Deep field

Knight, Helen
January 2005
Engineer (00137758);1/14/2005, Vol. 293 Issue 7666, p11
The article reports that the U.S. Department of Homeland Security is funding trials early this year of a 3D X-ray scanner being developed in Great Britain. It could provide airport security operators with video images containing "hitherto unseen" details of objects. These trials will allow researchers, led by Paul Evans, head of the vision systems group at Nottingham Trent University, to assess the benefits of 3D moving images produced by the scanner to help operators spot weapons in baggage. The technology uses two visual phenomena, kinetic depth and stereopsis, to create a sensation of depth in which contours and lines change their length and direction simultaneously.


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