Method and apparatus for analysing an image

G - Physics – 06 – T

Patent

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G06T 7/00 (2006.01) G01N 15/14 (2006.01) G01N 21/77 (2006.01) G01N 33/53 (2006.01) G01N 33/543 (2006.01)

Patent

CA 2245971

A method of analysing an image to obtain an image value. The image comprises a defined array of pixel values. The method comprises (1) determining the highest pixel value in the image; (2) calculating a lower threshold pixel value from the highest pixel value determined in step (1) in accordance with a predetermined algorithm; and (3) obtaining the image value by statistically analysing the pixel values in the image which lie in a range defined by the lower threshold pixel value calculated in step (2).

Méthode d'analyse d'une image visant à obtenir une valeur d'image. L'image comprend un réseau défini de valeurs de pixel. La méthode comprend les étapes suivantes : 1) déterminer la valeur de pixel la plus élevée de l'image; 2) calculer une valeur de pixel constituant un seuil inférieur à partir de la valeur déterminée à la première étape, conformément à un algorithme prédéterminé; et 3) obtenir la valeur d'image par analyse statistique des valeurs de pixel de l'image qui se trouvent dans une plage définie par la valeur de seuil inférieur calculée à la deuxième étape.

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