im = (imread(sprintf('small/helmet_side_left_%04d.png',0)));

% Initialize sizes, output images, etc...

for i=0:252
    
    fprintf('Processing image %d\n',i);
    im = double((imread(sprintf('small/helmet_side_left_%04d.png',i))))/255;
    
    % Do someting with the image
    
end

% Continue ...