AUTOMATIC TIME SIGNATURE-BASED VIDEO MATCHING FOR A CAMERA NETWORK

摘要

A method for automatically matching video streams from two cameras of a camera network includes obtaining a video stream of frames that are acquired by each of the cameras. Each video stream includes images of moving objects. A time signature for each of the video streams is calculated. Each time signature is indicative of a time at which an image of one the objects is located at a predetermined part of the frame. A temporal offset of one of the signatures relative to the other signature is calculated such that, when applied to one of the signatures, a correspondence between the signatures is maximized. The temporal offset is applicable to video streams that are acquired by the two cameras to determine if a moving object that is imaged by one of the cameras is identical to a moving object that is imaged by the other camera.

主权项

1. A method for automatically matching video streams from two cameras of a camera network, the method comprising:
obtaining a video stream of frames that are acquired by each of the cameras, each video stream including images of a plurality of moving objects; calculating a time signature for each of the video streams, each time signature being indicative of a time at which an image of one of said plurality of moving objects is located at a predetermined part of the frame; and calculating a temporal offset of one of the signatures relative to the other signature that, when applied to said one of the signatures, substantially maximizes a correspondence between said one of the signatures and the other signature, the temporal offset being applicable to video streams that are acquired by the two cameras to determine if a moving object that is imaged by one of the cameras is identical to a moving object that is imaged by the other of the cameras.