How to use voronoi in specific area and determine the co-ordinate in each area?

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AniCnx 2017-12-19

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评论： AniCnx 2017-12-20

Hi all, I have task of using voronoi diagram. The task is segment area on image 512x512 and determine co-ordinate of the pixels in each area. How is possibly done on matlab function? Thank you.

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Answer 1

Image Analyst 2017-12-19

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https://ww2.mathworks.cn/matlabcentral/answers/373633-how-to-use-voronoi-in-specific-area-and-determine-the-co-ordinate-in-each-area#answer_297010

在 MATLAB Online 中打开

You can use

[vx,vy] = voronoi(...) % returns the finite vertices of the Voronoi edges in vx and vy.

Then create a mask from the cells

mask = poly2mask(......

Do it one cell at a time. Then use find() to get the coordinates for that cell:

[rows, columns] = find(mask);

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AniCnx 2017-12-20

Thank you very much for your suggestion, Image analyst. in case of voronoi, do matlab have line based voronoi? if not, how to apply point based of matlab to line based?

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