Join curves of an image, identify which curves have to be joined

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Muskan Agrawal 2020-8-5

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https://ww2.mathworks.cn/matlabcentral/answers/575698-join-curves-of-an-image-identify-which-curves-have-to-be-joined

评论： Muskan Agrawal 2020-8-6

There is an image of say the surface of a metal. So, it has a lot of curves on it. There are also some discontinuous curves. So, I a supposed to join such curves.

I have been working on this and also came up with a solution in which I have to manually select two curves that are supposed to be joined. Then those curves are joined.

Since, there are many such discontinuous curves to be joined, I want to automotise it. Specifically, I don't want to manually select curves. Is there any way to proceed.

I have attached an image below to give a gist. Red circles shows the curves I want to join. Blue circles shows that they are joined. But my problem is that each time the user has t select the two curves that are supposed to be joined. Please do help.

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Answer 1

Image Analyst 2020-8-5

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https://ww2.mathworks.cn/matlabcentral/answers/575698-join-curves-of-an-image-identify-which-curves-have-to-be-joined#answer_475672

I'm attaching two edge linking demos. Adapt as needed - sorry I can't do that for you (not enough time).

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Image Analyst 2020-8-6

They basically find endpoints, then if a pair of endpoints are closer together than a specified distance, it connects those endpoints with a line. Isn't that what you want to do?

Muskan Agrawal 2020-8-6

connecting_curves_manuallySelecting_forOneCurve.m

Yeah! I tried doing but its not fulfilling the result which I want. Actually not all curves are supposed to be joined. Also the curves in the above image are so close, it isn't working out the way I want.

Pls try the code which I am attaching. May be I ll be able to make myself clearer, what kind of result I want.

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