The Codex of Business Writing Software for Real-World Solutions 2.pptx
Virtualkeyboard ajay
1. Presented By:-
Mr. Ajaysingh G. Rajendrakar
Seminar on Virtual Keyboard Technology
Department of Computer Science & Engineering
Shri Sant Gajanan Maharaj College of Engineering, Shegaon,
Dist- Buldhana – 444 203 (Maharashtra)
2017-18
3. Introduction
A virtual keyboard is actually a key-in device, roughly a size of a fountain pen
& which uses highly advanced laser technology.
In a virtual keyboard, camera tracks the finger movements of the typist to get
the correct keystroke.
The main features are: platform independent multilingual support for
keyboard text input, built-in language layout and setting, copy/paste etc.
4. Virtual keyboard
Virtual Keyboard is just another example of today’s computer trend of
"smaller and faster“.
Virtual Keyboard uses sensor technology and artificial intelligence to let
users work on any surface as if it were a keyboard.
The keyboard is projected optically on a flat surface and, as the user
touches the image of a key, the optical device detects the stroke and sends
it to the computer.
5. Modules of Virtual Keyboard
The Virtual Keyboard system comprises of three modules:-
The sensor module
IR-light source
The pattern projector
6. Sensor module:
The Sensor Module serves as the eyes of
the Keyboard Perception technology .
The Sensor Module operates by locating
the user's fingers in 3-D space and tracking
the intended keystrokes.
Keystroke information processes and can
then be output to host devices.
7. IR Light source :
The Infrared Light Source emits a beam of
infrared light .
This light beam is designed to overlap the
area on which the keyboard pattern projector
or printed image resides.
This helps in recognizing the hand
movements and the pressing of keys .
8. Pattern projector:
The Pattern Projector or optional printed image presents the image of the
keyboard
This image can be projected on any flat surface.
The projected image is that of a standard QWERTY keyboard, with all the
keys and control functions as in the keyboard.
10. Advantages
Portability
Accuracy
Speed of text entry
Lack of need for flat or large typing surface
Ability to minimize the risk for repetitive strain injuries.
No driver software necessary, It can be used as a plug and play device.
11. Drawbacks
It is very costly.
The room in which the virtual keyboard is used should not be very bright so
that the keyboard is properly visible.
Virtual keyboard is hard to get used to. Since it involves typing in thin air, it
requires a little practice. Only people who are good at typing can use a
virtual keyboard efficiently.
12. Applications
High-tech and industrial Sectors.
Used with Smart phones, PDAs, email, word processing and spreadsheet
tasks.
As computer/PDA input.
Gaming control.
13. Conclusion
A Virtual keyboard system based on a true-3D optical range camera.
It is also used in 6th Sense Technology Device in which it is not depends on
surface. The feedback text and/or graphics may be integrated with such
projector, thus enabling truly virtual working area.
Thus virtual keyboards will make typing easier, faster, and almost a pleasure.
14. References
1] A. Erdem, E. Yardimci, Y. Atalay, V. Cetin, A. E., “Computer vision
based mouse”, IEEE proceedings of International Conference on
Acoustics, Speech, and Signal Processing (ICASS), 2000.
2] Chu-Feng Lien, “Portable Vision-Based HCI – A Real-time Hand
Mouse System on Handheld Devices”, National Taiwan University,
Computer Science and Information Engineering Department.
3] Hojoon Park, “A Method For Controlling The MouseMovement using a
Real Time Camera”, 2008, Brown University,Providence ,RI ,USA,
Department of computer science.