Get the Centroid of a specific object in an image

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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.

Accepted Answer

KSSV
KSSV on 4 Mar 2020
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')

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