Finger tracking is the use of the bare hand to operate a computer in order to make man-computer interaction much faster and easier. The search of the tips of the fingers deals with the extraction of information of the characteristics and positions of the hands. In this method the position and direction of the fingers are used to obtain 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 location of the fingertip plus recognition of a limited number of hand positions for "click-commands".
Finger-tracking systems are considered as a specialized type of posture / hand gesture recognition system.
Typical Specializations are:
1) Only the most simple hand postures and recognized.
2) The hand usually covers a part of the screen.
3) The positions of the fingers are in real time
4) Ideally, the system works with all types of funds
5) The system does not restrict the speed of hand movements
In finger tracking systems, except that real-time constraints do not currently allow for sophisticated approaches such as mapping 3D models or Gabor wavelets.