Apparatus for encoding and decoding a video signal and apparatus for transmitting image data
By configuring a quadratic transform set and intra-frame prediction mode, and applying 8×8 and 4×4 transform kernels, the challenge of efficiently processing next-generation video content was addressed, improving coding efficiency and image quality.
CN116320413BActive Publication Date: 2025-12-09GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
Patent Information
- Application Number
- CN202310307855.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2018-07-02
- Filing Date
- 2019-07-02
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2039-07-02
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Figure CN116320413B_ABST
Abstract
Apparatuses for coding and decoding video signals and apparatuses for transmitting data of images. The invention provides a method of decoding a video signal, the method comprising the steps of generating a dequantized transform block by performing dequantization on a current block; obtaining an intra prediction mode of the current block; determining a set of secondary transforms applied to the current block from a plurality of sets of secondary transforms based on the intra prediction mode; deriving a transform kernel of the determined set of secondary transforms applied to the current block; and performing a secondary transform on a specific region of the top-left of the dequantized transform block by using the derived transform kernel.
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Citation Information
Patent Citations
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