[Octave-bug-tracker] [bug #33614] Gifs won't return colormap error with imread

[Andrew Dougherty]

URL:
  <http://savannah.gnu.org/bugs/?33614>

                 Summary: Gifs won't return colormap error with imread
                 Project: GNU Octave
            Submitted by: adougher
            Submitted on: Tue 21 Jun 2011 07:23:59 PM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Andrew Dougherty
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.4.0
        Operating System: Microsoft Windows

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Details:

in Cygwin 1.7.9 (a recent fresh install including Octave-3.4.0 and
GraphicMagick-1.3.12)

Using the attached file, or any other gif in a call to imread of the form:

#verbatim#
[M map]=imread('Muybridge_race_horse_animated.gif','frames','all');


in Octave results in the following error message:

#verbatim#
error: imread: invalid image file: __magick_read__: unsupported indexed image
type
error: called from:
error:   /usr/share/octave/3.4.0/m/image/imread.m at line 74, column 7


No such problem occurs in MATLAB, and the 256 X 3 colormap is returned. 




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