I am working on my college project on Cryptographic key generation using facial features and I am new to MATLAB

I am working on a project for Generation of Cryptographic keys using facial features using ICA algorithm. I am using AT&T data base having 40 folders with 10 images each. I found the .pgm extension is not acceptable in this code. I need to know about the 'xv' program which might help.

I am totally new to MATLAB so there are tons of problems I am facing.

Attached is the code I am using for reading all the images.

Answer 1

[Walter Roberson]

After the lines

        % Get PNG files.
        filePattern = sprintf('%s/*.png', thisFolder);
        baseFileNames = dir(filePattern);

add

        % add on pmg files
        filePattern = sprintf('%s/*.pmg', thisFolder);
        baseFileNames = [baseFileNames;dir(filePattern)];

[Prakhar Saxena]

thank you after adding files what will be the next step?