynamic of the targets. This is a common situation with pedestrians, as each person moves in its own way, making tracking a difficult task. In this paper, this problem is faced by using a proposal based on the Interacting Multiple Model (IMM) and implemented in a Bayesian scheme through a particle filter. The core of this approach is to leave the filter choose the motion model that fits better the motion of the targets. The algorithm is evaluated, under several combinations of motion models, with middle-dense crowded scenes from the PETS 2009 dataset.