A wavelet-frame based image force model for active contouring algorithms. Academic Article uri icon


  • This paper proposes a directional image force (DIF) for active contouring. DIF is the inner product of the zero crossing strength (ZCS) of wavelet frame coefficients, and the normal of a snake, by representing strength and orientation of edges at multiple resolution levels. DIF markedly improves the immunity of snakes to noise and convexity.

published proceedings

  • IEEE Trans Image Process

author list (cited authors)

  • Wu, H. H., Liu, J. C., & Chui, C.

citation count

  • 18

complete list of authors

  • Wu, HH||Liu, JC||Chui, C

publication date

  • December 2000