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.. Tracé-du-contouràcontour-`-contourà-détecter, en pointillé) et de la courbe initiale (en noir), l'attraction de la courbe par les points de contour dont la courbure est extrémale est représentée dans la figure (b) La courbe obtenue permet une ´ evaluation plus précise de la position des points de contour. L'utilisation d'une force d'attraction classique ne permet pas une reconstruction fiable des points de contour (c)