Gradient Vector Flow
Originally posted by Dan on 06:00 Fri 27 January 2006, last modified 12:17 Mon 7 May 2007.
File under: active contours object segmentation phd
As already stated, active contours have difficulties progressing into concave boundaries. This has motivated research in this area, with some prominent findings, one of which is discussed here.
In order to analyse the frequency components of a curve using Fourier we must first represent it mathematically. As we are working with images, a discrete spatial domain, then we have to deal with discretisation.