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ntsc2rgb.m
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1996-07-11
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## Copyright (C) 1996 John W. Eaton
##
## This file is part of Octave.
##
## Octave 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, or (at your option)
## any later version.
##
## Octave 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 Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
## 02111-1307, USA.
## Image format conversion.
## Author: Tony Richardson <amr@mpl.ucsd.edu>
## Created: July 1994
## Adapted-By: jwe
function rgb = ntsc2rgb (yiq)
if (nargin != 1)
usage ("ntsc2rgb (yiq)");
endif
trans = [ 1.0, 1.0, 1.0;
0.95617, -0.27269, -1.10374;
0.62143, -0.64681, 1.70062 ];
rgb = yiq * trans;
endfunction