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Finding maximum axial slice location from 3D binary label

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banikr on 17 Apr 2020
Commented: darova on 17 Apr 2020
I want to find the maximum axial slice location/number/position of a 3D binary mask.
which means the slice location where the binary mask ends.
banikr on 17 Apr 2020
could you describe or specify how to use min max in this case?
The data size is 172, 220, 156.
I can write a for loop and including sum() option. But I wonder if there are simple matlab code for that.

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Answers (1)

darova on 17 Apr 2020
  • Use find to find all values
  • Use ind2sub to convert indices to i,j,k (x,y,z)
ix = find(V(:)); % find nonzero values
[i1,i2,i3] = ind2sub(size(V),ix); % convert to i,j,k
[~,imax1] = max(i1); % max i
[~,imax2] = max(i2); % max j
[~,imax3] = max(i3); % max k

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