Image binarization method

Details Image binarization method Image binarization method

G - Physics

06

K

G06K 9/38 (2006.01)

Patent

CA 2376757

The method for transforming a digital image (A) having several gray levels into a binary image (F) in which each pixel is coded over one bit, consists in applying, to each current pixel (P) of the digital image having several gray levels, several different parallel binarization processes (T1, T2, T3) each delivering as output a binary value for this current pixel and in combining (T4) the binary values delivered by the various binarization processes for each current pixel of the digital image having several gray levels so as to obtain a resultant binary value constituting the corresponding pixel of the binary image.

L'invention concerne un procédé permettant de transformer une image (A) numérique présentant plusieurs niveaux de gris en une image (F) binaire dans laquelle chaque pixel est codé sur un bit. Ce procédé consiste à mettre en oeuvre pour chaque pixel (P) courant de l'image numérique comprenant plusieurs niveaux de gris, plusieurs processus (T1, T2, T3) de binarisation différents exécutés en parallèle produisant chacun une sortie représentant une valeur binaire pour ce pixel courant, puis à combiner (T4) ces valeurs binaires fournies par les différents processus de binarisation pour chaque pixel courant de cette image à plusieurs niveaux de gris, afin d'obtenir une valeur binaire résultante constituant le pixel correspondant de l'image binaire.

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