This Modified code takes into account of pore size distribution which takes the Periodic box dimensions as input arguments and also gives a solution.log file which contains the location of the pores and a matlab file for viewing this locations.
This is just an extension of the original code (link given below) developed by Supriyo Bhattacharya.
His personal webpage : https://supriyob.wordpress.com/about/research/
And the papers where the calculations are described