Unable to perform assignment because the size of the left side is 625-by-1 and the size of the right side is 1875-by-1

circle_folder = 'C:\Users\MyPC\Documents\CR\start\circle'; 
name_circle = dir(fullfile(circle_folder, '*.png')); 
total_circle = numel(name_circle); 
rez_circle = [25 25]; 
m_circle = zeros(25*25, 5);
for n_circle = 1:total_circle 
    full_circle = fullfile(circle_folder, name_circle(n_circle).name); 
    images_circle = imread(full_circle); 
    images_circle = imresize(images_circle, rez_circle); 
    store_circle = imbinarize(images_circle);
    store_circle = store_circle(:);
    m_circle(:, n_circle) = store_circle;
    figure(n_circle); 
    imshow(m_circle);
end

I'm trying to pull images from the folder in question, resize them to 25 by 25 pixels, then turn them into a binary matrix. The code works until the point i attempt to fit the images into said matrix. If I make the matrix bigger, so it becomes 1875-by-1, it works, however, I do need the matrix to be of this size.

Answer 1

[KSSV]

Better save them into an cell array.

circle_folder = 'C:\Users\MyPC\Documents\CR\start\circle'; 
name_circle = dir(fullfile(circle_folder, '*.png')); 
total_circle = numel(name_circle); 
rez_circle = [25 25]; 
m_circle = cell(total_circle,1);
for n_circle = 1:total_circle 
    full_circle = fullfile(circle_folder, name_circle(n_circle).name); 
    images_circle = imread(full_circle); 
    images_circle = imresize(images_circle, rez_circle); 
    store_circle = imbinarize(images_circle);
    store_circle = store_circle(:);
    m_circle{n_circle} = store_circle;
    figure(n_circle); 
    imshow(m_circle{n_circle});  %
end

Answer 2

[Walter Roberson]

One or more of your images are rgb. 25*25*3 = 1875