MIT prepared a tracking system(WiTrack) that can work through walls
Research
team at MIT’s (Massachusetts Institute of Technology) in CSAIL ( Computer
Science and Artificial Intelligence Laboratory) prepared a high-resolution 3D
motion tracking system which can work
through walls. From a static location connected to a computer , the
system can track you as you walk around the house and even if you hide behind
the wall. This system has a superb resolution by which it can understand the
gestures of the body ( like if you lift your hand) as well.
This system
is known as WiTrack which stands for Wireless Tracking. WiTrack is more cost-effective
and the simple combination of hardware and software than Microsoft tracking
system called Kinect. Microsoft
Kinect tracking system tracks via infrared cameras which can’t track the person
or object behind the wall. Such technology is known as computer vision. In order
to develop the results from infrared cameras, Kinect processed through complex algorithm whereas in WiTrack process is pretty simple because cameras aren't used in it.
WiTrack
tracks you or an object with the help of radio waves. These radio waves are so
low-power. According to research team, these waves are 100 times weaker than
WiFi waves and 1000 times weaker than mobile waves. WiTrack
consists of four antennae — one that transmits radio waves, and three
receivers. According to Fadel Adib,
one of the researchers working on WiTrack, the transmitted radio waves are
“structured in a particular way to measure the time from when the signal was
transmitted until the reflections come back.” Because the three
receivers are spaced apart, it’s possible to triangulate the delay of these
reflected signals, to build up a 3D map. Developers say, this system works
accurately in the range of 10-20cm (4-8inch).
Research
team of MIT has also developed some tracking systems to track through the
walls, but in which one system consisted on a very large antenna while second
worked with WiFi. Both systems were enormous in size as well as poor in
performance.
WiTrack
tech can be popular in future due to its cheap cost and good performance, but
there is not any likelihood of its usage in future. Kinect is more efficient
than WiTrack as it can track up to millimeter. Moreover, WiTrack can only track
one person or object in one time. Developers say they can increase its
efficiency to track more than one things. In
the last I would like to say if this
system isn't as per our requirements then at least we can utilize this tech for
some other usages such as when person reaches at home light turn on
automatically.
Categories:
Technology Reviews
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