How to obtain an average polygon out of multiple polygon boundaries?

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Sudip Paudel 2020-7-13

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评论： Sudip Paudel 2020-7-14

采纳的回答： Image Analyst

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Hi, How do I obtain an average ROI from multiple ROIs drawn on different images? Thank you very much for your help.

Images=dir("*ExampleImage.tif");
S_Boundaries=[];
for i=1 :numel(Images)
    Image=imread(Images(i).name);
    imshow(Image); 
    p=drawpolygon();
    S_boundary{i}=p.Position
    S_Boundaries=[S_Boundaries; S_boundary{i}]
end
AverageBoundary = HelpFunction(S_Boundaries) 

%HelpFunction would compute an average boundary from multiple boundaries saved as S_Boundaries.

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Matt J 2020-7-14

Do you have a definition for "average boundary"?

Sudip Paudel 2020-7-14

Hi Matt, the average boundary meaning the one that represents the entire set of boundaries (I think a best fit boundary would work). Thank you.

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采纳的回答

Image Analyst 2020-7-14

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I already did this for someone else. Luckily I saved the code. It's attached.

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Image Analyst 2020-7-14

You can convert your polygons/boundaries into images with the poly2mask() function.

Sudip Paudel 2020-7-14

Oh OK, thank you very much.

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R2020a

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