home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Geek Gadgets 1
/
ADE-1.bin
/
ade-dist
/
octave-1.1.1p1-src.tgz
/
tar.out
/
fsf
/
octave
/
scripts
/
image
/
gray2ind.m
< prev
next >
Wrap
Text File
|
1996-09-28
|
1KB
|
36 lines
# Copyright (C) 1995 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, 675 Mass Ave, Cambridge, MA 02139, USA.
function [X, map] = gray2ind (I, n)
# Image format conversion
# Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994.
if (nargin < 1 || nargin > 2)
usage ("gray2ind (I, n)");
elseif (nargin == 1)
n = 64;
endif
map = gray (n);
X = round (I*(n-1)) + 1;
endfunction