/
saveppm.m
51 lines (44 loc) · 1.33 KB
/
saveppm.m
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%SAVEPPM Write a PPM format file
%
% SAVEPPM(filename, r, g, b)
% SAVEPPM(filename, rgb)
%
% Saves the specified red, green and blue planes in a binary (P6)
% format PPM image file.
%
% SEE ALSO: loadppm
% 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/>.
function saveppm(fname, R, G, B)
if nargin == 2,
z = R;
R = z(:,:,1);
G = z(:,:,2);
B = z(:,:,3);
end
[r,c] = size(R);
fid = fopen(fname, 'w');
fprintf(fid, 'P6\n');
fprintf(fid, '%d %d\n', c, r);
fprintf(fid, '255\n');
R = R';
G = G';
B = B';
im = [R(:)'; G(:)'; B(:)'];
%im = reshape(c,r); %commented - usage wrong needs 3 elements ...sunil
fwrite(fid, im, 'uchar');
fclose(fid);