Patent ID: 9704264
Date: 2017-07-11
CPC Classifications: G06T

Claim:
1. A method of tracking a target in a sequence of images representing a scene, the method comprising, for each current image: detecting objects in the scene, each object detected being characterized by a position and a dimension in the current image, a temporal association, in which an attempt is made to associate each object detected in the current image with an object detected in a previous image of the sequence as claimed in their respective positions in the images, each set of objects detected in a continuous sequence of images forming a tracklet, one of the tracklets being assigned to a first target, determining a second target in the current image, the detected object best corresponding to a given search area determined for a previous image of the sequence being assigned to the second target, comparing between an identity of the detected object assigned to the first target and an identity of the detected object assigned to the second target, if different identities, determining the detected object that best corresponds to a dynamic of a final target, if the first target best corresponds to the dynamics of the final target, updating the search area for the current image based on a position of the first target, if the second target best corresponds to the dynamics of the final target, updating the search area for the current image based on a position of the second target, and searching for the final target in the search area for the current image by comparing areas of the current image with a reference model representative of the final target.