Resizing a 3D image without using imresize3
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I do not have the image processing toolbox on my MatLab 2016b so I cannot use the imresize3() function. Is there other ways to resize an image of (x,y,z) to (a,b,c)?
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Risposte (4)
Walter Roberson
il 23 Set 2017
ifftn( fftn(YourImage), [a, b, c] )
1 Commento
Bogdan Dzyubak
il 28 Dic 2017
Modificato: Bogdan Dzyubak
il 28 Dic 2017
Transforming the image this way forward and back produces tons of ringing. There's also a warping artifact (perhaps fftshift is needed). With imresize, the forward and back transform gives a blurrier original image which is more desirable.
Ahmadi Anis
il 8 Apr 2020
I have an MRI image with this size (140,192,192), so this script will insert my image in the center of an output matrix with this size (X,Y,Z) by adding zero
this script works ;)
clear;
clc;
matrice= niftiread('C:\Users\anis8\Desktop\1.nii');
X=256;
Y=256;
Z=256;
matrice=[zeros(floor(X-size(matrice,1))/2,size(matrice,2),size(matrice,3));...
matrice;...
zeros(floor(X-size(matrice,1))/2,size(matrice,2),size(matrice,3))];%%reglage de x
matrice=[zeros(X,floor(Y-size(matrice,2))/2,size(matrice,3)),...
matrice...
,zeros(X,floor(Y-size(matrice,2))/2,size(matrice,3))];%%reglage de y
matrice=cat(3,zeros(X,Y,floor(Z-size(matrice,3))/2),...
matrice...
,zeros(X,Y,floor(Z-size(matrice,3))/2));%%reglage de z
1 Commento
Radhika Gupta
il 24 Apr 2022
Modificato: Radhika Gupta
il 24 Apr 2022
Hey!
is there any way to resize .nii file and save in same format istead of a matrix?
Shivam
il 29 Lug 2022
You can use "for" loop for each 2D image, and than use imresize():
Im=zeros(N,N,N);
I=zeros(n,n,n);
for i=1:N
I(:,:,i)=imresize(squeeze(Im(:,:,i)),[n n]);
end;
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