- 专利标题： 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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申请号： US17141147申请日： 2021-01-04
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公开(公告)号： US11463709B2公开(公告)日： 2022-10-04
- 发明人: Han Gao , Semih Esenlik , Biao Wang , Anand Meher Kotra , Jianle Chen
- 申请人： HUAWEI TECHNOLOGIES CO., LTD.
- 申请人地址： CN Shenzhen
- 专利权人： HUAWEI TECHNOLOGIES CO., LTD.
- 当前专利权人： HUAWEI TECHNOLOGIES CO., LTD.
- 当前专利权人地址： CN Shenzhen
- 代理商 Gregg L. Jansen
- 优先权： WOPCT/EP2019/065540 20190613
- 主分类号： H04N19/159
- IPC分类号： H04N19/159 ; H04N19/105 ; H04N19/139 ; H04N19/176 ; H04N19/96
摘要：
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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