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annotate scripts/image/gray2ind.m @ 1356:8b51c1738882

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[project @ 1995-09-05 20:08:49 by jwe] Initial revision
author jwe
date Tue, 05 Sep 1995 20:08:49 +0000
parents 611d403c7f3d
children 5d29638dd524
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1 # Copyright (C) 1995 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
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6 # under the terms of the GNU General Public License as published by the
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7 # Free Software Foundation; either version 2, or (at your option) any
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8 # later version.
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9 #
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10 # Octave is distributed in the hope that it will be useful, but WITHOUT
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11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 # 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 02111-1307, USA.
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18
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19 function [X, map] = gray2ind (I, n)
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20
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21 # Image format conversion
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22
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23 # Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994.
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24
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25 if (nargin < 1 || nargin > 2)
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26 usage ("gray2ind (I, n)");
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27 elseif (nargin == 1)
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28 n = 64;
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29 endif
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31 map = gray (n);
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33 X = round (I*(n-1)) + 1;
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34
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35 endfunction