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:
Apr. 23, 2024
Filed:
Apr. 30, 2020
Beijing Dajia Internet Information Technology Co., Ltd., Beijing, CN;
Xiaoyu Xiu, San Diego, CA (US);
Xiaoyu Xiu, San Diego, CA (US);
Yi-Wen Chen, San Diego, CA (US);
Xianglin Wang, San Diego, CA (US);
Shuiming Ye, San Diego, CA (US);
Tsung-Chuan Ma, San Diego, CA (US);
Hong-Jheng Jhu, Beijing, CN;
BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
A bit-width representation method of prediction refinement with optical flow (PROF), apparatus, and a non-transitory computer-readable storage medium are provided. The method includes obtaining a reference picture I associated with a video block within the video signal, obtaining prediction samples I(i,j) of the video block from a reference block in the reference picture I, controlling internal bit-widths of a PROF derivation process for various representation precisions of internal PROF parameters by applying right-shifting to the internal PROF parameters based on different bit-shift values, obtaining prediction refinement values for samples in the video block based on the PROF derivation process being applied to the video block based on the prediction samples I(i,j), and obtaining prediction samples of the video block based on the combination of the prediction samples and the prediction refinement values.