The models are not copyrightable, they are a derivative work of the collection of works that went into producing them as they are a mathematical transformation of that data.
> The Office will not register works produced by nature, animals, or plants. Likewise the Office cannot register a work purportedly created by divine or supernatural beings although the Office may register a work where the applicant or the deposit copy(its) state that the work was inspired by a divine spirit.
> Examples:
> • A photograph taken by a monkey.
It then goes on...
> Similarly, the Office will not register works produced by a machine or mere mechanical
process that operates randomly or automatically without any creative input or
intervention from a human author.
I believe that taking a bunch of photographs (or other works) and producing a model falls into that category of a machine or mechanical process that operates without creative input.
However I do also believe that a model is sufficiently transformative that it, in of itself, is not an infringement... and however again, the output of the model is not copyrightable itself and it may be infringing upon the works used to produce it.
