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Apparatus, a method and a computer program for video coding and decoding

專利號
US11800131B2
公開日期
2023-10-24
申請人
NOKIA TECHNOLOGIES OY（FI Espoo）
發(fā)明人
Miska Matias Hannuksela; Kemal Ugur
IPC分類
H04N19/463; H04N19/70; H04N19/30; H04N19/61
技術(shù)領(lǐng)域
prediction,picture,bitstream,layer,pictures,syntax,coded,in,decoding,nal
地域： Espoo

摘要

A method comprising encoding a bitstream comprising a base layer, a first enhancement layer and a second enhancement layer; encoding an indication of both the base layer and the first enhancement layer used for prediction for the second enhancement layer in the bitstream; encoding, in the bitstream, an indication of a first set of prediction types that is applicable from the base layer to the second enhancement layer, wherein the first set of prediction types is a subset of all prediction types available for prediction between layers, and encoding, in the bitstream, an indication of a second set of prediction types that is applicable from the base layer or the first enhancement layer to the second enhancement layer, wherein the second set of prediction types is a subset of all prediction types available for prediction between layers.

說明書

Another aspect is the operation of the decoder, when it receives the bitstream encoded as described above. The decoding operations of the embodiments are opposite to the encoding operations, and they are depicted in FIG. 9. The decoder interprets from a bitstream a reference layer for an enhancement layer (900) and interprets from the bitstream at least one type of prediction applied from the reference layer to the enhancement layer, wherein the at least one type of prediction is a subset of all prediction types available for prediction between layers (902). Then the decoder decodes said enhancement layer using only said at least one type of prediction from the reference layer (904).

Thus, the decoder adapts the decoding process to use only the interpreted types of prediction from the reference layer to the enhancement layer.

權(quán)利要求

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