HIGH-DEFINITION TELEVISION SYSTEM

摘要

The present invention relates to a high-definition television system that comprises the following elements: at least two television cameras; a unit comprising several analog-digital converters; a video-signal-standard converter; a RAM-type memory; means for synthesizing an output video signal which are connected to each other and to the outputs of the television cameras; and a central processor such as a (personal) computer. The means for synthesizing an output video signal comprise a multiple-channel geometric distortion corrector as well as a synchronizing unit. The above-mentioned means are used in a dynamic process for efficiently assembling image fragments into a full "seam-less" image, wherein said image has a definition of at least 3000 x 4000 elements with a resolution and a contrast at least equal to those of pictures on large-scale photographic or cinematographic X-ray films. The corrector is connected to the television camera outputs through the analog-digital conversion unit and to the (personal) computer input through the video-signal-standard converter and the RAM. The control input of the synchronising unit is connected to the synchronisation output of at least the last television camera, while the control outputs of said unit are connected to the clock input of the analog-digital conversion unit, to the address inputs of the corrector and to the control and address synchronisation inputs of the video-signal-standard converter.