The computer tracks the hand, echoing its position with a hand icon displayed on the television. Graphical overlay on television screen. Close-up of graphical controls used for this implementation. Two sliders control channel and volume. The hot spot of the hand icon is shown to the user by the solid area underneath the hand drawing.
Hardware components for prototype.
The computer analyzes the image and displays the appropriate graphics on the computer display screen. The computer then issues the appropriate commands over a serial port to an electronically controllable remote control. While this prototype uses two display screens, future versions could display the graphics overlay directly on the television screen. References W. T. Freeman and C. Weissman, Television control by hand gestures , Intl.