[Octave-bug-tracker] [bug #50151] image package: normxcorr2 is not compatible with Matlab

[Avinoam Kalma]

URL:
  <http://savannah.gnu.org/bugs/?50151>

                 Summary: image package: normxcorr2 is not compatible with
Matlab
                 Project: GNU Octave
            Submitted by: avinoam
            Submitted on: Thu 26 Jan 2017 04:45:59 AM GMT
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Avinoam
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: other
        Operating System: Any

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Details:


For example, use the following script (check_norm.m):


s = [-1 0 0 1 1 1 0 -1 -1 0 1 0 0 -1];
t = [1 1 0];
x = normxcorr2(t,s)


Running in Matlab:


>> check_norm

x =

  Columns 1 through 8

         0   -1.0000   -0.5000   -1.0000   -0.5000         0    1.0000   
0.8660

  Columns 9 through 16

    0.5000   -1.0000   -0.8660    0.5000    0.5000    1.0000    0.5000        
0


Running in Octave:


>> check_norm
x =

Columns 1 through 11:

   1.00000  -0.50000  -0.50000  -1.00000  -0.50000   0.00000   1.00000  
0.86603   0.50000  -1.00000  -0.86603

Columns 12 through 16:

   0.50000   0.50000   1.00000  -0.50000  -0.50000


The two first entries and the two last entries are different.





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