Title:
METHOD AND APPARATUS OF ENTROPY CODING FOR SUBPICTURES
Document Type and Number:
WIPO Patent Application WO/2024/041369
Kind Code:
A1
Abstract:
A method and apparatus of context initialization for entropy coding of subpictures. According to this method, previous context states for an arithmetic entropy coder are determined, where one or more context state buffers are used to store the previous context states for initializing the arithmetic entropy coder. When a subpicture coding tool is used for the current picture: initializing the arithmetic entropy coder using the previous context states stored in said one or more context state buffers is disabled; and the input data is encoded or decoded using the arithmetic entropy coder. In another embodiment, a video coder may only allow initialization of context states for entropy coding a current subpicture using the stored set of context states that is generated after entropy coding an inter slice corresponding to the same subpicture in a coded previous picture.
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Inventors:
HSIANG SHIH-TA (CN)
Application Number:
PCT/CN2023/111643
Publication Date:
February 29, 2024
Filing Date:
August 08, 2023
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/159; H04N19/13
Foreign References:
| US20190158837A1 | 2019-05-23 | |||
| US20050012648A1 | 2005-01-20 | |||
| US20130188700A1 | 2013-07-25 | |||
| US20180338144A1 | 2018-11-22 | |||
| US20210274182A1 | 2021-09-02 |
Other References:
PARK WOONSUNG; KIM MUNCHURL: "Deep Predictive Video Compression Using Mode-Selective Uni- and Bi-Directional Predictions Based on Multi-Frame Hypothesis", IEEE ACCESS, IEEE, USA, vol. 9, 21 December 2020 (2020-12-21), USA , pages 72 - 85, XP011829522, DOI: 10.1109/ACCESS.2020.3046040
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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