Title:
DECODING METHOD, ENCODING METHOD, AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/036429
Kind Code:
A1
Abstract:
Disclosed in the present invention are a decoding method, an encoding method, and an apparatus, relating to the technical field of video encoding-decoding. The method comprises: acquiring a code stream of a current block; when the current block is determined to use scan region-based coefficient coding (SRCC), acquiring target position coordinate information from the code stream, the target position coordinate information consisting of a first coordinate value and a second coordinate value; for a coefficient that is to be decoded in a target scanning region of the current block, determining a context model for a flag bit to be decoded of the coefficient to be decoded, the target scanning region being a scanning region determined on the basis of the target position coordinate information, and the context model being determined at least on the basis of the target position coordinate information; and on the basis of the context model, decoding the flag bit to be decoded. In the present application, a context model for a flag bit to be decoded is determined by means of a target scanning region, causing such a grouping mode to be compatible with an SRCC-technology scanning mode, thus improving decoding performance.
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Inventors:
CAO XIAOQIANG (CN)
Application Number:
PCT/CN2020/096578
Publication Date:
March 04, 2021
Filing Date:
June 17, 2020
Export Citation:
Assignee:
HANGZHOU HIKVISION DIGITAL TEC (CN)
International Classes:
H04N19/13
Foreign References:
| CN110708552A | 2020-01-17 | |||
| CN1980395A | 2007-06-13 | |||
| CN103098469A | 2013-05-08 | |||
| EP3490253A1 | 2019-05-29 |
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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