determining the edges of the money image with red color

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betty 2022-1-1

评论： Image Analyst 2022-1-1

how can I draw the edges of the money image below in color? I'm trying the following code, but it doesn't work

A = imread('eight.tif');

figure,imshow(A)

d=imdistline;

[centers,radi] = imfindcircles(A,[20 25]);

figure,imshow(A);

viscircles(centers, radi,'Color','r');

Simon Chan 2022-1-1

编辑：Simon Chan 2022-1-1

It is better to ask imfindcircles to find all the dark circles and adjust the range of radius.

In your case, the range is too small and imfindcircles cannot find any circle for you.

Try the following

[centers, radi] = imfindcircles(A,[20 50],'ObjectPolarity','dark')

betty 2022-1-1

thank you very much I tried and it worked

Image Analyst 2022-1-1

Then please "Accept this answer" to award Simon his reputation points. 🙂

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