> hospital rooms look alike to us, to SIFT they don't
Well, to SIFT they'll all look different. Except for the hospital room in Portland, OR and the hospital room in Portland, ME that each happen to have a sign with "Portland Hospital" visibile in the picture. While I'm alarmed about the potential of computer vision to compromise my privacy, I have yet to see anything in actual use even be competent, let alone alarming.
Well, to SIFT they'll all look different. Except for the hospital room in Portland, OR and the hospital room in Portland, ME that each happen to have a sign with "Portland Hospital" visibile in the picture. While I'm alarmed about the potential of computer vision to compromise my privacy, I have yet to see anything in actual use even be competent, let alone alarming.