| 摘要 |
<p>A video processing system for use in creating three dimensional movement of a video image on a display screen 20. At least one set of axes is displayed on the display screen and a computer 24, in response to signals from a user operated stylus 21 and touch tablet 22, controls the manipulation of image data in an image store 26 to control rotational or translational movement of the image, with respect to an axis selected by the user. In the described embodiment several sets of linked axes may be defined. Rotational and translational movement with respect to an axis is controlled respectively by selecting a marker identifying the axis or by selecting a line representing the axis. Selection is made by way of a cursor under the control of the stylus and touch tablet. The system can also display a locus representing the user defined movement of e.g. the centre of the image.</p> |
