Image coding device and image decoding device
US8849049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | May 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To provide an image coding device having high coding efficiency and an image decoding device. A plurality of prediction procedures that uses various types of correlations between pixels are adaptively applied with a coded signal as a reference. With respect to an input pixel, first residual and prediction information are obtained by a first prediction unit that carries out in-screen prediction and the like, second residual and prediction information are obtained by a second prediction unit for predicting a first residual as a serial additional process, and third residual and prediction information are obtained by a third prediction unit for directly predicting a pixel to be coded as a parallel additional process on the input pixel. Which of either the second residual or the third residual to code is determined based on the coding cost, and the signal is switched in the first switching unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.