Title: Video imaging systems
Application Number: 97198816 Application Date: 1997.07.28
Publication Number: 1233336 Publication Date: 1999.10.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06T7/20;G07C9/00;G08B13/194;H04N7/18
Applicant(s) Name: Footfall Limited Address:
Inventor(s) Name: B. S. Barnes
Attorney & Agent: zou guangxin
Abstract:
    Flow of traffic through an area is monitored by producing a video image of the area using a camera (10), dividing the video image into a matrix of pixels (23), sampling the pixels (23) of the whole video image at low resolution to detect changes in the pixels (23) which will indicate an object of interest and sampling the pixels of a local area (25) of the video image centred on said object of interest, at high resolution to detect the size of the object of interest and its direction of movement.
Time: 10