A virtual touchscreen with depth recognition

摘要: While touch interfaces have become more popular, they are still mostly confined to mobile platforms such as smart phones and notebooks. Mouse dominate desktop due their portability, ergonomic design large number of possible interactions. In this paper we present a prototype for new interface based on cheap consumer-level hardware, which combines advantages the mouse interface, but additionally allows detection 3D depth values. This is achieved by using web cam point light source detecting hand shadow gestures in order compute finger tip positions. Our evaluation shows that concept feasible powerful interactions than with traditional can be achieved. Limitations include reduced input precision, insufficient stability utilised computer vision algorithms, requirement stable lighting environment.