Title :
A wavelet-frame based image force model for active contouring algorithms
Author :
Wu, Hsien-Hsun ; Liu, Jyh-Charn ; Chui, Charles
Author_Institution :
Cytokinetics Inc., San Francisco, CA, USA
fDate :
11/1/2000 12:00:00 AM
Abstract :
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
Keywords :
discrete wavelet transforms; edge detection; image representation; image resolution; DWTF coefficients; active contouring algorithms; convexity; directional image force; discrete wavelet frame transform; edge orientation; inner product; multiple resolution levels; noise immunity; snake algorithms; wavelet frame coefficients; wavelet-frame based image force model; zero crossing strength; Computer science; Discrete wavelet transforms; Image edge detection; Image segmentation; Noise level; Noise shaping; Pixel; Polarization; Shape control; Zero current switching;
Journal_Title :
Image Processing, IEEE Transactions on
