Patent ID: 6774908
Filing Date: 2004-08-10
Classification: G06F,G06K,G06T,H04N

Abstract:
A method for automatically tracking an object selected in a sequence of video frames, the method comprising the steps of:(a) determining an initial color variable range for said selected pixel object; (b) sampling pixels at a first predetermined radius relative to said selected pixel object; (c) locating pixels within said initial color variable range defining located pixels; (d) determining a second color variable range for said located pixels; (e) sampling a second predetermined pixel radius, larger than said first predetermined pixel radius; (f) locating pixels in said second color variable range; (g) calculating a third color range for said pixels located in step (f); (h) locating pixels in said third color range; (i) determining the centroid and coordinates of pixels located in step (h); (j) storing the centroid and coordinates determined in step (i); and (k) repeating steps (b)-(j) starting at the centroid of the previous frame until all frames in the video sequence have been processed.