Reconstructing components from regionprops

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Veena Chatti
Veena Chatti on 22 Aug 2020
Commented: Image Analyst on 25 Sep 2020
Hi!
I used the watershed in the Image Processing toolbox to detect certain objects, but I realize that it sometimes makes errors and mislabels one object as two, and sometimes two as one. I have a series of images, so it's easy to find instances where it didn't make this mistake for the same objects. And I found a way to identify where in the series it makes these mistakes.
Now I'd like to find a way to reconstruct these objects when they are mislabeled and am wondering how to go about this. I'd like to reconstruct all the properties- Area, Perimeter, CentroidX&Y, ConvexHull, ConvexImage, etc. I have some ideas for Area, Perimeter, and Centroid X&Y. However, I'm not sure how I'll reconstruct the ConvexHull and ConvexImage. Does anyone have any ideas how to approach this part of the problem?
Thanks for your suggestions!

Answers (1)

Image Analyst
Image Analyst on 22 Aug 2020
  8 Comments
Veena Chatti
Veena Chatti on 24 Sep 2020
I have also tried ConvexArea, but there's still intermixing (like in the attached scatter plots).
I'm also attaching a screenshot of the watershed itself with the errors circled- does anything else occur to you?
Image Analyst
Image Analyst on 25 Sep 2020
Correct. Again, you're not measuring enough things, or the correct things, to distinguish them and determine the ground truth class.

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