Image properties-based adaptive filtering method and device in image coding system
US10600156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2016 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Apr 26, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A restoring picture filtering method performed by a decoding device, according to the present invention, comprises the steps of: calculating the activity of an image of a target region of a restoring picture; determining the directivity of the image of the target region; selecting a particular filter within a filter set on the basis of the activity and the directivity; and performing filtering on the restoring picture on the basis of the selected filter. According to the present invention, adaptive filtering may be applied on the basis of image properties of a target block of a restoring picture, and the objective/subjective image quality of the restoring picture may be enhanced therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.