How to extract 40 points from each slice in binary image ?

Hello,

I have a small question. I have 3D binary image. I would like to extract 40 points/voxels from each slices. Is it possible in matlab ? Maybe someone has any idea ? I would be appreciate for any help please.

Answer 1

[Azzi Abdelmalek]

You didn't specify what 40 points?

A=rand(10,10,10)>0.5  % Example
n=size(A,3)
out=arrayfun(@(x) A(1:4,1:10,x),1:n,'un',0)

[agatte]

I need to extract 40 voxels from contour of binary image. From each slice 40 contour voxels ?