Data processing method and apparatus
US12160585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2023 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Jul 7, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of this disclosure provide a data processing method and apparatus. The method includes: acquiring M candidate quantized state chains of a transform block in multimedia data; acquiring N syntax elements corresponding to a transform coefficient i in the transform block, and acquiring fixed probability models respectively corresponding to K syntax elements; performing context modeling for (N-K) syntax elements according to adjacent coding coefficients of the transform coefficient i, to obtain target probability models respectively corresponding to the (N-K) syntax elements; determining a coefficient rate distortion cost of the transform coefficient i according to the fixed probability models, the target probability models, and a quantization reconstruction value of the transform coefficient i; and determining path rate distortion costs respectively corresponding to the M candidate quantized state chains according to a coefficient rate distortion cost of each transform coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.