However there currently aren't any open source implementation of DICOS : you have to contact TSA to get access to binaries of a DICOS developper toolkit. As a further hurdle, big brands of security scanners lobby hard against this standard and opening themselves up to competition.
As the CTO of a 3rd-party algorithm provider for scanners, I believe the "Open Architecture" approach is the future for airports. We are releasing the pyDICOS library to make it more accessible and hoping that people make the most out of it around the world, and making it standard everywhere.
Please leave a star on github and contribute if you feel like it !