Image encoding / decoding apparatus and apparatus for transmitting bitstream
By adopting BDPCM technology in the image decoding method, predicted samples and residual samples are derived, and intra prediction modes in the prediction direction are stored, the problem of low encoding and decoding efficiency of high-resolution images is solved, and more efficient image transmission and storage is achieved.
CN119544969APending Publication Date: 2025-02-28NOKIA TECHNOLOGIES OY
View PDF -1 Cites 0 Cited by
Patent Information
- Application Number
- CN202411891885.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2019-05-22
- Filing Date
- 2020-05-22
- Publication Date
- 2025-02-28
Smart Images
Figure 00000000_0000_ABST
Abstract
The present disclosure relates to an image encoding / decoding apparatus and an apparatus for transmitting a bitstream. An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving prediction samples of a first sample and a second sample of a current block on the basis of BDPCM-related information on the current block and neighboring samples of the current block; deriving a residual sample of the first sample and the second sample based on the residual coefficient of the first sample and the modified residual coefficient of the second sample; and storing, as the intra prediction mode of the current block, an intra prediction mode in the prediction direction of the current block derived on the basis of the BDPCM direction flag.
Need to check novelty before this filing date? Find Prior Art