| 摘要 |
<p>A personal computer system (1) provides a gaze-controlled graphical user interface having a bidirectional and a unidirectional interaction mode. In the bidirectional interaction mode, a display (30) shows one or more graphical controls (31a, 31b) in motion, each being associated with an input operation to an operating system (10) or application. A gaze tracking system (40) provides gaze point data of a viewer (99), and a matching module (50) attempts to match a relative gaze movement against a relative movement of one of the graphical controls. The system comprises a selector (60) controllable by a modality other than gaze. The system initiates a transition from the unidirectional interaction mode to the bidirectional interaction mode in response to an input received at the selector. The display then shows graphical controls in motion in a neighbourhood of the current gaze point, as determined based on current gaze data provided by the gaze tracking system. Preferably, the graphical controls may only be in motion in the neighbourhood of the current gaze point, with the remainder of the display being unaffected. The invention improves the usability of gaze tracking GUIs including their swiftness and accuracy by combining different interaction modes.</p> |
