Patent ID: 7450737
Filing Date: 2008-11-11
Classification: G06K

Abstract:
1. A head detecting apparatus comprising: a foreground extracting section for extracting a foreground region, in which a person has been taken, from an input image; a first main axis computing section for computing a main axis of the foreground region, said first main axis computing section including a first moment computing section for computing a moment around a center of gravity of the foreground region, and calculating the main axis of the foreground region based on the moment around the center of gravity of the foreground region; a head region computing section for computing a head region included in the foreground region as a part thereof, based on the main axis of the foreground region and a shape of the foreground region; an ellipse determining section for determining an ellipse to be applied to the head of the person, based on a shape of the head region; and an input section for inputting a plurality of frame images constituting a moving image as a plurality of the input images; and wherein the first main axis computing section includes: