Finger-tracking is usage of bare hand to operate a computer in order to make human-computer interaction much more faster and easier.
Fingertip finding deals with extraction of information from hand features and positions. In this method we use the position and direction of the fingers in order to get the required segmented region of interest.
Finger pointing systems aim to replace pointing and clicking devices like the mouse with the bare hand. These applications require a robust localization of the fingertip plus the recognition of a limited number of hand postures for “clicking-commands”.
Finger-tracking systems are considered as specialized type of hand posture/gesture recognition system.
The typical Specializations are:
1) Only the most simple hand postures and recognized.
2) The hand usually covers a part of the on screen.
3) The finger positions are being found in real-time
4) Ideally, the system works with all kinds of backgrounds
5) The system does not restrict the speed of hand movements
In finger –tracking systems except that the real-time constraints currently do not allow sophisticated approaches such as 3D-model matching or Gabor wavelets.
Color Tracking Systems
Correlation Tracking Systems
Contour -Based Tracking Systems
The FingerMouse system makes it possible to control a standard11 mouse pointer with the bare hand. If the user moves an outstretched forefinger in front of the camera, the mouse pointer follows the finger in real-time. Keeping the finger in the same position for one second generates a single mouse click. An outstretched thumb invokes the double-click command; the mouse-wheel is activated by stretching out all five fingers.