Find and plot the center of a circle

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Laisa Fernochio
Laisa Fernochio 2018-6-2
评论： Ameer Hamza 2018-6-10
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');

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Ameer Hamza
Ameer Hamza 2018-6-2
You can display the center of circle using
viscircles(centers, radii,'EdgeColor','b');
plot(centers(1), centers(2), '+')
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Laisa Fernochio
Laisa Fernochio 2018-6-9
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
Ameer Hamza 2018-6-10
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.

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