[Octave-bug-tracker] [bug #45333] image package: grayhresh fails if input doesn't have different values

[Carnë Draug]

URL:
  <http://savannah.gnu.org/bugs/?45333>

                 Summary: image package: grayhresh fails if input doesn't have
different values
                 Project: GNU Octave
            Submitted by: carandraug
            Submitted on: Tue 16 Jun 2015 18:10:56 GMT
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: None
             Assigned to: carandraug
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

Example:


octave> a = repmat (0.5, 100, 100);
octave> graythresh (a)
ans = [](1x0)


For Matlab compatibility, such corner case should return a value of zero.




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