US 2025/0063180 A1 · METHOD AND DEVICE FOR CODING INTRA PREDICTION MODE

Abstract

According to the present disclosure, an image decoding method performed by a decoding device includes the steps of acquiring image information including prediction-related information from a bitstream; deriving an intra prediction mode with respect to a current block on the basis of the prediction-related information; generating prediction samples with respect to the current block on the basis of the intra prediction mode with respect to the current block; and generating reconstruction samples with respect to the current block on the basis of the prediction samples with respect to the current block, wherein the intra prediction mode is derived on the basis of whether an upper neighboring block of the current block exists in the same coding tree unit (CTU) as the current block.

Claims16

Dependent claims

An image decoding method performed by a decoding apparatus, the image decoding method comprising:

obtaining image information including prediction related information from a bitstream;
deriving an intra prediction mode for a current block based on the prediction related information;
generating prediction samples for the current block based on the intra prediction mode for the current block;
and
generating reconstructed samples for the current block based on the prediction samples for the current block,
wherein the intra prediction mode is derived based on whether a top neighboring block of the current block is present in a same coding tree unit (CTU) as the current block.

3 more elements

An image encoding method performed by an encoding apparatus, the image encoding method comprising:

determining an intra prediction mode for a current block;
generating prediction samples for the current block based on the intra prediction mode for the current block;
generating prediction related information based on the prediction samples for the current block;
and
encoding image information including the prediction related information,
wherein the intra prediction mode is determined based on whether a top neighboring block of the current block is present in a same coding tree unit (CTU) as the current block.

3 more elements

Dependencies are inferred from the claim text.

Method and device for coding intra prediction mode

Life of this patent

Method and device for coding intra prediction mode

Life of this patent

Abstract

Claims16