How to compute centroidal distances
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Elysi Cochin
le 3 Jan 2018
Réponse apportée : Image Analyst
le 6 Jan 2018
I wanted to compute centroidal distances, by calculating the distance is between the geometric centroid of the segmented object and the brightness centroid of the same.
% Is geometric centroid same as
s = regionprops(BW,'centroid');
what is brightness centroid
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Image Analyst
le 6 Jan 2018
You can use regionprops() and sqrt(), like this untested code:
props = regionprops(binaryImage, grayImage, 'Centroid', 'WeightedCentroid');
% Extract centroids into x and y from structure.
centroids = [props.Centroid];
xCentroids = centroids(1:2:end);
yCentroids = centroids(2:2:end);
weightedCentroids = [props.WeightedCentroid];
xWeightedCentroids = weightedCentroids(1:2:end);
yWeightedCentroids = weightedCentroids(2:2:end);
% Compute distances between the centroids and the weighted centroids.
distances = sqrt((xCentroids - xWeightedCentroids) .^2 + (yCentroids - yWeightedCentroids) .^ 2);
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