[Octave-cvsupdate] SF.net SVN: octave:[6992] trunk/octave-forge/main/image/inst/bwcount.m

[<ha...@us...>]

Revision: 6992
          http://octave.svn.sourceforge.net/octave/?rev=6992&view=rev
Author:   hauberg
Date:     2010-03-05 02:49:50 +0000 (Fri, 05 Mar 2010)

Log Message:
-----------
Remove 'bwcount' as we now have regionprops

Removed Paths:
-------------
    trunk/octave-forge/main/image/inst/bwcount.m

Deleted: trunk/octave-forge/main/image/inst/bwcount.m
===================================================================
--- trunk/octave-forge/main/image/inst/bwcount.m	2010-03-05 02:48:41 UTC (rev 6991)
+++ trunk/octave-forge/main/image/inst/bwcount.m	2010-03-05 02:49:50 UTC (rev 6992)
@@ -1,131 +0,0 @@
-## (C) 2010 Muthiah Annamalai <mut...@gm...>
-## 
-## 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.
-##
-## You should have received a copy of the GNU General Public License
-## along with this program; If not, see <http://www.gnu.org/licenses/>.
-## 
-
-## Find the blobs in a binary image, return the number,
-## position of blobs and area. Connected-ness is taken 
-## in the 8-neighborhood of the images.
-## 
-## Input: 'img' a binary image. Grayscale images with non-zero values
-##        taken as logical 1.
-## 
-## Output: result structure with elements, nblob - gives number of contours,
-##         a cell array of position coordinates as 2xN matrix of indices,
-##         and a matrix of blobarea. Indices correspond to the enumerated
-##         contours in the same order.
-## 
-## eg: load 'smiley.dat'; r = bwcount(smiley)
-## r =
-## {
-##     nblob =  4
-##     blobpos = {4 element cell-array of 2xN matrices}
-##     blobarea = [ 28    4    4    4 ]
-## }
-##
-function result = bwcount( origimg )
-
-  result = {}; result.nblob = 0; result.blobpos = {}; result.blobarea = [];
-
-  ## Standard Contour finding algoritm using queues.
-  img = origimg; irows = size( img, 1 ); icols = size( img, 2 );
-  while ( 1 )
-    [rpos,cpos] = find( img > 0 );
-    if ( isempty( rpos ) | isempty( cpos ) )
-        break;
-    end
-    rpos = rpos(1); cpos = cpos(1);
-    
-    ## Queue of positions to visit.
-    q = [rpos;cpos]; bpos = [];
-    while( ~isempty( q ) )
-        ## dequeue the next 'on' pixel and save it as part of our contour.
-        rpos = q(1,1); cpos = q(2,1); q = q(:,2:end);
-        bpos = [ bpos, [rpos; cpos]];
-        
-        ## check 8-connected nbhd in a clockwise fashion
-        ## and ( turn-off pixel ) queue up all the on-pixels of blob.        
-        
-        ## same-row
-        ## same-row same-col pixel is already counted so turn it off
-        img( rpos, cpos ) = 0;
-        if ( cpos + 1 <= icols )
-              if ( img( rpos , cpos + 1) > 0 )
-                 img( rpos, cpos + 1 ) = 0;
-                 newpixel = [ rpos ; cpos + 1 ];
-                 q = [q, newpixel];
-              end                
-        end
-        if ( cpos - 1 >= 1 )
-              if ( img( rpos , cpos - 1) > 0 )
-                  img( rpos, cpos - 1 ) = 0;
-                  newpixel = [ rpos ; cpos - 1 ];
-                  q = [q, newpixel];
-              end
-        end
-
-        ## next-row
-        if( rpos + 1 <= irows )
-            if ( img( rpos + 1, cpos ) > 0 )
-                img( rpos + 1, cpos ) = 0;
-                newpixel = [ rpos + 1; cpos];
-                q = [q, newpixel];
-            end
-            if ( cpos + 1 <= icols )
-                if ( img( rpos + 1, cpos + 1) > 0 )
-                    img( rpos + 1, cpos + 1 ) = 0;
-                    newpixel = [ rpos + 1; cpos + 1 ];
-                    q = [q, newpixel];
-                end                
-            end
-            if ( cpos - 1 >= 1 )
-                if ( img( rpos + 1, cpos - 1) > 0 )
-                    img( rpos + 1, cpos - 1 ) = 0;
-                    newpixel = [ rpos + 1; cpos - 1 ];
-                    q = [q, newpixel];
-                end
-            end
-        end
-        
-        ## prev-row
-        if( rpos - 1 >= 1 )
-            if ( img( rpos - 1, cpos ) > 0 )
-                img( rpos - 1, cpos ) = 0;
-                newpixel = [ rpos - 1; cpos];
-                q = [q, newpixel];
-            end
-            if ( cpos + 1 <= icols )
-                if ( img( rpos - 1, cpos + 1) > 0 )
-                    img( rpos - 1, cpos + 1 ) = 0;
-                    newpixel = [ rpos - 1; cpos + 1 ];
-                    q = [q, newpixel];
-                end                
-            end
-            if ( cpos - 1 >= 1 )
-                if ( img( rpos - 1, cpos - 1) > 0 )
-                    img( rpos - 1, cpos - 1 ) = 0;
-                    newpixel = [ rpos - 1; cpos - 1 ];
-                    q = [q, newpixel];
-                end
-            end
-        end                    
-    end
-
-    result.nblob = result.nblob + 1;
-    result.blobpos{result.nblob} = bpos;
-    result.blobarea(result.nblob) = size(bpos,2);
-  end
-
-  return
-end


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