Does anyone know how or is able to rip the revised bust art of all the characters in Persona 2 Innocent Sin PSP?

I used UMDGen to extract the contents of the ISO, but but then I had a CPK file and a bunch of BIN files.

Then I extracted the contents of the CPK file and got a bunch of BIN and BNP files, but I'm not sure where to go from here XD

Any help would be appreciated !

Thanks in advance!