Video encoding device, video decoding device, video encoding method, video decoding method, and program
US10021385B2 · kind B2 · utility
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Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jul 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video encoding device includes a planar prediction unit using planar prediction, and a noise injecting unit for injecting pseudo-random noise into a prediction image of a planar prediction block when a reconstructed prediction error value for planar prediction is less than a threshold determined by the size of the planar prediction block. The video encoding device then uses the pseudo-random noise in linear interpolation for calculating the prediction image, based on the conditions under which a gradient distortion occurs, to suppress the gradient distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.