Videocodierungsverfahren und -Vorrichtung, Videodecodierungsverfahren und -Vorrichtung, Vorrichtung, System und Speichermedium

Details

Veröffentlichungs-Nr.

EP4742673

Anmeldetag

3. Juli 2023

Veröffentlichung

9. Januar 2025

Rechtsraum

EP

Abstract

The present application provides a video encoding method and apparatus, a video decoding method and apparatus, a device, a system, and a storage medium. When a current chroma block is predicted by using a cross-component prediction mode, cross-component prediction model parameters and a filtering identifier of the current chroma block are determined, the filtering identifier of the current chroma block being determined on the basis of a filtering identifier of an encoded/decoded image block around the current chroma block; on the basis of the cross-component prediction model parameters, cross-component prediction is performed on the current chroma block to obtain a first prediction value of the current chroma block; and on the basis of the filtering identifier and the first prediction value of the current chroma block, a second prediction value of the current chroma block is determined. That is, according to the present application, by filtering a chroma prediction value obtained by means of the cross-component prediction mode, the accuracy of cross-component prediction is improved, and the encoding/decoding performance is improved. In addition, the filtering identifier of the current chroma block inherits the filtering identifier of the encoded/decoded block, and no additional bit consumption needs to be introduced to indicate the filtering identifier, thereby saving codewords and improving the encoding efficiency.

Anmelder

Firma

GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Land

🇨🇳 China