Segmentation process for machine reading of handwritten...

Details Segmentation process for machine reading of handwritten... Segmentation process for machine reading of handwritten...

G - Physics

06

K

G06K 9/36 (2006.01) G06K 9/42 (2006.01)

Patent

CA 2046776

An improved machine process for recognizing the transition point between lettersand digits in handwritten text is disclosed. The script, digits and/or letters, is mapped onto a pixel matrix. The entropy for each column for a range of assumed slant angles is analyzed to determine the angle at which image entropy is minimum. By reverse-shifting the pixel array an amount equal to this angle, the slant component of the script is verticalized and the segmentation step which follows is more accurately accomplished.

L'invention est une méthode de traitement par machine qui permet de reconnaître le point de transition entre les lettres et les chiffres dans les textes manuscrits. Le script, les chiffres et/ou les lettres sont mis en correspondance avec une matrice de pixels. L'entropie de chaque colonne pour une gamme d'angles d'inclinaison donnée est analysée pour déterminer l'angle auquel l'entropie de l'image est minimale. En rétrogradant le réseau de pixels d'une quantité égale à cet angle, la composante d'inclinaison du script est verticalisée et la segmentation qui suit est exécutée de façon plus précise.

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