How to calculate the centroid / center of a patch?
7 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Maybe something like this?
[Xc,Yc] = centroid(patch('XData',X,'YData',Y))
2 Commenti
jessupj
il 1 Mar 2022
i have you tried polyshape instead of a patch? you're defining the patch there with x,y data, so you can use those data to define the right object to apply centroid to
Risposta accettata
Più risposte (2)
Constantino Carlos Reyes-Aldasoro
il 1 Mar 2022
The data X,Y must have been previously calculated from some raw data, say a thresholded figure, it is from that data you can easily calculate centroids with regionprops
Image Analyst
il 1 Mar 2022
Depends on what you have. If you have just arbitrary (x,y) data gotten somehow, like through assignment, then you can create a polyshape with the polyshape() function, and then use centroid(), like @David Hill showed.
If you have a binary image (like @Constantino Carlos Reyes-Aldasoro assumed -- say from thresholding), and want the centroid of each region, you can use regionprops():
props = regionprops(binaryImage, 'Centroid');
xyCentroids = vertcat(props.Centroid)
If you'd like a tutorial on image segmentation that shows that, you can see my Image Segmentation Tutorial:
Vedere anche
Categorie
Scopri di più su Microscopy in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!