Find and plot the center of a circle
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Laisa Fernochio
on 2 Jun 2018
Commented: Ameer Hamza
on 10 Jun 2018
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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Accepted Answer
Ameer Hamza
on 2 Jun 2018
You can display the center of circle using
viscircles(centers, radii,'EdgeColor','b');
plot(centers(1), centers(2), '+')
4 Comments
Ameer Hamza
on 10 Jun 2018
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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