Moving-image decoder using intra-prediction, moving-image decoding method using intra-prediction, moving-image encoder using intra-prediction, moving-image encoding method using intra-prediction, and computer readable recording medium
US11451771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jul 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A moving-image decoder includes a decoding means configured to decode a bitstream representing a moving image including a block encoded using intra-prediction, an inverse processing means configured to generate difference values in pixels of the block by inverse-quantizing and inverse-transforming a level value of the block obtained from a result of decoding, an intra-prediction means configured to generate predicted values of pixels of the block according to intra-prediction based on pixel values of reconstructed blocks around the block, and a reconstruction means configured to reconstruct the block on the basis of the generated difference values and the generated predicted values, wherein the intra-prediction means is configured to generate a reference line for use in the intra-prediction by synthesizing a plurality of lines of the reconstructed blocks around the block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.