Method for improved image segmentation

G - Physics – 06 – T

Patent

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G06T 5/00 (2006.01)

Patent

CA 2591241

An improved image segmentation algorithm is provided that identifies each object in an image. Pixels of the image are sorted based on a range of attribute values of the image. These pixels are then added to a labeling image one by one starting with an extreme point in the range of attribute values. Features are calculated for each object located and these features are matched with pre-defined acceptance criteria. If there is a match, the object is output to an output image. The steps of adding pixels to the image, evaluating the features of the resulting objects and outputting the objects are repeated until a stopping point is reached.

L'invention concerne un algorithme de segmentation d'images améliorée qui identifie chaque objet dans une image. Les pixels de l'image sont triés sur la base d'une gamme de valeurs d'attributs de l'image. Ces pixels sont ensuite ajoutés à une image d'étiquette, un par un, à commencer par un point extrême dans la gamme des valeurs d'attributs. Des traits caractéristiques sont calculés pour chaque objet localisé, et ces traits caractéristiques sont comparés aux critères d'acceptation prédéfinis. S'il y a des correspondances, l'objet est émis à destination d'une image de sortie. Les stades d'ajout de pixels à l'image, d'évaluation des traits caractéristiques des objets obtenus et d'émission des objets sont répétés jusqu'à ce qu'un point d'arrêt soit atteint.

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