X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fimage-1.0.15%2Fimopen.m;fp=octave_packages%2Fimage-1.0.15%2Fimopen.m;h=d5c814d933d34689938140c28affa1688d5bb1b6;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/image-1.0.15/imopen.m b/octave_packages/image-1.0.15/imopen.m
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+## Copyright (C) 2008 Soren Hauberg
+## 
+## This program is free software; you can redistribute it and/or
+## modify it under the terms of the GNU General Public License
+## as published by the Free Software Foundation; either version 2
+## of the License, or (at your option) any later version.
+## 
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} @var{B} = imopen (@var{A}, @var{se})
+## Perform morphological opening on a given image.
+## The image @var{A} must be a grayscale or binary image, and @var{se} must be a
+## structuring element.
+##
+## The opening corresponds to an erosion followed by a dilation of the image, i.e.
+## @example
+## B = imdilate(imerode(A, se), se);
+## @end example
+## @seealso{imdilate, imerode, imclose}
+## @end deftypefn
+
+function retval = imopen(im, se)
+  ## Checkinput
+  if (nargin != 2)
+    print_usage();
+  endif
+  if (!ismatrix(im) || !isreal(im))
+    error("imopen: first input argument must be a real matrix");
+  endif
+  if (!ismatrix(se) || !isreal(se))
+    error("imopen: second input argument must be a real matrix");
+  endif
+  
+  ## Perform filtering
+  retval = imdilate(imerode(im, se), se);
+
+endfunction