[Octave-bug-tracker] [bug #45088] image package: rangefilt doesn't work on RGB images

[H. G.]

URL:
  <http://savannah.gnu.org/bugs/?45088>

                 Summary: image package: rangefilt doesn't work on RGB images
                 Project: GNU Octave
            Submitted by: hardy
            Submitted on: Di 12 Mai 2015 20:36:39 GMT
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0-rc4
        Operating System: Any

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Details:

Here is a little script to show the bevahior (image-2.4.0 on Octave
4.0.0-RC4):


pkg load image
I = ones(10,10,3);
J = rangefilt(I);


Even after fixing bug #45087 this still does NOT work, and produces an error
message. It seems to me that the Octave implementation of rangefilt.m does not
currentely support rgb images.

This limitation is not mentioned in the help text of rangefilt.m and I think
Matlab works fine with rgb images.

Can someone improve rangefilt, or should we just add this limitation info to
its help text?




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