

% Copyright (C) 1993-2011, by Peter I. Corke
%
% This file is part of The Machine Vision Toolbox for Matlab (MVTB).
% 
% MVTB is free software: you can redistribute it and/or modify
% it under the terms of the GNU Lesser General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
% 
% MVTB 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 Lesser General Public License for more details.
% 
% You should have received a copy of the GNU Leser General Public License
% along with MVTB.  If not, see <http://www.gnu.org/licenses/>.
im = mksq(64, 1);
%im = zeros(64,64);
%im(32,:) = 1;
f1
idisp(im)
disp('create a square')
pause

f2
edge = icanny(im);
%edge = zeros(64,64);
%edge(32,:) = 1;
idisp(edge);
disp('take Laplacian to get 4 line segments')
pause

f3
h = Hough(edge)
disp('now show the Hough accumulator in which 4 peaks can be seen')
h.show()

f2
h.plot(4,'g')
h.peaks(4)
f1
h.plot(4,'g')
