Draw normal to edge detection image

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developer
developer 2011-5-23
评论： Mehri Mehrnia 2022-6-27
Hello,
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 .

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回答（1 个）

Wolfgang Schwanghart
You can compute surface normals using the function surfnorm. Then, you can use quiver to draw the vectors.
HTH, W.
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Mehri Mehrnia
Mehri Mehrnia 2022-6-27
but surfnorm is for 3D , how to use it for the edges of the 2D shape?

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