Meyer's watershed transform of human face




Upper Left: Model image
Upper Right: A facial marker and a background marker imposed on the morphological gradient image
Lower Left: Catchement basin corresponding to the model's facial region
Lower Right: A sensible segmentation of the facial region

In this model's facial image, her facial region is relatively bright compared to a surrounding region that consists of the hair and the neck.  After taking a sequence of an opening and a closing operation on the raw image, a morphological gradient image was obtained and two markers were imposed interactively.  The facial contour   represented  the highest crest-line of the gradient surrounding the facial marker.  Thus, Meyer's watershed transform resulted in a sensible segmentation of the model's facial region. (To learn  about this model's photographs, please contact dkim@med.unc.edu)