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[Octave-bug-tracker] [bug #38464] image: regionprops misses some pixels?


From: Andreas Weber
Subject: [Octave-bug-tracker] [bug #38464] image: regionprops misses some pixels?
Date: Sat, 02 Nov 2013 17:02:55 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130917 Firefox/17.0 Iceweasel/17.0.9

Follow-up Comment #4, bug #38464 (project octave):

The script in the "original submission" shows an image and plots which are
bsed on data in bwlabel_miss.mat.

"lblNodes" in bwlabel_miss.mat shows no error and
"data" is missing. If I create nodes with a current regionprops from hg
sources it includes all regions.

Please mention that there is an error in your script:
When generating

data     = regionprops (lblNodes, "Centroid");
nodes    = zeros (length (data), 2);
for i=1:length (data)
      nodes(i, [2 1]) = data(i).Centroid;
end


and plotting nodes with

plot(nodes(:,1),nodes(:,2),"om")


x and y is swapped. I I use your original script and change x/y:

plot(nodes(:,2),nodes(:,1),"om")


all regions are shown.

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?38464>

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  http://savannah.gnu.org/




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