Decals and Stickers in a more mainstream format

[Hageta]

Does anyone know of a repo of minifigure decals in a useable format like .png?

I've been working on a fan game for some time and I'm trying to get character customization going. Ideally I would have a folder full of all the decals for the torso, legs, face etc. which I can map onto the player model with shaders, but I cant find a reliable method to grab the images from the Ldraw files or Studio. I took a dive into the .dats and couldn't see any light at the end of that tunnel. 

The only method that has worked has been to export from MecaBricks into blender, which gives a great map like the one attached, but I'll be damned if I have to do that 100s of times over with varying results. 

Any help on this would be much appreciated, I have something cooking and it's going to be hot.

Most prints of minifigures are actually included in the geometry of the model and are not availabe in an image format.