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annotate scripts/image/ntsc2rgb.m @ 2303:5cffc4b8de57

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[project @ 1996-06-24 09:15:24 by jwe]
author jwe
date Mon, 24 Jun 1996 09:15:24 +0000
parents 5d29638dd524
children 2b5788792cad
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1 ### Copyright (C) 1996 John W. Eaton
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2 ###
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3 ### This file is part of Octave.
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4 ###
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5 ### Octave is free software; you can redistribute it and/or modify it
5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe]
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6 ### under the terms of the GNU General Public License as published by
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7 ### the Free Software Foundation; either version 2, or (at your option)
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8 ### any later version.
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9 ###
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10 ### Octave is distributed in the hope that it will be useful, but
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11 ### WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ### General Public License for more details.
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14 ###
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15 ### You should have received a copy of the GNU General Public License
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16 ### along with Octave; see the file COPYING. If not, write to the Free
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17 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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18 ### 02111-1307, USA.
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19
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20 function rgb = ntsc2rgb (yiq)
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21
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22 ## Image format conversion.
1024
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23
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24 ## Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994.
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25
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26 if (nargin != 1)
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27 usage ("ntsc2rgb (yiq)");
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28 endif
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29
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30 trans = [ 1.0, 1.0, 1.0;
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31 0.95617, -0.27269, -1.10374;
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32 0.62143, -0.64681, 1.70062 ];
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33
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34 rgb = yiq * trans;
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35
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36 endfunction