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.

Date of Patent:
Nov. 11, 2025

Filed:

Feb. 20, 2024
Applicant:

Sharp Kabushiki Kaisha, Sakai, JP;

Inventors:

Yu-Chiao Yang, Taipei, TW;

Po-Han Lin, Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 19/159 (2014.01); H04N 19/117 (2014.01); H04N 19/124 (2014.01); H04N 19/157 (2014.01); H04N 19/176 (2014.01); H04N 19/52 (2014.01);
U.S. Cl.
CPC ...
H04N 19/117 (2014.11); H04N 19/124 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/52 (2014.11);
Abstract

A method of decoding a bitstream is provided. The method determines a block unit of an image frame of the bitstream. The method determines an intra prediction mode index of the block unit, which corresponds to one of multiple wide-angle candidate modes, each having an angle parameter. The method determines reference samples neighboring the block unit and whether the determined intra prediction mode index is equal to one of predefined indices each corresponding to one of predefined wide-angle modes in the wide-angle candidate modes. The method generates filtered samples based on the determined reference samples. The filtered samples are generated by a reference filter when the determined intra prediction mode index is equal to the one of the predefined indices. The method reconstructs the determined block unit based on the generated filtered samples along a mode direction of the determined intra prediction mode index.


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