Hems

Custom Search

Thursday, 25 August 2011

Prnanav mistry sixth sense device (with video)


                            Sixth sense and Its uses

Sixthsense is a wearable gestural interface device developed by Pranav Mistry, a PhD student in the Fluid Interfaces Group at the MIT Media Lab. It is similar to Telepointer, a neckworn projector/camera system developed by Media Lab student Steve Mann[1] (which Mann originally referred to as "Synthetic Synesthesia of the Sixth Sense").[2]

Construction and workings:- 

The SixthSense prototype comprises a pocket projector, a mirror and a camera contained in a pendant like, wearable device. Both the projector and the camera are connected to a mobile computing device in the user’s pocket. The projector projects visual information enabling surfaces, walls and physical objects around us to be used as interfaces; while the camera recognizes and tracks user's hand gestures and physical objects using computer-vision based techniques.[3] The software program processes the video stream data captured by the camera and tracks the locations of the colored markers (visual tracking fiducials) at the tips of the user’s fingers. The movements and arrangements of these fiducials are interpreted into gestures that act as interaction instructions for the projected 
application interfaces. SixthSense supports multi-touch and multi-user interaction.

Example applications:- 
The SixthSense prototype contains a number of demonstration applications.
The map application lets the user navigate a map displayed on a nearby surface using hand gestures to zoom and pan 
The drawing application lets the user draw on any surface by tracking the fingertip movements of the user’s index finger.
SixthSense also implements Augmented reality; projecting information onto objects the user interacts with.
 The system recognizes a user's freehand gestures as well as icons/symbols drawn in the air with the index finger, for example:
 A 'framing' gesture takes a picture of the scene. The user can stop by any surface or wall and flick through the photos he/she has taken.
Drawing a magnifying glass symbol takes the user to the map application while an ‘@’ symbol lets the user check his mail.
The gesture of drawing a circle on the user’s wrist projects an analog watch.


Saturday, 20 August 2011

Discovery of Computers (Phase 1)

               Discovery of computers (Phase 1)


 Some important inventions led to discovery of computers are:-

2400 BC:-
The abacus- the first known calculator is invented in Babylonia.

500-300 BC:-Ancient Indian writer Pingala describes the first binary (two digit) numbering system.

1492 AD:- Italian Leonardo Davinci designs the first mechanical calculator and a humanoid robot.
1614 AD:-Scotsman John Napier invents a system of movable rods based on logarithms which could do sums.

1642 AD:-Frenchman Blaise Pascal invents the “PASCALINE”, the first serious calculating machine to help his father, a judge in a tax court.





1679 AD:German Gottfried Leibniz perfects the binary system.

1801 AD:-
Joseph Marie jacquard invents an automatic sewing machine controlled by punched cards. During its first demonstration in Lyon, France, the machine is destroyed an angry mob.

1834 AD:-
Charles Babbage designs the Analytical engine – the world’s first computer, with punch card input devices, an arithmetic processor and a memory to store numbers. He runs out of money before it is ever built.