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CE2-related: CTU Based Adaptive Loop Filtering
Abstract
In this contribution, additional mode for the adaptive loop filter in BMS is proposed. In this mode, selection of the set of filters is done for each CTU. Test results reportedly show 3.10%, 4.96%, 4.31% luma gain for AI, RA, and LB configurations respectively comparing to VTM-1.0 anchor. Additional results with low-delay ALF encoder, where the filters used for the current picture are derived from the previous coded pictures, show 3.05%, 4.72%, 4.16% luma gain for AI, RA, and LB configurations comparing to VTM-1.0 anchor.
JVET-K0382 CE2-related: CTU Based Adaptive Loop Filtering [M. Karczewicz, A. Gadde, N. Hu, V. Seregin (Qualcomm)]
In this contribution, additional mode for the adaptive loop filter in BMS is proposed. In this mode, selection of the set of filters is done for each CTU. Test results reportedly show 3.10%, 4.96%, 4.31% luma gain for AI, RA, and LB configurations respectively comparing to VTM-1.0 anchor. Additional results with low-delay ALF encoder, where the filters used for the current picture are derived from the previous coded pictures, show 3.05%, 4.72%, 4.16% luma gain for AI, RA, and LB configurations comparing to VTM-1.0 anchor.
Beneficial for low latency encoding. Further study in a CE, compared to an equivalent low latency mode with the current ALF (determining coefficients from previous picture, and switching filter on/off at CTU level.)
PATENTS:
EP3959891B1
1.00
2024-02-21
US11451773B2
1.00
2022-09-20
ES3053322T3
1.00
2026-01-21
EP3970379B1
1.00
2023-07-05
US20190306502A1
1.00
2019-10-03
US10057574B2
0.92
2018-08-21
EP3459245B1
0.26
2022-07-27
US10708591B2
0.24
2020-07-07
Decisions
Beneficial for low latency encoding. Further study in a CE, compared to an equivalent low latency mode with the current ALF (determining coefficients from previous picture, and switching filter on/off at CTU level.)
Citation