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Canny edge detector from skimage, also as my own version, leaves double edges. How to implement this detector, leaving only inner or outer edges? Here are some samples of edges map.Temporary

enter image description here

Eugene Kartashev
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    You are attempting to detect a line using an edge detector. See [here](https://stackoverflow.com/a/50359884/7328782) for the difference between edges and lines, and see [here](https://stackoverflow.com/a/51414532/7328782) for the effect of a basic edge or line detector applied to a line. – Cris Luengo Aug 23 '20 at 13:58
  • @ YvesDaoust The thing is I want edges to be 1 pixel wide. I'm trying to implement General Hough Transform, where I need a temporary, which should be 1 pixel wide. – Eugene Kartashev Aug 23 '20 at 14:05
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    Use morphological thinning, or the inside contour or the outside contour. Anything but not Canny ! –  Aug 23 '20 at 15:13

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