I think it might be. I'm pretty sure I don't have an internal monologue the way people describe it, and I definitely can't conjure up actual images in my mind. I can however imagine sounds or music.
I was about to write something almost exactly this. However I can "hear something" if I try but definitely not picture something in the literal sense.
Edit: I also have trouble recognising the faces of people I've only met once or twice, and I'm assuming the two things are related. Do you have the same?