Finite quadric segments with four conic boundary curves.
Gerhard GeiseUwe LangbeckerPublished in: Comput. Aided Geom. Des. (1990)
Keyphrases
- line segments
- straight line segments
- unit length
- straight line
- closed curves
- curve segments
- critical points
- closed contours
- geodesic active contours
- endpoints
- polygonal approximation
- boundary points
- finite number
- object boundaries
- minimal length
- digital curves
- hough transform
- projective invariants
- b spline
- edge points
- occluding contours
- surface patches
- image gradient
- active contour model
- shape analysis