Method and system for line segment extraction

G - Physics – 06 – T

Patent

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G06T 7/60 (2006.01) G06K 9/50 (2006.01) G06T 5/00 (2006.01)

Patent

CA 2628553

A method for operating a computer system for extracting line segments from a digital image, the method comprising receiving the digital image comprising a first plurality of edge pixels associated with a first level of components of a connected component and a second plurality of edge pixels associated with a second level of components of the connected component, wherein the first level of components and the second level of components comprise a plurality of segments, processing each pixel of the first plurality of pixels to assign the pixel to a component of the first level of components, after processing each pixel of the first plurality of pixels, processing each pixel of the second plurality of pixels to assign the pixel to a component of the second level of components, and, for each component of the first level of components and the second level of components, processing each pixel to assign the pixel to a segment of the plurality of segments.

L'invention concerne un procédé d'exploitation d'un système d'information pour l'extraction de segments de ligne à partir d'une image numérique. Le procédé consiste à : recevoir l'image numérique composée d'une pluralité de pixels de bord associés à un premier niveau d'éléments d'un élément connecté et une deuxième pluralité de pixels de bord associés à un deuxième niveau d'éléments de l'élément connecté, le premier niveau d'éléments et le deuxième niveau d'éléments comprenant une pluralité de segments; traiter chaque pixel de la première pluralité de pixels pour attribuer le pixel à un élément du premier niveau d'éléments; après le traitement de chaque pixel de la première pluralité de pixels, traiter chaque pixel de la deuxième pluralité de pixels pour attribuer le pixel à un élément du deuxième niveau d'éléments; et, pour chaque élément du premier niveau d'éléments et du deuxième niveau d'éléments, traiter chaque pixel pour attribuer le pixel à un segment de la pluralité de segments.

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