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Researchers at one of HP's labs in England have come up with a prototype of a pair of sunglasses with an embedded digital camera built-into them. The glasses dump all the thousands of digital images it captures to a PC or handheld at the end of the day, and fortunately there's some special software available which can filter the pictures and pick out the good ones or the ones that are most likely to be of some importance:

To tackle image overload, the HP system captures information about images, called metadata, too. This extra data keeps track of how and where a picture was taken and can spot if a subject was walking or turning. The system also inspects images to see if people are smiling or looking directly at the camera lens. "That sort of information can help us with the image processing," said Mr Robson, "to look at pictures and qualify them. This lets us judge whether they are good pictures in terms of composition and how well are they framed, but also in terms of the timing," he said, "is it the right sequence of images?"

They should combine this with the Deja View, that eyeglass mounted video camera which keeps the last 30 seconds of footage in its buffer so you can have time to hit the record button in case something important happens. Personally, we're not really interested in having a complete visual record of our day, but we can see how something like this could be useful.