|
2303
|
1 ### Copyright (C) 1996 John W. Eaton |
|
|
2 ### |
|
|
3 ### This file is part of Octave. |
|
|
4 ### |
|
|
5 ### Octave is free software; you can redistribute it and/or modify it |
|
|
6 ### under the terms of the GNU General Public License as published by |
|
|
7 ### the Free Software Foundation; either version 2, or (at your option) |
|
|
8 ### any later version. |
|
|
9 ### |
|
|
10 ### Octave is distributed in the hope that it will be useful, but |
|
|
11 ### WITHOUT ANY WARRANTY; without even the implied warranty of |
|
|
12 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
|
13 ### General Public License for more details. |
|
|
14 ### |
|
|
15 ### You should have received a copy of the GNU General Public License |
|
|
16 ### along with Octave; see the file COPYING. If not, write to the Free |
|
|
17 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
|
|
18 ### 02111-1307, USA. |
|
559
|
19 |
|
2311
|
20 ## Image format conversion |
|
1024
|
21 |
|
2312
|
22 ## Author: Tony Richardson <amr@mpl.ucsd.edu> |
|
|
23 ## Created: July 1994 |
|
|
24 ## Adapted-By: jwe |
|
1024
|
25 |
|
2312
|
26 function [X, map] = gray2ind (I, n) |
|
1024
|
27 |
|
|
28 if (nargin < 1 || nargin > 2) |
|
|
29 usage ("gray2ind (I, n)"); |
|
|
30 elseif (nargin == 1) |
|
559
|
31 n = 64; |
|
|
32 endif |
|
|
33 |
|
1024
|
34 map = gray (n); |
|
559
|
35 |
|
1024
|
36 X = round (I*(n-1)) + 1; |
|
559
|
37 |
|
|
38 endfunction |
