Resizing a 3D image without using imresize3
显示 更早的评论
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)?
回答（4 个）
This FEX file is a generalization of imresize to any array dimension, and doesn't use any toolboxes.
However, it only handles grayscale images, and doesn't do any anti-aliasing. All new values are based purely on interpolation.
Walter Roberson
2017-9-23
ifftn( fftn(YourImage), [a, b, c] )
1 个评论
Bogdan Dzyubak
2017-12-28
编辑：Bogdan Dzyubak
2017-12-28
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
2020-4-8
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 个评论
Radhika Gupta
2022-4-24
编辑：Radhika Gupta
2022-4-24
Hey!
is there any way to resize .nii file and save in same format istead of a matrix?
Shivam
2022-7-29
0 个投票
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;
类别
在 帮助中心 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息
2017-9-23
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
