Patent · US Active

Encoder, a decoder and corresponding methods using intra block copy (IBC) dedicated buffer and default value refreshing for luma and chroma component

US11463709B2 · kind B2 · utility

3Cited by

0References

13Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Han Gao · San Diego, US
Semih Esenlik · Munich, DE
Biao Wang · Lo Wu, CN
Anand Meher Kotra · Munich, DE
Jianle Chen · San Diego, US

Key dates

Filing date	Jan 4, 2021
Grant date	Oct 4, 2022
Priority date	—
Expiry date	Jan 4, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/96
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method of coding implemented by a decoding device, comprising initializing a dedicated buffer for intra block copy (IBC) referencing, when a current coding tree unit (CTU) to be decoded is a first CTU of a CTU row, determining whether a current block in the current CTU is predicted using IBC mode, obtaining an IBC block vector for the current block when the current block is predicted using IBC mode, and obtaining predicted sample values for the current block, based on reference samples from the dedicated buffer and the IBC block vector for the current block.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.