How to resize a 3D matrix?
12 views (last 30 days)
Show older comments
Sandhiya Prakash
on 14 Mar 2017
Commented: SojM
on 17 Jul 2020
Hi, I want to reduce the size of a 3D image by averaging the values in 3D. For example if the image is 160*216*176. I wrote the code below to process the image to average the values in every 4*4*4 cube thereby creating a new matrix that is 40*54*44 in size.my code is below
X(1:40)=4;
Y(1:54)=4;
Z(1:44)=4;
A=mat2cell(imagestack_1,[X],[Y],[Z]);
average=cellfun(@mean2,A);
But this shows an error
Error using mat2cell (line 97)
Input arguments, D1 through D3, must sum to each dimension of the input matrix size, [160 216 176].'
Anyone who knows Please guide me!!
3 Comments
Accepted Answer
Walter Roberson
on 14 Mar 2017
You probably had previous values in your X, Y, or Z, making them longer than what would be created with just the above code.
6 Comments
Walter Roberson
on 14 Mar 2017
The boundary points do not have 27 neighbors. You should either calculate only on the interior, or you should define what you want the boundary calculation to be.
SojM
on 17 Jul 2020
After the resize of the matrix, how to save new 3D matrix as stack of 2D images?
More Answers (0)
See Also
Categories
Find more on Resizing and Reshaping Matrices in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!