| 摘要 |
<p>A pointing device for the human-computer-interface which combines a standard 2D pointing device with a six-degrees-of -freedom (6DOF) tracking method based on a target body and a real-time, single-camera image processing algorithm. In 6DOF pointing mode, the user moves the device freely inside the camera's viewing volume while the tracking algorithm quasi-continuously and quasi-instantaneously detects the six spatial coordinates of the device's pose with respect to the camera and applies them to a 6DOF pointer onto the screen. The invented device has separate operating modes: 2D pointing, transition to 6DOF pointing, 6DOF pointing, 6DOF clutch, return to 2D pointing and abort. Standard mouse buttons and scroll wheel are operational in either mode. To change between 2D and 6DOF mode the 2D pointing device's body provides one additional button. The same button also temporarily allows interrupting the link between the 6DOF pointing device held by the user' s hand and the 6DOF pointer projected onto the screen.</p> |
