1. A system for determining objects of interest at events or locations, which comprises: a computer system running at least an application program that receives a real time stream of data from a plurality of remote portable image capture devices and analyzes the data, and a database for storing at least some of the received data wherein the application program is configured to: receive in the real time data stream from the portable image capture devices information from which the application program determines the geographic location and compass heading of the devices when the devices are using image capturing capabilities of their devices; calculate a location where a line of sight from each of the two or more devices could intersect to identify a potential object of interest; identify from the calculation a cluster of users that are associated with the potential object of interest; and store the cluster and its association with a particular object of interest.