> It would be interesting to see what a fisheye lens on a webcam
mounted
> in the centre of a room ceiling could detect over a period of a week.
> Or an IP security camera come to that - might be worth a try...
I recall the O2 memory project uses thermal cameras to detect position of
people in a room:
http://news.bbc.co.uk/1/hi/technology/7355777.stm
About 30 secs into the video explains briefly how these are used.
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