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How to have a contour with 4-connectivity?

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Dear all,
I have a contour that shown below. Two of the corners are with 8-connectivity. Is there a way to make all the corners satisfy 4-connectivity?

Accepted Answer

Meghana Dinesh
Meghana Dinesh on 26 Nov 2015
Edited: Meghana Dinesh on 26 Nov 2015
Fill the image ( imfill). Use bwboundaries with conn = 4.
  1 Comment
Meshooo on 27 Nov 2015
I was thinking if there is a direct way to restore those missing pixels. Thank you.

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