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Create multiple structure properties from a stack of 3D images

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Mario
Mario 2015-3-22
评论： Mario 2015-3-23
Hello,
I have a stack of binary images(16 to be exact) in a 3D matrix that I named M2 and I wanted to extract centroids from each of those images inside that 3D matrix using regionprops using for loop, but without any success.
I labeled each of those images and stored them in a new 3D matrix called bw. I want to extract centroids of many labels contained by each image of that 3D matrix and store them in maybe separate structures. But I am not sure how to do that and use them later in my code. I want to be able to get perhaps separate sub-structures containing centroids of each labeled image so that I can access those centroids later on in my code.
I have done this so far:
numImages - is a number of images inside my 3D matrix
bw - is a 3D matrix of my labeled images
M2 - is a 3D matrix of my binary images
for i=1:numImages
s = regionprops(logical(bw(:,:,i)), M2(:,:,i), 'Centroid');
end
Here I am not sure how to get centroids stored in separate structures for each image of my 3D matrix. Any help would be much appreciated.
Thanks in advance!

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Image Analyst
Image Analyst 2015-3-22
In the loop, put this
strCentroids(i).Centroids = [s.Centroid];
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Mario
Mario 2015-3-23
Thanks, that is working!
Now I have a 1x16 structure s containing all 16 labeled images with each of them having their regions centroids.

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