1. A computer-implemented method for creating a histogram of oriented occurrences (HO2), the method being executed by at least one processor, comprising the steps of: (a) detecting and tracking movement of a plurality of entities in at least two or more images over space and time; (b) designating one of the plurality of entities as a reference entity; (c) defining a local 2-dimensional ground plane coordinate system centered on and oriented with respect to the reference entity; (d) partitioning the 2-dimensional ground plane into a plurality of non-overlapping bins, the bins forming a histogram, a bin tracking a number of occurrences of an entity class; and (e) determining one or more interactions over space and time between the tracked plurality of entities based on the partitioning of the ground plane with the reference entity as the frame of reference.