The coordinate position control system which possesses with the coordinate position control unit which controls the specification coordinate position which responds to the manipulation of the aforementioned coordinate indicating arrangement the coordinate position

摘要

When an operator operates a pointing device, a direction computing section computes a movement vector from an image photographed by an image sensor, and when the movement vector is larger than a threshold, a direction correcting section determines the movement vector as invalid based on the recognition that the movement vector was caused by an abrupt change in the illumination or other conditions, and outputs only movement vectors that are smaller than the threshold to a coordinate position updating section.