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J Digit Imaging. 2009 Jun;22(3):309-18. doi: 10.1007/s10278-007-9099-3. Epub 2008 Feb 14.

Spine localization in X-ray images using interest point detection.

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  • 1Computer Science Department, Faculty of Engineering, Rue de Houdain 9, Mons, Belgium.


This study was conducted to evaluate a new method used to calculate vertebra orientation in medical x-ray images. The goal of this work is to develop an x-ray image segmentation approach used to identify the location and the orientation of the cervical vertebrae in medical images. We propose a method for localization of vertebrae by extracting the anterior-left-faces of vertebra contours. This approach is based on automatic corner points of interest detection. For this task, we use the Harris corner detector. The final goal is to determine vertebral motion induced by their movement between two or several positions. The proposed system proceeds in several phases as follows: (a) image acquisition, (b) corner detection, (c) extracting of the corners belonging to vertebra left sides, (d) global estimation of the spine curvature, and (e) anterior face vertebra detection.

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