But the new technology being developed has a far more useful application. It may eventually allow the content of pictures and video to be determined automatically. Currently if you search for a picture online, e.g. at a stock agency, you can only find images if they have been carefully keyworded. These keywords are then stored as 'metadata' along side the actual image file.
As someone who submits images for stock I can vouch for how time consuming this can be, so I'm looking forward to the day when our computers can do it for us - even if it does mean I have to get my mouth around Semantic Video Analysis.