3D Reconstruction from 2D Slices: Find Largest Connected

take largest connected components in 2D slices and then reconstruct the 3D by stacking them

banikr asked: 2022-03-07 binary masking ima...

Isolate and reconstruct 3D objects from 2D slices in MATLAB! Learn how to take the largest connected components in each slice and stack them for 3D reconstructi

Expert Answer

Prashant Kumar answered . 2025-07-14 13:49:35

erode image
dilate image

clc                         % clear command window
cla                         % clear axes
bi11 = bi;                  % create copy of 'bi'
bi1 = bi(:,:,170:end);      % get top part
R = 2;                      % radius of structuring element
[x,y,z] = meshgrid(-R:R);   % X Y Z 3d matrices
el = x.^2+y.^2+z.^2 <= R^2; % sphere of radius 'R'
bi2 = imerode(bi1, el);     % erode image
bi3 = imdilate(bi2, el);    % dilate image
bi11(:,:,170:end) = bi3;    % replace original top part

isosurface(bi11,.95)        % display 3d image
axis vis3d
light

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