The neuropsychological phenomenon by which the brain interprets vague images as specific ones is called Pareidolia. A good example of this is when you see faces or animals in clouds. You can pretty much "see" familiar objects in almost anything.
Take a look at the spotted jelly bean above? See anything?
I could see a face at first, but when it was paired with this, it became unmistakable.
The future queen of England, Kate Middleton.