Get the Centroid of a specific object in an image

Hi,

I have a binarized image with a circle as shown below, and I wish to get the centroid of the circle.

Can anyone please guide me how?

I have tried with using 'regionprops' with 'Centroid', however it does not provide me the centroid of the circle but the centroid of the whole image.

props = regionprops(binaryImage,'Centroid');
boundingBox = props.Centroid;

Also, I tried using 'BoundingBox' with 'regionprops' as well. But I am not sure whether the value given is location of the circle or the centroid of it.

props = regionprops(binaryImage,'BoundingBox');
boundingBox = props.BoundingBox;

Thank you if anyone would like to help me.

Answer 1

[KSSV]

I = imread("image.png") ; 
[y,x] = find(I==0) ; 
iwant = [mean(x) mean(y)] ; 
% check 
imshow(I) 
hold on
plot(iwant(1),iwant(2),'+r')

[WanYu]

Thank you for your reply. It works!