Apparatus and method for image encoding/decoding using predictability of intra-prediction mode
US9374584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for decoding a video, includes: a mode information extractor to extract mode information on an intra-prediction mode of a current block from encoded data; a prediction mode determiner to determine a candidate intra-prediction mode selected from a plurality of candidate intra-prediction modes as the intra-prediction mode of the current block, when the mode information indicates a first encoding mode; a prediction mode extractor to determine the intra-prediction mode of the current block by using a prediction mode identifier, when the mode information indicates a second encoding mode and includes the prediction mode identifier; and a decoder to decode the encoded data to produce a residual block, and reconstruct the current block by adding the produced residual block to a prediction block predicted based on the intra-prediction mode of the current block determined by either the prediction mode determiner or the prediction mode extractor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.