Encoding device, decoding device, encoding method, and decoding method
US10848760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Mar 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoding device which further improves coding technique includes processing circuitry and memory. By using the memory, the processing circuitry: performs filtering on a pixel value of a current reference sample to be processed included in reference samples located on a left of or above a current block to be predicted, using pixel values of the reference samples; generates a prediction image by performing intra prediction using the filtered pixel value of the current reference sample. When performing the filtering, the processing circuitry: determines a weight for each reference sample, based on a distance between the reference sample and the current reference sample and a difference in pixel value between the same; and performs filtering on the pixel value of the current reference sample by weighted addition using each of the pixel values of the reference samples and the weight determined for each reference sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.