1. GESTURE RECOGNITION TECHNOLOGY

3. What is a Gesture? Any meaningful movement of the human body!
To Convey information or to interact with environment!
[pie 1984] identifies non-verbal signals!
According to Hall 65% of communication is non-verbal!

4. Mood, emotion Mood and emotion are expressed by body language
Facial expressions
Tone of voice
Allows computers to interact with human beings in a more natural way

5. Human Computer Interface using Gesture
Replace mouse and keyboard
Pointing gestures
Navigate in a virtual environment
Pick up and manipulate virtual objects
Interact with a 3D world
No physical contact with computer
Communicate at a distance

6. Public Display Screens
Information display screens
Supermarkets
Post Offices, Banks
Allows control without having to touch the device

7. Recognizing the Hand GesturesF C A

8. Data gloves

9. Data gloves
Data gloves provide very accurate measurements of hand-shape
But are cumbersome to wear
Expensive
Connected by wires- restricts freedom of movement

10. Data gloves - the future
Will get lighter and more flexible
Will get cheaper ~ $100
Wireless

11. Coloured Gloves User must wear coloured gloves Very cheap
Easy to put on
Eventually we wish to use natural skin

12. Different types of ColoredGloves

14. Data glove Detection
Colour
Segment
Noise
Removal 32 32
Scale by Area

15. Facial Expressions
Anger Fear Disgust Happy Sad Surprise

16. Iris Recognition

18. John Daugman There is only one iris recognition algorithm in use
The algorithm was developed mainly by John Daugman, PhD, OBE
It is owned by the company Iridian Technologies

19. Advantages of Iris Recognition
Irises do not change with age – unlike faces
Irises do not suffer from scratches, abrasions, grease or dirt – unlike fingerprints
Irises do not suffer from distortion – unlike fingerprints

20. Finding the Iris in the Image
It is easy to find the circular boundaries of the iris

21. Fake Iris Attacks

22. Advantages Replace mouse and keyboard Pointing gestures
Navigate in a virtual environment
Pick up and manipulate virtual objects
Interact with a 3D world
No physical contact with computer
Communicate at a distance

23. Hand Gesture Based Applications:
Computer Interface
A 2D/3D input device (Hand Tracking)
Translation of gestures to commands
More natural interface for 3D design applications
Aid for disabled and deaf people
Sign language analysis, translation
Sign language teaching
Using multimodality to enable communication between disabled people .

24. Entertainment:
Applications involving hand gesture recognition, from computer games to sound and image design applications

25. A Model for gesture recognition