A method of processing a sectional image of a sample bone...

A - Human Necessities – 61 – B

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A61B 6/03 (2006.01) G06T 5/00 (2006.01) G06T 7/60 (2006.01)

Patent

CA 2201057

A binary image of a bone section is provided to be processed. A region of interest is provided on the binary image to produce a ROI image by extracting pixels corresponding to the bone portion from the binary image within the region of interest, onto which ROI image morphometry is carried out. A series of pixels which are on the center line extending along the cortical bone portion in the ROI image. A hemi-cortical bone image is produced by using the determined center line. The hemi-cortical bone image has a wall thickness substantially half of the real wall thickness of the cortical bone portion. A template image for the cortical bone portion is produced by executing expanding operations on the hemi-cortical bone image a predetermined number of times.

Une image binaire de la coupe d'un os est présentée pour être traitée. Une région d'intérêt (RI) est prévue sur l'image binaire afin de générer une image RI par l'extraction des pixels correspondant à la partie de l'os sur l'image binaire à l'intérieur de la région d'intérêt, sur lesquels la morphométrie pour l'image RI est exécutée. Une série de pixels se trouvent sur la ligne centrale se prolongeant le long de la partie corticale de l'os dans l'image RI. Une image d'un os hémicortical est produite en utilisant la ligne centrale déterminée. L'épaisseur de la paroi dans l'image de l'os hémicortical est sensiblement la moitié de l'épaisseur réelle. Un gabarit d'image pour la partie corticale de l'os est obtenu en effectuant un nombre prédéterminé d'élargissements de l'image de l'os hémicortical.

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