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    %% Label Components Using 4-connected Objects
% 
%% 
% Create a small binary image.

% Copyright 2015 The MathWorks, Inc.

BW = logical ([1     1     1     0     0     0     0     0
               1     1     1     0     1     1     0     0
               1     1     1     0     1     1     0     0
               1     1     1     0     0     0     1     0
               1     1     1     0     0     0     1     0
               1     1     1     0     0     0     1     0
               1     1     1     0     0     1     1     0
               1     1     1     0     0     0     0     0]);
%%
% Create the label matrix using 4-connected objects.
L = bwlabel(BW,4)
%%
% Use the |find| command to get the row and column coordinates of the
% object labeled "2".
[r, c] = find(L==2);
rc = [r c]