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.:
Date of Patent:
Dec. 12, 2023
Filed:
Sep. 15, 2021
Beijing Dajia Internet Information Technology Co., Ltd., Beijing, CN;
BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
The present disclosure relates to a bit-width control method of bi-directional optical flow (BDOF) for coding a video signal. The method includes obtaining a first reference picture Iand a second reference picture Iassociated with a video block, obtaining first prediction samples I(i,j) of the video block from a reference block in the first reference picture I, obtaining second prediction samples I(i,j) of the video block from a reference block in the second reference picture I, controlling internal bit-widths of the BDOF by deriving internal bit-widths of intermediate parameters, obtaining motion refinements for samples in the video block based on the BDOF being applied to the video block based on the first prediction samples I(i,j) and the second prediction samples I(i,j), and obtaining bi-prediction samples of the video block based on the motion refinements.