Patent ID: 7263227
Filing Date: 2007-08-28
Classification: G06K

Abstract:
1. An activity detection system, comprising: a connected component analyzer that determines a quantity of connected components in or intersecting a region surrounding a pixel by maintaining an identity of substantially all the quantity of connected components and a relative quantity of each connected component ion the region surrounding the pixel; an activity detector that provides an activity map output based, at least in part, upon the quantity of connected components in or intersecting the region; wherein said activity detector identifies bounding boxes of the connected components, said bounding boxes are enlarged and creates a derivate image of the enlarged bounding boxes; and an image processor that assigns the pixel to one of a background or a foreground based at least in part upon the quantity of connected components in or intersecting the region surrounding the pixel; wherein the image processor assigns to the foreground based at least in part upon a determination that the quantity of connected components exceeds a first threshold, and assigns the pixel to the background based at least in part upon a determination that the quantity of connected components is less than a second threshold.