Table 1.

List of component technologies and supporting approaches for smart video surveillance

Component technology	Supporting approach
Object detection	Adaptive background subtraction with healing and salient motion detection.
Two-dimensional object tracking	Maximum likelihood classification scheme to resolve foreground pixels into the component objects.
Three-dimensional wide-baseline stereo object tracking	Using two overlapping views of the scene and locating the same scene point in the two views using two PTZ cameras. 3D night-vision stereoscopic photogrammetry
Object classification	An image-based approach and a video tracking-based approach.
Object structure analysis	Detection technique uses the smoothed silhouette of the foreground object, as segmented using background subtraction.
Face cataloger application	The face cataloger uses computer-controlled PTZ cameras driven by a 3-D wide-baseline stereo tracking system. The PTZ cameras automatically acquire zoomed-in views of a person’s head without constraining the subject to be at a particular location.