P Gouton and I Foucherot (France)
Directional filtering, Ridge-line detector, grain boundary extraction, wavelet filter
Contour detection remains one of the major points in
the segmentation of images. Several surveys have been
carried out on the subject. Indeed, the techniques of
shape recognition in artificial vision, the search for
defects in industrial parts or the characterisation of
certain illnesses in medical imaging are based on the
extraction of image contours.
In this article, we are presenting an optimal filter for the
detection of ridge-line. An extension in directional
wavelet is proposed in order to take into account all the
main directions of the image (or the multiscale
character of the required information).