The ability of a computer to scan, store, and recognize human
gestures as the mode of interaction with machines.
A gesture is a form of non-verbal communication in which
visible bodily actions communicate particular messages, either
in place of speech or together and in parallel with words.
Gestures include movement of the hands, face, or other parts of
Normal User Physically Challenged
Check for Errors
Conversion to Binary Image
Conversion to Grayscale Image
Zooming in Binary Picture
Update Background Picture
Transmit Image to System
Locate Hand in Picture
Gesture Recognition System
Hand motion Recognition System
Face Recognition System
Iris Recognition System
In order to detect hand gesture, data about hand will have to be
A decision has to be made as to the nature and source of the data.
Two possible technologies to provide this information are:
1)A glove with sensor attached that measure the position of finger
2)An optical method (Hand)
Task of identify an already detected face as a known or unknown
In more advance case “Telling exactly who’s face it is?”
Identify an object as a face and Decide if this face is
locate it in input image some one known or
Iris recognition is an automated method
of biometric identification that uses mathematical
pattern-recognition techniques on video images of the
irises of an individual's eyes, whose complex random
patterns are unique and can be seen from some
1. Sign language recognition
2. Directional indication through pointing.
3. Control through facial gestures
4. Immersive game technology
5. Affective computing.
6. Remote control.
7. Alternative computer interfaces
• The cost of implementation
• Such systems are difficult to develop as each
gesture is assigned a specific control
command, this system is not platform
independent since certain control commands
vary as the operating system varies.
• Control of consumer electronics
• Computer games
• Security System
• In ATM’s