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projector projects the visual information on physical surfaces such as walls and other objects. The
                  camera  recognizes  and tracks  the  user’s  hand gestures  with  the  help of computer-vision
                  techniques. Google Glass created in 2013 is an example of a wearable AR interface. It helps the
                  user remain focussed on the work. It displays on the user’s glass screen through a small projector.
                  It responds to voice commands to activate an application at any time.

                  AR enters  the  lives  of  most  people  through
                  phones  and  tablets.  Vito  Technology’s  Star
                  Walk app lets a user point their phone or tablet
                  camera at the sky and see the names of stars
                  and planets superimposed on the image. One

                  more app called Layar uses the GPS location of
                  the  smartphone  and  the  camera  to  collect
                  information about the user’s surroundings. The                       Star Walk app
                  app then shows information about the nearby restaurants, stores and places of interest.

                                                     Disney Research developed a colouring book app with AR. After
                                                     the user colours in a character in the book, he / she launches
                                                     the app on the device. The app uses the camera to detect the
                                                     character that was coloured. The app also uses AR to recreate
                                                     the character in a 3D form on the screen.
                           Colouring book
                  VIRTUAL REALITY

                  In Virtual Reality, we create a virtual world that users can interact with. In this world, the user
                  cannot easily distinguish between what is real and what is virtual.
                  In both VR/AR, people must wear HMD (Head Mounted Displays) or
                  a VR Headset like Oculus Rift or the Google Cardboard. The headset
                  has two small video display screens one for each eye. This creates

                  a sense of three-dimension. You can also wear headphones and
                  gloves to experience VR and AR. The headphones play stereophonic
                  sound or even 3-D sound so that you can feel that you are hearing
                  sounds not only near the ears but also in various places all around              Virtual Reality
                  you. The gloves have sensors to collect data about your hand movements. This equipment and
                  the software give you interactive sensory feelings similar to real-world experiences.
                  Both AR and VR provide a total immersive experience to the user. These technologies find the
                  greatest use in entertainment, sports/gaming, close interactive eye to eye communication and
                  aided shopping experiences.

                  Imagine sitting at home and browsing through a store in London where you can see and feel the
                  merchandise you wish to buy. This technology is also used in education. Imagine being a live
                  participant in a historical battle or a student of anatomy in medical school. You can really feel the
                  battle or touch the organs.





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