A system and method for filtering and automatic detection of...

Details A system and method for filtering and automatic detection of... A system and method for filtering and automatic detection of...

G - Physics

06

K

G06K 9/46 (2006.01) G06T 7/60 (2006.01)

Patent

CA 2545448

A system and method for determining the presence or absence of candidate objects in a digital image by computing (20) a gradient field of the digital image and then applying predetermined filters (30) to the gradient field to obtain a response image which can be further processed to detect the objects (38). The application of these filters to the digital image can be performed by convolution and the filters can be adapted based on the shape of the object to be searched.

L'invention porte sur un système et un procédé qui permettent de déterminer la présence ou l'absence d'objets candidats dans une image numérique en calculant (20) un champ-gradient de l'image numérique et en appliquant ensuite des filtres prédéterminés (30) au champ-gradient afin d'obtenir une image réponse que l'on peut soumettre à un traitement supplémentaire afin de détecter les objets (38). L'application de ces filtres à l'image numérique peut s'effectuer par convolution et les filtres peuvent être adaptés en fonction de la forme de l'objet à rechercher.

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