Can models from Sonic Adventure be extracted?

I have mild modeling knowledge and would be very happy to get my hands on the original models from SA. I own SA and know how to extract the image but don't know how to decompile. I know and own c++. I have googled everything imaginable an have come out with no results.

I know that there is a possibility that models from the Dreamcast version of Sonic Adventure could be extracted, but I'm not sure it has been attempted yet.

Most of the textures in Sonic Adventure reside in .PRS & .PVR files. The majority of the textures reside in the .PRS files, which are compressed .PVM files, and which are also compressed .PVR files. Unfortunately I have not been able to extract any models from the .MLT files.

Here are some texture hacks I have done myself with the Dreamcast version:
http://forums.segakatana.com/viewtopic.php?t=85

Here is a thread on Sonic Adventure models, but this was done with the PC version:
http://forums.sonic-cult.org/index.php?showtopic=941

I hope that helps some!

we don't allow post about ripping/extracting from commerical games