Verfahren zur Wiederzuordnung der Wahl eines Unterabtastungsverfahrens nach dem Kriterium einer Datenraten-Reduktion einer Folge von Hilfsdaten, die zur Rekonstruktion eines unterabgetasteten, elektronischen Bildes dienen.

摘要

The aim of the invention is to simultaneously offer enhanced bit-rate reduction performance and better fidelity to the configuration of an HD source image. <??>According to the invention, the method is intended to be applied to a multiprocessing system in which, within the image or within blocks of the image, image elements are determined (41) which are able to accept indifferently at least two distinct sub-sampling processing operations; and the choice (43) is made of associating with each of the said indifferently-processed image elements, that one of the said indifferent processing operations permitting optimal bit-rate reduction of the assistance data. <??>A preferred application is MAC-channel transmission HDTV image compression. <IMAGE>