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Conventional edge-detection methods suffer from the dislocation of curved surfaces due to the PSF. We propose a new method that uses the isophote curvature to circumvent this. It is accurate for objects with locally constant curvature, even for small objects (like blood vessels) and in the presence of noise.
Index Terms- Edge and feature detection.

F. A. Gerritsen, A. Vilanova, L. J. van Vliet and H. Bouma, "Correction for the Dislocation of Curved Surfaces Caused by the PSF in 2D and 3D CT Images," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 27, no. , pp. 1501-1507, 2005.
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