Mercurial > octave-antonio
view scripts/image/imread.m @ 16913:d0558ee259ad
Connect imread with imformats.
* private/core_imread.m: new function. Old code from imread() moved here just
like what happened to imfinfo(). See message on cset bfad37d33435
* imfinfo.m: reduced to minimum input check, until finding filename. Passes
all arguments to imageIO().
* imformats.m: change calls to imread() to the new core_imread().
author | Carnë Draug <carandraug@octave.org> |
---|---|
date | Sun, 07 Jul 2013 18:26:25 +0100 |
parents | e2de3c8882be |
children | 1b3b3ee88284 |
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## Copyright (C) 2008-2012 Thomas L. Scofield ## Copyright (C) 2008 Kristian Rumberg ## Copyright (C) 2006 Thomas Weber ## Copyright (C) 2005 Stefan van der Walt ## Copyright (C) 2002 Andy Adler ## ## 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 3 of the License, 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, see ## <http://www.gnu.org/licenses/>. ## Author: Thomas L. Scofield <scofield@calvin.edu> ## Author: Kristian Rumberg <kristianrumberg@gmail.com> ## Author: Thomas Weber <thomas.weber.mail@gmail.com> ## Author: Stefan van der Walt <stefan@sun.ac.za> ## Author: Andy Adler ## -*- texinfo -*- ## @deftypefn {Function File} {[@var{img}, @var{map}, @var{alpha}] =} imread (@var{filename}) ## Read images from various file formats. ## ## The size and numeric class of the output depends on the ## format of the image. A color image is returned as an ## @nospell{MxNx3} matrix. Gray-level and black-and-white images are ## of size @nospell{MxN}. ## The color depth of the image determines the numeric ## class of the output: "uint8" or "uint16" for gray ## and color, and "logical" for black and white. ## ## @seealso{imwrite, imfinfo} ## @end deftypefn function varargout = imread (filename, varargin) if (nargin < 1) print_usage (); elseif (! ischar (filename)) error ("imread: FILENAME must be a string"); endif varargout{1:nargout} = imageIO (@core_imread, "read", filename, filename, varargin{:}); endfunction %!testif HAVE_MAGICK %! vpng = [ ... %! 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, ... %! 0, 13, 73, 72, 68, 82, 0, 0, 0, 3, ... %! 0, 0, 0, 3, 8, 2, 0, 0, 0, 217, ... %! 74, 34, 232, 0, 0, 0, 1, 115, 82, 71, ... %! 66, 0, 174, 206, 28, 233, 0, 0, 0, 4, ... %! 103, 65, 77, 65, 0, 0, 177, 143, 11, 252, ... %! 97, 5, 0, 0, 0, 32, 99, 72, 82, 77, ... %! 0, 0, 122, 38, 0, 0, 128, 132, 0, 0, ... %! 250, 0, 0, 0, 128, 232, 0, 0, 117, 48, ... %! 0, 0, 234, 96, 0, 0, 58, 152, 0, 0, ... %! 23, 112, 156, 186, 81, 60, 0, 0, 0, 25, ... %! 73, 68, 65, 84, 24, 87, 99, 96, 96, 96, ... %! 248, 255, 255, 63, 144, 4, 81, 111, 101, 84, ... %! 16, 28, 160, 16, 0, 197, 214, 13, 34, 74, ... %! 117, 213, 17, 0, 0, 0, 0, 73, 69, 78, ... %! 68, 174, 66, 96, 130]; %! fid = fopen ("test.png", "wb"); %! fwrite (fid, vpng); %! fclose (fid); %! A = imread ("test.png"); %! delete ("test.png"); %! assert (A(:,:,1), uint8 ([0, 255, 0; 255, 237, 255; 0, 255, 0])); %! assert (A(:,:,2), uint8 ([0, 255, 0; 255, 28, 255; 0, 255, 0])); %! assert (A(:,:,3), uint8 ([0, 255, 0; 255, 36, 255; 0, 255, 0]));