Codierungsverfahren, Decodierungsverfahren, Bitstrom, Codierer, Decodierer und Speichermedium

Details

Veröffentlichungs-Nr.

EP4712476

Anmeldetag

10. Mai 2023

Veröffentlichung

14. November 2024

Rechtsraum

EP

IPC

H04N19/186, H04N19/103

Abstract

A coding method, a bitstream, an encoder, a decoder, and a storage medium are disclosed in embodiments of the disclosure. The method includes the following. Mode enable information of a current block is determined. If the mode enable information indicates that a weighted chroma fusion mode is used for the current block and a chroma fusion merge mode is enabled for the current block, a bitstream is decoded to determine a value of first syntax flag information. If the first syntax flag information indicates that the chroma fusion merge mode is used for the current block, the bitstream is decoded to determine an index value of the current block. A parameter candidate list of the current block is constructed, and a model parameter of the current block is determined according to the parameter candidate list and the index value, where the model parameter is used for determining a first prediction value of the current block based on a cross-component prediction mode. As such, bit overhead can be reduced, and thus the coding efficiency can be improved.

Anmelder

Firma

GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Land

🇨🇳 China