Image decoding apparatus executing successive tile decoding and filtering around tile boundary
US9800874B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2014 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Oct 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For a decoding apparatus based on H.265/HEVC with single-core or single-threaded hardware not parallelized, which executes decoding a plurality of tiles and filtering around a tile boundary, the disclosed invention is intended to reduce the frequency of access to decoded data around the boundaries between tiles stored in a frame memory for filtering such data or reduce the circuit size of a buffer that retains decoded data around the boundaries between tiles. The image decoding apparatus disclosed herein executes decoding and filtering in raster scan order across a screen independently of the sizes and positional relations of tiles. At a tile boundary, decoding proceeds to a right adjacent tile on the same row, rather than decoding coding blocks on one row down in the same tile, and filtering is also executed using decoded data of row-wise adjacent coding blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.