[Octave-bug-tracker] [bug #42474] saving jpg images with imwrite changes image

[Ian Journeaux]

URL:
  <http://savannah.gnu.org/bugs/?42474>

                 Summary: saving jpg images with imwrite changes image
                 Project: GNU Octave
            Submitted by: ijourneaux
            Submitted on: Sat 31 May 2014 04:12:34 PM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: ijourneaiux
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: Microsoft Windows

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Details:

Saving to jpg format is incorrect. here is a quick way to reproduce the
error.

a = repmat (uint8 (0:255), 100, 1); 
imwrite (a, "test.jpg"); 
imwrite (a, "test.fif");

The jpg image is incorrect while the tif image is correct.

I should have reported this some time ago.




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