Optimization of constrained directional enhancement filtering (CDEF)
US12348789B1 · kind B1 · utility
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20Claims
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Key dates
| Filing date | Jun 15, 2022 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Jan 2, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video to be encoded using a codec is received Pre-filter encoding of a specific frame of the video is performed. In a single-pass processing of the specific frame, frame-level filter parameters determined using a previous frame are used to apply an in-loop filter on blocks of the specific frame during encoding of the specific frame. Statistics for the specific frame are gathered for determining frame-level filter parameters to be used for a future frame of the video. Post-filter encoding of the specific frame of the video is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.