Invention Grant
- Patent Title: Methods and apparatuses for encoding and decoding video using signal dependent adaptive quantization
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Application No.: US17145531Application Date: 2021-01-11
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Publication No.: US11523116B2Publication Date: 2022-12-06
- Inventor: Chong Soon Lim , Takahiro Nishi , Tadamasa Toma
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack L.L.P.
- Main IPC: H04N19/124
- IPC: H04N19/124 ; H04N19/18 ; H04N19/46 ; H04N19/126 ; H04N19/14 ; H04N19/159 ; H04N19/61 ; H04N19/91
Abstract:
The encoding method includes: inverse-quantizing one or more first transform coefficients quantized; deriving a quantization parameter based on the one or more first transform coefficients inverse-quantized; and inverse-quantizing a second transform coefficient quantized, based on the derived quantization parameter.
Public/Granted literature
- US20210136379A1 METHODS AND APPARATUSES FOR ENCODING AND DECODING VIDEO USING SIGNAL DEPENDENT ADAPTIVE QUANTIZATION Public/Granted day:2021-05-06
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