Invention Grant
- Patent Title: Encoder, a decoder and corresponding methods using intra block copy (IBC) dedicated buffer and default value refreshing for luma and chroma component
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Application No.: US17141147Application Date: 2021-01-04
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Publication No.: US11463709B2Publication Date: 2022-10-04
- Inventor: Han Gao , Semih Esenlik , Biao Wang , Anand Meher Kotra , Jianle Chen
- Applicant: HUAWEI TECHNOLOGIES CO., LTD.
- Applicant Address: CN Shenzhen
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agent Gregg L. Jansen
- Priority: WOPCT/EP2019/065540 20190613
- Main IPC: H04N19/159
- IPC: H04N19/159 ; H04N19/105 ; H04N19/139 ; H04N19/176 ; H04N19/96
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.
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