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This document summarizes a study on edge detection and classification methods applied to X-ray images to aid in 3D vertebra shape reconstruction during pedicle screw insertion surgery. Two semi-automatic edge detection methods are investigated: 1) A wavelet-based multiscale edge detector that identifies edge points as local maxima of the gradient along gradient streamlines at different scales. 2) An active contour method called GVF snakes that uses gradient vector flow to detect edges less sensitively to in

Author

farancak

Language

EN