| 摘要 |
Groups of pictures are formed, each group including successive pictures in an original chronological order which is coded by forming a prediction structure with at least one picture as an intra-frame, each being intra-coded, while other pictures in the group are inter-frames, each predicted from and inter-coded in relation to at least one reference frame. The prediction structure is designed such that each intra-frame is a reference frame from which at least one picture of a picture group that precedes the intra-frame as well as the least one picture of the group of pictures that succeeds the intra-frame are predicted. The inter-frames include several non-references pictures from which no pictures of the sequence are predicted. A transmission sequence having a chronological transmission order is formed from the coded pictures of the group of pictures, at least some of the coded non-referenced pictures being the first pictures of the transmission order.
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