An image management system

Abstract The present invention relates to management or image data captured by a network covering a plurality of imaging b nodes. A surveillance network is arranged to receive surveillance streams from a lurality of checkpoints that are spatially separated along a route. Image data containing facial icage content is 1 extracted from the surveillance streams. Individual people are identified and an elapsed time is determined between distinct checkpoints alone the route, to track progress of people along the route. Capture images at a plurality of 40 spatially sepereted checkpoints Detect image content that is indicative of pedestrians Extract facial image data from sub-frame sections Store extracted facial image data with time stamp Match facial image content to track pedestrian progression Compare facial profiles from distinct image streams Determine elapsed time between checkpoints Calculate dwell times from the time stamp difference Figure 5