question about scene parameterization

Hi all,

I want to generate a unique texture for the sponza model (http://hdri.cgtechniques.com/~sponza/).
The model has defined texture coordinates, but since some object has repeated parts, those vertices are mapped in the same (u,v). Is there any way to generate a texture for the scene such that each vertex has a unique (u,v)? Can I do it using blender? how?

Thanks,

-Tim