Patent ID: 6434271
Filing Date: 2002-08-13
Classification: G06K

Abstract:
A method for locating objects within an image, wherein an object is represented by a plurality of enabled pixels within the image, the method comprising the steps of:defining a first representation of the image, the first representation having a plurality of first pixels, obtaining a second and a third representation of the image; the second representation having a plurality of second pixels, and the third representation having a plurality of third pixels, forming the plurality of first pixels by taking the difference between the plurality of second pixels and the plurality of third pixels, wherein at least some of the plurality of first pixels are enabled and represent the object, defining at least two orientations of the object; counting the number of enabled plurality of first pixels along the each of the two orientations; defining a threshold as a quantity of the plurality of first pixels counted; identifying portions of the plurality of first pixels exceeding the threshold; and identifying the object within the image based upon the orientation and the identified portions of the plurality of first pixels exceeding the threshold of the object within the image.