Video encoding method, video decoding method, video encoding apparatus, video decoding apparatus, and programs thereof
US9609318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2011 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jul 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/59
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reduction in residual energy of inter-frame prediction with motion compensation and improvement in encoding efficiency are achieved by using a region-dividing type adaptive interpolation filter that takes an edge property of a picture into consideration. An edge calculation unit calculates edge information from reference picture data designated by a motion vector. A region dividing unit divides an encoding target frame into a plurality of regions that are units to which interpolation filters are adaptively applied based on the edge information. A filter coefficient optimizing unit optimizes an interpolation filter for a fractional-accuracy pixel for each of the regions. A reference picture interpolating unit interpolates the fractional-accuracy pixel of a reference picture using the optimized interpolation filter, and a predictive encoding unit performs predictive encoding using motion compensation of fractional-accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.