| 摘要 |
<p>The present invention achieves an easy detection of a person who tries to take peeping pictures by eliminating invisible light from images that include the invisible light serving as disturbance pictures for prevention of taking peeping pictures. An image display system (1) comprises: an image display unit for displaying images; an invisible light emitting unit for emitting, together with the images, light other than the visible light to viewers; an invisible light receiving unit for receiving the invisible light, which has been reflected by an image pickup device carried by a viewer, to generate frame picture data; and a picture processing unit (143) for processing the picture data, thereby detecting the existence of the image pickup device. The picture processing unit (143) comprises: a background removing unit (150) that refers to reference picture data representing a background picture and that eliminates the components of the background picture from the frame picture data; and a flicker eliminating unit (151) that averages the frame picture data, which has been processed by the background removing unit (150), over a plurality of frames, thereby eliminating flickers.</p> |
