Image decoding method, image coding method, image decoding apparatus, image coding apparatus, and image coding and decoding apparatus
US9363525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2012 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Jul 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is “no_residual_data_flag”.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.