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[Octave-bug-tracker] [bug #47879] image package: imerode and imdilate se
From: |
Carnë Draug |
Subject: |
[Octave-bug-tracker] [bug #47879] image package: imerode and imdilate sets elements to Inf when SE is zero |
Date: |
Mon, 9 May 2016 18:49:16 +0000 (UTC) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.7.1 |
Update of bug #47879 (project octave):
Summary: imerode Sets a bit to 1/Inf, when the center of the
strel is 0 => image package: imerode and imdilate sets elements to Inf when SE
is zero
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Follow-up Comment #1:
I originally asked the reporter to report it here since I thought it was a
bug. I'm not so sure anymore. The issue can be generalized by using a SE of
zero:
octave> imerode (zeros (3), 0)
ans =
Inf Inf Inf
Inf Inf Inf
Inf Inf Inf
While searching the web, I found a post on stackoverflow asking why this odd
result. I have compiled my thoughts on that answer here
http://stackoverflow.com/a/37117842/1609556
This seems to boil down about finding min of an empty set, or whether erosion
should compute min or infimum (same for imdilation). I would appreciate
comments on this but I'm currently leaning towards actually being the correct
answer (but I will be the first to admit to code it by accident).
_______________________________________________________
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<http://savannah.gnu.org/bugs/?47879>
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