Detection of abnormal behaviour in video objects

• Main Authors: MCLEISH, DAVID, SHELLSHEAR, ANDREW JOHN
• Format: Patent
• Language: English
• Published: 13.06.2013
• Subjects: ALARM SYSTEMS; CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

DETECTION OF ABNORMAL BEHAVIOUR IN VIDEO OBJECTS Disclosed herein are a method, system, and computer program product for classifying a behaviour of a detected object in a video frame, wherein the video frame includes a plurality of blocks and the detected object is associated with a subset of the plurality of blocks and a set of parameters. The method includes the step of associating a behaviour model with each of 5 the plurality of blocks, wherein each behaviour model (500) includes a set of behaviour modes (504, 505, 506, 507, 508). The method then performs the steps, for each block in the video frame associated with the detected object, of: (i) determining a set of behaviour statistics associated with the detected object, based on the detected object and the set of parameters; and (ii) comparing the determined set of behaviour statistics with each behaviour mode in the set to of behaviour modes associated with that block (704) to determine an abnormality measure associated with the block (707). The method then classifies the behaviour of the detected object based on the abnormality measures associated with the subset of the plurality of blocks associated with the detected object. - I / 13 Camera 1 2 (104 - 106 Lens Object Detection Object tracking Abnormal behaviour syem Subsystem subsystem detection subsystem Viewer/Recorder Fig. 1 nA 1CAf\ 1