Title:
ADAPTIVE LOOP FILTER WITH CASCADE FILTERING
Document Type and Number:
WIPO Patent Application WO/2024/032725
Kind Code:
A1
Abstract:
A method for performing cascade filtering in an adaptive loop filter (ALF) of a video coder is provided. The video coder receives a current sample at a current pixel position of a current picture of a video. The video coder applies first filter comprising a plurality of filter taps. The current sample and neighboring samples taken from pixel positions near the current sample are used as tap inputs to the plurality of filter taps of the first filter. The video coder applies a second filter comprising at least one filter tap. A first output of the first filter is used to generate a tap input to the at least one filter tap of the second filter. The video coder updates the current sample based on a second output of the second filter. The video coder reconstructs the current picture based on the updated current sample.
Inventors:
CHIU SHIH-CHUN (CN)
HSIAO YU-LING (CN)
LIN YU-CHENG (CN)
HSU CHIH-WEI (CN)
CHEN CHING-YEH (CN)
CHUANG TZU-DER (CN)
CHEN YI-WEN (US)
HUANG YU-WEN (CN)
HSIAO YU-LING (CN)
LIN YU-CHENG (CN)
HSU CHIH-WEI (CN)
CHEN CHING-YEH (CN)
CHUANG TZU-DER (CN)
CHEN YI-WEN (US)
HUANG YU-WEN (CN)
Application Number:
PCT/CN2023/112271
Publication Date:
February 15, 2024
Filing Date:
August 10, 2023
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/82
Foreign References:
| US20210021818A1 | 2021-01-21 | |||
| CN113597762A | 2021-11-02 | |||
| CN114391252A | 2022-04-22 | |||
| US20190182482A1 | 2019-06-13 | |||
| US20210160513A1 | 2021-05-27 |
Other References:
L. ZHANG (BYTEDANCE), K. ANDERSSON (ERICSSON), C.-Y. CHEN (MEDIATEK): "CE2: Summary Report on In-Loop Filters", 11. JVET MEETING; 20180711 - 20180718; LJUBLJANA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), 8 July 2018 (2018-07-08), XP030199076
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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