| 摘要 |
A method and a device are adapted for three-dimensional control, especially of a display. The ranges of application include three-dimensional "mice" and touch screens controllable in three dimensions. A free control space (S) is located between a radiant means and a detecting means, of which at least one is two-dimensional. An object, such as a human finger, is moved freely within the control space (S) in three directions (x, y, z), thus throwing two or more shadows (S1, S2) on the detecting means (10). The current position of the object (12) in the control space (S) is established on the basis of the absolute and relative positions of the shadows (S1, S2) detected. If the distance between the object (12) and the detecting means (10) is altered, the spacing of the shadows (S1, S2) is likewise altered. Generated control information indicates the current position of the object in three dimensions. |
