Keyphrases
- preserving transformations
- arc length
- affine invariant
- invariant features
- signature verification
- affine transformation
- planar curves
- moment invariants
- signature recognition
- projective invariants
- case study
- closed curves
- invariance properties
- gaussian curvature
- projective geometry
- digital signature
- shape space
- control points
- shape model
- b spline
- image matching
- similarity measure