Title:
ENCODING METHOD, DECODING METHOD, CODE STREAM, ENCODER, DECODER, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/077569
Kind Code:
A1
Abstract:
Disclosed in embodiments of the present application are an encoding method, a decoding method, a code stream, an encoder, a decoder, and a storage medium. A method comprises: determining a first color component block of the current block; if a prediction mode of the first color component block is an IBC mode, determining a first block vector parameter of the first color component block; determining a target block vector parameter of a second color component of the current block according to the first block vector parameter of the first color component block; and performing prediction processing in an IBC extension mode on the second color component of the current block according to the target block vector parameter to determine a predicted value of the second color component of the current block. In this way, the accuracy of chroma prediction can be improved, so that the encoding/decoding efficiency can be improved.
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Inventors:
HUO JUNYAN (CN)
MA YANZHUO (CN)
YANG FUZHENG (CN)
HAO XUE (CN)
LI MING (CN)
MA YANZHUO (CN)
YANG FUZHENG (CN)
HAO XUE (CN)
LI MING (CN)
Application Number:
PCT/CN2022/125208
Publication Date:
April 18, 2024
Filing Date:
October 13, 2022
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H04N19/159; H04N19/61; H04N19/96
Foreign References:
| US20220007034A1 | 2022-01-06 | |||
| US20200120353A1 | 2020-04-16 | |||
| US20220295101A1 | 2022-09-15 | |||
| US20220078410A1 | 2022-03-10 |
Other References:
W. ZHU (BYTEDANCE), L. ZHANG (BYTEDANCE), J. XU (BYTEDANCE), K. ZHANG (BYTEDANCE): "CE8-related: Signalling of chroma IBC prediction modes", 15. JVET MEETING; 20190703 - 20190712; GOTHENBURG; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 26 June 2019 (2019-06-26), XP030219917
H. YANG (INTERDIGITAL), Y. HE (INTERDIGITAL): "CE8-related: 4x4 sub-block based dual-tree chroma IBC block-vector derivation", 15. JVET MEETING; 20190703 - 20190712; GOTHENBURG; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 5 July 2019 (2019-07-05), XP030220265
H. YANG (INTERDIGITAL), Y. HE (INTERDIGITAL): "CE8-related: 4x4 sub-block based dual-tree chroma IBC block-vector derivation", 15. JVET MEETING; 20190703 - 20190712; GOTHENBURG; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 5 July 2019 (2019-07-05), XP030220265
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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