Picture encoding method, picture decoding method, picture encoding apparatus, picture decoding apparatus, picture encoding program, and picture decoding program
US9491455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2012 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Feb 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/33
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The encoding computational complexity and the decoding computational complexity are reduced while suppressing deterioration of coding efficiency in comparison with conventional intra divided-picture coding. A divided picture generation unit divides an input encoding target picture into blocks having the same size, and collects pixels having the same relative position in the blocks to generate divided pictures having the same size. An intra divided-picture encoding unit performs intra divided-picture encoding on some divided pictures. A reference picture selection unit selects, as a reference picture, an encoded divided picture in which a pixel position on an original picture is close in order to encode the other encoding target divided pictures. An inter divided-picture predictive encoding unit generates a predicted picture using the selected reference picture and encodes an encoding target divided picture through inter divided-picture prediction in units of divided pictures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.