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

專利號(hào)
US11800131B2
公開(kāi)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(shū)

  • Motion compensation mechanisms (which may also be referred to as temporal prediction or motion-compensated temporal prediction), which involve finding and indicating an area in one of the previously encoded video frames that corresponds closely to the block being coded.
  • Inter-view prediction, which involves finding and indicating an area in one of the previously encoded view components that corresponds closely to the block being coded.
  • View synthesis prediction, which involves synthesizing a prediction block or image area where a prediction block is derived on the basis of reconstructed/decoded ranging information.
  • Inter-layer prediction using reconstructed/decoded samples, such as the so-called IntraBL (base layer) mode of SVC.
  • Inter-layer residual prediction.
  • Intra prediction, where pixel or sample values can be predicted by spatial mechanisms which involve finding and indicating a spatial region relationship.

    • In the syntax prediction, which may also be referred to as parameter prediction, syntax elements and/or syntax element values and/or variables derived from syntax elements are predicted from syntax elements (de)coded earlier and/or variables derived earlier. Non-limiting examples of syntax prediction are provided below:

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