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%% Smooth MRI volume with 3-D Gaussian filter % %% % Load MRI data and display it. % Copyright 2015 The MathWorks, Inc. vol = load('mri'); figure montage(vol.D) title('Original image volume') %% % Smooth the image with a 3-D Gaussian filter. siz = vol.siz; vol = squeeze(vol.D); sigma = 2; volSmooth = imgaussfilt3(vol, sigma); figure montage(reshape(volSmooth,siz(1),siz(2),1,siz(3))) title('Gaussian filtered image volume')