Invention Grant
- Patent Title: Encoder, a decoder and corresponding methods of chroma qantization control
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Application No.: US17547169Application Date: 2021-12-09
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Publication No.: US11863748B2Publication Date: 2024-01-02
- Inventor: Sergey Yurievich Ikonin , Roman Igorevich Chernyak , Timofey Mikhailovich Solovyev , Alexander Alexandrovich Karabutov , Elena Alexandrovna Alshina
- Applicant: HUAWEI TECHNOLOGIES CO., LTD.
- Applicant Address: CN Guangdong
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agency: HUAWEI TECHNOLOGIES CO., LTD.
- Priority: WO TRU2019000445 2019.06.21
- Main IPC: H04N19/124
- IPC: H04N19/124 ; H04N19/186 ; H04N19/196
Abstract:
A method of obtaining quantization parameter (QP) for chrominance components based on QP for luminance component, wherein the method is performed by a decoder or encoder, and wherein the method comprises obtaining a luminance QP for a luma component of a coding unit; obtaining a QP index (QPi) based at least in a part on the luminance QP; and obtaining a chrominance QP (QPc) for a chroma component of the coding unit based on the QP index by using a preset lookup table, wherein the maximum difference between the QP index and the chrominance QP is equal to 3.
Public/Granted literature
- US20220103822A1 ENCODER, A DECODER AND CORRESPONDING METHODS OF CHROMA QANTIZATION CONTROL Public/Granted day:2022-03-31
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