Using a for loop to put a number of 2D arrays in a directory into a single 3D array
6 views (last 30 days)
Show older comments
Hi,
I have a number of 2D arrays (image files) in a directory which I am trying to open sequentially in a for loop so I can window them down, and then put them all into a 3D array. I know this is a simple question, I' having trouble creating the 3D array while opening each 2D array in the for loop. So for instance If I have 3 arrays each 512 x 512 in a directory I just want to loop through all three files and make a 512 x 512 x 3 array.
for f_index = 1 :(total_files)
%get the name of the file
name_string = strcat(datapath,dirout(f_index + 2).name);
%read the data in
data_frame= read_image_raw(name_string,512,512);
%concatenate each frame with the last
results = cat(3,data_frame(:));
end
I realize this is a beginners question. Thanks.
0 Comments
Answers (2)
Arash Rabbani
on 12 Nov 2019
If your images are PNG and located in a folder, just run this code on that folder. 'A' is the resulted matrice:
D=dir('*.png');
Image_Size=[512,512];
A=zeros(Image_Size(1), Image_Size(2),numel(D));
for I=1:numel(D)
IMG=imread(D(I).name);
if ndims(IMG)>=3; IMG=rgb2gray(IMG); end
A(:,:,I)=IMG;
end
0 Comments
See Also
Categories
Find more on File Operations 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!