reading specific png files

In a folder I have a PNGFiles subfolder and several jpeg and overlay files. I want to read the png files with the same name as the .OVERLAY.

Can anyone help?Thanks.

Answer 1

[Image Analyst]

Untested code:

filePattern = fullfile(pwd, '**\*.png'); % Wildcard recurses into subfolders
fileList = dir(filePattern);
for k = 1 : numel(fileList)
    % Build the full filename of the PNG file in the PNG folder.
    pngFullFileName = fullfile(fileList(k).folder, fileList(k).name);
    % Get the base filename of the PNG file, without the extension.
    [folder, baseFileNameNoExt, ext] = fileparts(pngFullFileName);
    % Get the overlay file for this image in the current folder (one level up)
    ovlFullFileName = fullfile(pwd, [baseFileNameNoExt, '.overlay'])
    % If it doesn't exist, skip this file.
    if ~isfile(ovlFullFileName)
        warningMessage = sprintf('Warning: Overlay file does not exist:\n%s', ovlFullFileName);
        uiwait(warndlg(warningMessage));
        contiue;
    end
    overlayImage = imread(ovlFullFileName);
    % Do something with the PNG file and the overlay file.
end