CONTROL OF DATA PROCESSING

摘要

Data processing apparatus arranged to receive successive images from a video camera comprises means for detecting inter-image motion for selected points in an image region associated with a control function of the data processing apparatus; and means for executing the control function if inter-image motion is detected in the image region; in which the detecting means is arranged to detect inter-image motion by detecting the cumulative inter-image motion for the points in the image region over a group of m consecutive images, where m is at least three.