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Re: how to read images-files
From: |
Etienne Grossmann |
Subject: |
Re: how to read images-files |
Date: |
Mon, 18 Feb 2002 17:50:48 +0000 |
User-agent: |
Mutt/1.2.5i |
Hello,
Ariel Tankus (http://www.math.tau.ac.il/~arielt/misc.html) wrote some
image i/o functions, amongst which the following :
======================================================================
octave:20> help readimagefile
readimagefile is the user-defined function from the file
/home/etienne/prog/octave/mylib/octave-mylib/tools/imgio/readimagefile.m
[im, isPpm, maxval] = readimagefile(fname, force_gray)
fname : string : name of image file.
force_gray : flag : (opt) if true, the returned image is a gray level
image, even if the file contained a color image.
(default: false)
im : matrix : an image. Note, that if force_gray == false, the
image might by a PPM representation of the image.
isPpm : flag : 1 : `im' is in PPM format.
0 : `im' is a graylevel matrix.
maxval : int : Maximum luminosity level (usually 255)
See also: readpnm, readfi, readjpg, readgif, splitppm.
readimagefile Read an image file of any supported image format.
The currently supported formats are:
PGM/PPM (both ascii and binary), FI, JFIF, IMG and GIF.
======================================================================
I added some ugly wrapping and put it on my homepage
(http://anonimo.local/~etienne/octave).
Cheers,
Etienne
On Mon, Feb 18, 2002 at 07:16:30PM +0900, Edgar Martinez wrote:
# hello,
#
# I am using octave under linux(kondara).
# does somebody know how to load any kind of image in *.m programs?
# mainly jpg, ps, gif, or ppm, even any other is ok!
#
# the way how to save them doesnt care, because i can be saved in octave
# format.
# (in the future it will easier to read)
#
# I want to manipulate images into simple 2D arrays.
#
# if some body has any suggestion, thanks in advance
#
# EddY
#
#
#
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#
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--
Etienne Grossmann ------ http://www.isr.ist.utl.pt/~etienne
-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
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