How to store multi images like a tensor?

Hi everybody,

I have 50 images, each with size m * n. I want to store it as a tensor. has dimensions (m * n) x 50. Like a video.

please help me.

Answer 1

[Rahul]

Hi @PaulLe,

To store multiple images as a tensor, you can either create a cell array and use the 'cat' function to concatenate the image matrices to the cell array. This is also mentioned in this Answer: https://www.mathworks.com/matlabcentral/answers/473924-creating-a-tensor-from-multiple-matrices

Another approach which can be considered is pre-defining a 3D array to store the image matrices. Here is an example:

num_images = 50;
image_tensor = zeros(m, n, num_images); % Defining 'image_tensor' as a 3D array

for i = 1:num_images:
    img = imread(imagePath); % Here the 'imagePath' should be updated as required
    image_tensor(:, :, i) = img;
end

Refer to the following MathWorks documentations to know more:

'cat': https://www.mathworks.com/help/releases/R2021a/matlab/ref/double.cat.html

'Multidimensional Arrays': https://www.mathworks.com/help/releases/R2021a/matlab/math/multidimensional-arrays.html

Thanks.