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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11838557 B1

PDFFull Text
Date of Patent:
Dec. 05, 2023

Filed:

Apr. 22, 2022

Methods and apparatuses of alf derivation in video encoding system

Applicant:

Mediatek Inc., Hsinchu, TW;

Inventors:

Shih-Chun Chiu, Hsinchu, TW;

Chih-Wei Hsu, Hsinchu, TW;

Ching-Yeh Chen, Hsinchu, TW;

Chun-Chia Chen, Hsinchu, TW;

Tzu-Der Chuang, Hsinchu, TW;

Yu-Wen Huang, Hsinchu, TW;

Assignee:

MEDIATEK INC., Hsinchu, TW;

Attorney:

McClure, Qualey & Rodack, LLP

Primary Examiner:

Md N Haque

Int. Cl.
CPC ...
H04N 19/82 (2014.01); H04N 19/117 (2014.01); H04N 19/124 (2014.01); H04N 19/186 (2014.01); H04N 19/147 (2014.01);
U.S. Cl.
CPC ...
H04N 19/82 (2014.11); H04N 19/117 (2014.11); H04N 19/124 (2014.11); H04N 19/147 (2014.11); H04N 19/186 (2014.11);
Abstract

Video encoding methods and apparatuses include receiving reconstructed video samples, determining an initial clipping setting for ALF coefficients, deriving clipping setting candidates from the initial clipping setting. ALF coefficients for the initial clipping setting and the clipping setting candidates are derived by solving inverse matrices, where partial intermediate results of solving ALF coefficients are shared by two or more clipping settings. A distortion value corresponds to the derived ALF coefficients for each clipping setting is computed, and final clipping indices for final ALF coefficients are determined according to the distortion values. ALF filtering is applied to the reconstructed video samples based on the final ALF coefficients and the final clipping indices.

Find Patent Forward Citations

Chiu, Shih-Chun. (2023). Methods and apparatuses of alf derivation in video encoding system (U.S. Patent No. 11838557). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11838557

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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