The study of pedestrian dynamics has become in the latest years an increasing field of research. A relevant number of techniciansudhave been looking for improving technologies able to detect walking people in various conditions. Several researchers haveuddedicated their works to model walking dynamics and general laws. Many studiers have developed interesting software to simulateudpedestrian behavior in all sorts of situations and environments. Nevertheless, till nowadays, no research has been carried out toudanalyze all the three over-mentioned aspects. The remarked lack in literature of a complete research, pointing out the fundamentaludfeatures of pedestrian detection techniques, pedestrian modelling and simulation and their tight relationships, motivates the draftudof this paper.udAim of the paper is, first, to provide a schematic summary of each topic. Secondly, a more detailed description of the subjects isuddisplayed, pointing out the advantages and disadvantages of each detection technology, the working logic of each model, outliningudthe inputs and the provided outputs, and the main features of the simulation software. Finally, the obtained results are summarizedudand discussed, in order to outline the correlation among the three explained themes.
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