Find and plot the center of a circle

I have a code that makes a circle around the iris in a eye image, and now i need to show the center of this circle how do i do that?

    % code
  r = bboxeyeshalf(1,4)/4;
             [centers, radii, metric] = imfindcircles(eyesImage, [floor(r-r/4) floor(r+r/2)], 'ObjectPolarity','dark', 'Sensitivity', 0.93); % Hough Transform
             [M,I] = sort(radii, 'descend');
             eyesPositions = centers;
             subplot(2,2,2),imshow(eyesImage); hold on;
             viscircles(centers, radii,'EdgeColor','b');

Answer 1

[Ameer Hamza]

You can display the center of circle using

viscircles(centers, radii,'EdgeColor','b');
plot(centers(1), centers(2), '+')

[Laisa Fernochio]

thank you

[Ameer Hamza]

You are welcome.

[Laisa Fernochio]

Can you help me with the mouse move , I wanna take that coordinates of center and make the mouse move, how do i do that? I know i little of java robot,but i don't know where to start

[Ameer Hamza]

Here is a general idea. You can use Position property of figure and axes objects along with XLim and YLim to find the screen coordinates of the desired point. Then you can use java robot to move to that location.