Encoding and decoding method, apparatus, and device

US12041262B2 · kind B2 · utility

Assignee

• HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD. · CN

Inventor

• Fangdong CHEN · Hangzhou City, CN

Key dates

• Filing date: Jun 17, 2020
• Grant date: Jul 16, 2024
• Expiry date: Mar 31, 2041

Classification

• Technology area (CPC —): General

Abstract

An encoding and decoding method, apparatus, and device is disclosed. The method comprises: if characteristic information of a current block meets a specific condition, performing the following steps to acquire a target prediction value of the current block or a sub-block of the current block: determining a first original prediction value based on first unidirectional motion information of the current block, and determining a second original prediction value based on second unidirectional motion information of the current block; determining a horizontal velocity based on the first original prediction value and the second original prediction value; determining a vertical velocity based on the first original prediction value and the second original prediction value; acquiring a prediction compensation value based on the horizontal velocity and the vertical velocity; and acquiring the target prediction value based on the first original prediction value, the second original prediction value and the prediction compensation value.