4Gesture navigation

Nowadays gestures are very popular way for application control and many people are using it every day. Actually, we can use gestures in our mobile devices, computers applications, game consoles, etc. It is expected that gestural interaction will be available in almost every device in just a few years’ time. High popularity of gesture navigation forces researchers to improve these technologies. This is an obvious trend since computer performance is no longer the bottleneck of the more natural navigation and control using gestures [2].

There are two main areas in the field of gesture recognition depending on the input hardware. The first area focuses on gestures designed for touch devices, such as tablets, touchpads or smartphones. The other area deals with gestures performed in front of a 2-dimensional or stereoscopic camera. With some adjustments, the same algorithms can be applied to recognize gestures in both areas. Additionally, the algorithms for stereoscopic cameras can be modified to use 3D coordinates for tracking in all three dimensions [2].