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

專利號(hào)
US11800131B2
公開日期
2023-10-24
申請(qǐng)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(shuō)明書

  • In some embodiments, all layers indicated as source for sample prediction may be inserted into one or more initial or final reference picture lists and/or one or more of the encoding and/or decoding operations for reference picture list construction as described below may be performed.

    • According to an embodiment, motion information may be predicted from another component picture if indicated by the encoder. For example, a reference index and a motion vector from another component picture e.g. on another layer may be included as a candidate in motion vector prediction such as in the merge candidate list and/or in the AMVP candidate list. A motion field may be defined to comprise the motion information of a component picture. If a reference component picture has a different spatial resolution than that of the current component picture or if the motion field of the reference component picture has a different spatial resolution than that of the current component picture, the motion field of the reference component picture may be resampled or mapped to be applicable for the current component picture.

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