Draw normal to edge detection image

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developer on 23 May 2011
Commented: Mehri Mehrnia on 27 Jun 2022
I have an image that is the resulting image after detecting an edges, now i have to draw normal vector to the surfaces of the image .

Answers (1)

Wolfgang Schwanghart
Wolfgang Schwanghart on 23 May 2011
You can compute surface normals using the function surfnorm. Then, you can use quiver to draw the vectors.
  1 Comment
Mehri Mehrnia
Mehri Mehrnia on 27 Jun 2022
but surfnorm is for 3D , how to use it for the edges of the 2D shape?

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