Washington: Believe it or not, now you
could be able to control your television by waving arms in the
An Indian-origin scientist, Ramesh Raskar, and his team
from the Massachusetts Institute of Technology Media Lab, have
modified an everyday LCD screen into a TV that can "see" the
world in front of it in 3D.
"It means a viewer can control on-screen objects by
waving their arms in the air without touching the screen, let
alone a mouse or keyboard," Raskar said.
He said, "This is a level of interaction that nobody`s
ever been able to do before".
Raskar along with his colleagues Matthew Hirsch and
Henry Holtzman created a prototype of the screen called
bi-directional or BiDi that allows users to manipulate or
interact with objects on the screen in three dimensions. The
model will be presented at Siggraph Asia later this week.
"It will also function as a 3D scanner. If you spin an
object in front of screen, the software will stitch together a
3D image," he added.
Raskar`s team was inspired by the way manufacturers of
LCD panels, including Sharp and Planar Systems, are
experimenting with adding optical sensors between a panel`s
pixels so that it can act as a touch-screen interface, journal New Scientist reported.
But such displays have poor vision, like a camera with
no lens, says the researchers: they can clearly image objects
that are in direct contact with the screen, but anything
further away is blurred.