How to Pick random edges in an image and draw a line.

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Navya Snigdha Thumma 2015-10-3

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https://ww2.mathworks.cn/matlabcentral/answers/246632-how-to-pick-random-edges-in-an-image-and-draw-a-line

Hello all. I am trying to pick two random edges in a binary image and draw a line connecting the two edges.My question is how can I randomly pick any two edges in a binary image. Also, after picking the two random edges I want to join them with line using slope intercept form y=mx+c. Hope you can help me. Thanks.