[Octave-bug-tracker] [bug #56141] [octave forge] (image) bwmorph option 'endpoints' not implemented

[Nicholas Jankowski]

Follow-up Comment #15, bug #56141 (project octave):

I spent a little time looking at any other algorithms, and haven't found many.
One thing a number of people on stackexchange pointed to was called the 'hit
and miss' algorithm. Even after reading about it I don't get the meaning of
the name, but the description is at:

http://homepages.inf.ed.ac.uk/rbf/HIPR2/hitmiss.htm

according to them, endpoints of a skeleton (1 pixel wide) image is
accomplished by applying all four rotations of the :


X X X
0 1 0
0 0 0 
 

stencil (X indicates you don't care what that cell is, any combination of 1s
and 0s will pass)

This makes perfect sense, and I could code up a quick function to generate a
LUT, but it should give a zero for the first example in Comment #7 and the
second example in Comment #11.


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