[Octave-bug-tracker] [bug #48794] image package: imreconstruct should clip marker > mask

[Hartmut]

URL:
  <http://savannah.gnu.org/bugs/?48794>

                 Summary: image package: imreconstruct should clip marker >
mask
                 Project: GNU Octave
            Submitted by: hardy
            Submitted on: Mon 15 Aug 2016 09:26:02 PM GMT
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

Here is a little example to show the behavior:

clear, close all
pkg load image

marker = true(3)
mask = logical([1 1 1; 1 0 1; 1 1 1])

im = imreconstruct(marker, mask)

This throws an error "imreconstruct: MARKER must be less or equal than MASK"
in the current image package (version 2.4.1 and image dev version).

According to the Matlab help in
http://de.mathworks.com/help/images/ref/imreconstruct.html the imreconstruct
should instead clip the values where marker > mask to the corresponding mask
value.




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