Intra-prediction method for multi-layer images and apparatus using same
AssigneeElectronics and Telecommunications Research Institute
InventorsHa Hyun Lee, Jung Won Kang, Jin Soo Choi, Jin Woong Kim
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Abstract
An intra-prediction method for multi-layer images is provided. The method comprises the steps of: deriving an intraprediction mode of a predictive target block of an enhanced layer; generating an alternative sample for an unavailable reference sample of the predictive target block on the basis of a reference layer for the enhanced layer; and generating a predictive block for the predictive target block by using the intra-prediction mode and the alternative sample.
Claims16
An intra prediction method for a multi-layer video, comprising steps of:
- deriving an intra prediction mode of a prediction target block of an enhancement layer;
- generating a replacement sample corresponding to an unavailable reference sample of the prediction target block based on a reference layer corresponding to the enhancement layer;
- and
- generating a prediction block corresponding to the prediction target block using the intra prediction mode and the replacement sample and available reference sample of prediction target block.
An intra prediction method for a multi-layer video, comprising steps of:
- deriving an intra prediction mode for a prediction target block of an enhancement layer;
- generating a replacement sample corresponding to an unavailable reference sample of the prediction target block, the replacement sample generated based on an available reference sample of the prediction target block or a reference layer corresponding to the enhancement layer;
- and
- generating a prediction block corresponding to the prediction target block using the intra prediction mode and the replacement sample and available reference sample of prediction target block.
A video decoder, comprising:
- a block prediction module for generating a prediction block of the prediction target block;
- and
- an adder for generating a reconstructed block by adding the prediction block to a residual block of the prediction target block received from a video encoder,
- wherein the block prediction module is configuring for:
- deriving an intra prediction mode of a prediction target block of an enhancement layer;
- generating a replacement sample corresponding to an unavailable reference sample of the prediction target block based on a reference layer corresponding to the enhancement layer;
- and
- generating a prediction block corresponding to the prediction target block using the intra prediction mode and the replacement sample and available reference sample of prediction target block.
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