METHOD FOR PROCESSING AND TRANSMITTING A PICTURE SEQUENCE

摘要

Various methods for reducing redundancy and irrelevance are known for the transmission of picture information via a channel having a limited data capacity. Thus, movement vectors are determined and coded for part-picture areas. The part-picture areas themselves are also subjected to coding, for example a discrete cosine transformation (DCT). A method is specified which provides the possibility of fast picture build-up with reliable picture reconstruction. In the method according to the invention, a picture (TP1, TP2) subjected to planar low-pass filtering by one factor is transmitted with picture content reduced in the local resolution. After that, picture content which has been subject to planar low-pass filtering by a lower factor (TP1) is supplemented in the first picture. Finally, unfiltered picture content is supplemented. Picture-element-to-picture-element differences of pictures following one another in time are used as a measure for controlling this three-stage picture build-up. Moving-picture codecs.