EP 0403193 A2 19901219 - Method and apparatus for traffic monitoring.
Title (en)
Method and apparatus for traffic monitoring.
Title (de)
Verkehrsüberwachungsverfahren und -vorrichtung.
Title (fr)
Méthode et dispositif pour la surveillance du trafic.
Publication
Application
Priority
GB 8913946 A 19890616
Abstract (en)
A method of traffic monitoring is described which comprises forming at least first and second scene images of a scene in which traffic may be present, the images being formed at instants of time separated by a time interval. At least one of the first and second scene images is processed to form an edge image representing the occurrence of edges in the scene, and a determination is made on the basis of the edge image of the presence or absence, and spatial location, of traffic in the scene. A difference image is formed in which each pixel represents the difference between the intensity of the pixels of the first and second scene images at the corresponding point in the image, and a determination is made from the distribution of pixels of different intensities in the difference image of the presence or absence of movement in the scene.
IPC 1-7
IPC 8 full level
G08G 1/04 (2006.01)
CPC (source: EP)
G08G 1/04 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI NL
DOCDB simple family (publication)
EP 0403193 A2 19901219; EP 0403193 A3 19911211; GB 8913946 D0 19890802
DOCDB simple family (application)
EP 90306317 A 19900611; GB 8913946 A 19890616