The VG Resource

Recently I tried to extract 3d assets from the JRPG Blue Dragon, but ran into a problem, the extracted files are in an unknown format that I couldn't find any info about. The 3d models are formatted as .hdb and.hmb files so I couldn't find any ways to export them to a more common format. Even the dds textures seems to be coded differently so most of the viewers cannot access them and will always return an error.
Does anybody know how a way to export them? or a tool to view them?

Hopefully it's not a faux pas to necro this, but I might have some helpful info. On this page, "Imaginary Z" claims to have figured it all out, and provides a few scant details. Unfortunately, there's no contact info that I could find, but I did see one post where someone mentioned Imaginary Z 10 years ago (and then dropped off of the forum themself). If anyone still on the site today knows where to find Imaginary Z, perhaps they could crack this open for us? If not, maybe something on that page is useful to someone with a bit more knowledge than me...