How to resize a 3D matrix?
12 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Sandhiya Prakash
le 14 Mar 2017
Commenté : SojM
le 17 Juil 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 commentaires
Réponse acceptée
Walter Roberson
le 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 commentaires
Walter Roberson
le 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
le 17 Juil 2020
After the resize of the matrix, how to save new 3D matrix as stack of 2D images?
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Resizing and Reshaping Matrices dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!