Circle centers plot aren't in the same place as the circles in a figure

Hello All,

I have a code that detects circles in an image of cells and then draws the circles around the cells, i am trying to plot the centers of the circles as Xs but they are being plotted in the left most side of the figure, any idea how can i shift them to be in the right location?

I = imread ( 'globules3.jpg');

BW = im2bw(I,.8);

BW=~BW;

[centers, radii, metric] = imfindcircles(BW,[15 30]);

centersStrong = centers(1:40,:);

radiiStrong = radii(1:40);

metricStrong = metric(1:40);

figure, imshow(I), hold on

viscircles(centersStrong, radiiStrong,'EdgeColor','b');

plot(centersStrong,'r*', 'MarkerSize', 4, 'LineWidth', 2);

Answer 1

[Star Strider]

I cannot run your code.

However, since ‘centersStrong’ is a two-column matrix of the x and y coordinates, your plot call would need to separate them:

plot(centersStrong(:,1), centersStrong(:,2), 'r*', 'MarkerSize', 4, 'LineWidth', 2);

Since plot coordinates are different from image coordinates, you may also need to use:

set(gca, 'YDir','reverse')

As I mentioned, I cannot run your code, so I cannot experiment with this. I leave tht to you.

[Nadir Shakhshir]

It worked with:

plot(centersStrong(:,1), centersStrong(:,2), 'r*', 'MarkerSize', 4, 'LineWidth', 2);

Thank you so much!

[Star Strider]

As always, my pleasure!