GRDILATE Morphological dilation on graph.

   LBL2 = grDilate(EDGES, LBL1)
   Each label of the graph is assigned the highest label of its
   neighbours, or it keeps the same label this one is bigger.

   Example
   grDilate

   See also
   grErode, grOpen, grClose


 ------
 Author: David Legland
 e-mail: david.legland@grignon.inra.fr
 Created: 2006-01-20
 Copyright 2006 INRA - CEPIA Nantes - MIAJ (Jouy-en-Josas).

Package: matgeom