Patent ID: 6233007
Filing Date: 2001-05-15
Classification: G01S,G06K,G06T,H04N

Abstract:
A method for tracking an object using at least one video camera outputting a video image including a current frame and a previous frame, comprising the steps of:obtaining a current frame and a previous frame of the video image including an image of the object;differencing the current and previous frames to obtain a binary image including motion regions;converting the binary image to hue saturation intensity space;extracting a motion region corresponding to the object from the converted binary image based on a hue saturation model of the color of the object;matching the motion region of the object in the current frame with the motion region of the object in the previous frame to obtain a motion vector corresponding to motion of the object between the previous frame and the current frame; andupdating a trajectory of the object based on the motion vector of the object obtained in said matching step.