Video imaging systems

G - Physics – 07 – C

Patent

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Details

G07C 9/00 (2006.01) G06K 9/32 (2006.01) G08B 13/194 (2006.01) G08G 1/04 (2006.01) H04N 7/18 (2006.01)

Patent

CA 2263836

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.

On surveille le débit de la circulation dans une région en produisant des images vidéo de la région concernée au moyen d'une caméra (10), en divisant l'image vidéo en une matrice de pixels (23), en échantillonnant les pixels (23) de la totalité de l'image vidéo à basse résolution afin de détecter tout changement dans les pixels (23) pouvant indiquer la présence d'un objet digne d'intérêt, et en échantillonnant les pixels d'une région locale (25) de l'image vidéo centrée sur l'objet concerné à haute résolution afin de déterminer la taille et la direction du mouvement dudit objet.

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