Labeling JPEG Pictures and Saving to Dataset

I have a large set of JPEG pictures that I would like to label with a binary label. For example, for a given JPEG, the person viewing the image will either assign it a 1 for "cat present" or a 0 for "no cat". After the image is viewed and the user has assigned it a label, I would like the label for the corresponding image to saved in a dataset for later use. Any ideas of any matlab app or functions that can perform this task?

Answer 1

[Rishabh Mishra]

Hi,

It is advised to manually loop through each of the ‘.JPEG’ images in the folder and label them.

Refer to the MATLAB code below that serves the purpose.

% path of the folder where images are present 
myFolder = 'C:\Users\Documents\My Pictures'; 
% Get a list of all files in the folder with the desired file name pattern.  
filePattern = fullfile(myFolder, '*.jpeg');  
% Change to whatever pattern you need.  
theFiles = dir(filePattern);  
for k = 1 : length(theFiles)  
    baseFileName = theFiles(k).name;  
    fullFileName = fullfile(theFiles(k).folder, baseFileName);fprintf(1, 'Now reading %s\n', fullFileName);   
    % Now do whatever you want with this file name,   
    % such as reading it in as an image array with imread()imageArray = imread(fullFileName);  
    imshow(imageArray);  % Display image. 
    % after looking at image, save the image with new label in dataset folder (to create dataset) 
    % the label can be 0/1 
    prompt = 'Enter Label?';  
    x = input(prompt); 
    Path = sprintf('C:\Users\Documents\Dataset\%s.jpeg’,x); 
    Imwrite(imageArray,path);
end

To apply segmentation labelling on the images, Image Labeler Application in applications tab can be used.

Hope this helps.