Nick’s Blog


High Resolution Security Camera

by Nick on Aug.25, 2009, under Ideas

Years ago I had an idea for a security camera that would improve security in establishments such as banks and shopping centres. It seems that most crime stopping programmes still try to get the public to help round up some criminal by showing us a blurred extract from a moving image. Only yesterday there was a report on the BBC web site that only one in 1000 cameras actually helps to capture criminals. What I want to do is improve this situation. The idea is essentially really simple. You take a camera and ask it to survey an entrance, walkway, or any area where people will tend to be looking ahead. The camera then attempts to recognise the position of individuals within the scene and possibly recognise the presence of faces (not facial recognition). Once we have reached this stage then we can use a higher resolution camera with pan and zoom ability to take snapshots of the individual faces.

The result would be a video of the scene at the current resolution and then high resolution images of faces. It might be possible that the system could recognise if an individual has looked up and if not it would use white noise as a distraction. I seem to remember hearing that a blast of white noise will often make people look up. (continue reading…)

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