[Octave-bug-tracker] [bug #52933] [octave-forge] (image) regionprops Perimeter returns Matlab incompatible results

[Avinoam Kalma]

Follow-up Comment #11, bug #52933 (project octave):

@Hartmut, 
your example from commnet#9 is very good.

In Matlab


ans =

   1.960000000000000


ans =

   2.812000000000000


ans =

7.013000000000000


in Octave


k = 1 even = 2 odd = 0 corners = 1
k = 2 even = 0 odd = 2 corners = 1
k = 3 even = 6 odd = 1 corners = 3
ans =  1.86900000000000
ans =  2.72100000000000
ans =  7.01300000000000


The diffrence in the perimeter of the first 2 blobs is 0.091, so it seems that
it both cases I count one corner more.
Since Matlab does not tell us how they count "even", "odd" & "corners", I am
using http://www.crisluengo.net/index.php/archives/310, which is similar to
Matlab implementation, but not the same.

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