.mat converstion to jpg png jpeg etc

How i can convert the whole data set into jpg jpeg formate from .mat formate? currently each image is in .mat formate

[Walter Roberson]

Is it one mat file for each image? Is the variable name in the mat file consistent?

Are all images in the same .mat file? Are they in separate variables?

Answer 1

[Gayathri]

Hello @Asaf Raza,

Inorder to convert the images in '.mat' format to '.jpg', we should load each file and then convert using a "for loop". Please refer to the code below for achieving the same.

% Specify the folder containing the .mat files
folderPath = 'path_to_your_mat_files'; % Replace with your folder path
matFiles = dir(fullfile(folderPath, '*.mat')); % Get all .mat files

% Loop through each .mat file
for k = 1:length(matFiles)
    % Load the .mat file
    matFileName = fullfile(folderPath, matFiles(k).name);
    data = load(matFileName);

    % Extract the image data (adjust the variable name as necessary)
    img = data.imageData; % Replace 'imageData' with the actual variable name

    % Convert to uint8 if necessary
    img = im2uint8(img); % Ensure the image is in the correct format

    % Create a filename for the output image
    [~, name, ~] = fileparts(matFiles(k).name); % Get the base name of the file
    outputFileName = fullfile(folderPath, [name, '.jpg']); % Change extension to .jpg

    % Save the image
    imwrite(img, outputFileName);
end

The above code is written assuming that each image is stored in a separate '.mat' file. If it is a single MAT file for all images please modify the code accordingly.

For more information on "imwrite" function, refer to the following documentation link.

https://www.mathworks.com/help/matlab/ref/imwrite.html