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:
Oct. 21, 2025
Filed:
Jul. 19, 2023
Zoom Video Communications, Inc., San Jose, CA (US);
Yi Guo, Hangzhou, CN;
Zhichu He, Hangzhou, CN;
Rui Li, Hangzhou, CN;
Bo Ling, Saratoga, CA (US);
Jing Wu, Hangzhou, CN;
Minxia Yang, Hangzhou, CN;
Shiyan Zhang, Hangzhou, CN;
Yichen Zhang, Hangzhou, CN;
Zoom Communications, Inc., San Jose, CA (US);
Abstract
Fast parameter search for chroma from luma (CFL) intra prediction in video encoding is provided. A video encoder determines a value of a parameter of a linear CFL predictor for a coding block of a frame of a video. The determining includes dividing a search range within a value range of the parameter into three portions by a starting value: the starting value and values on two sides of the starting value. The encoder determines cost values of parameter values from the three portions and select the value of the parameter that corresponds to the lowest cost value. The encoder further encodes the coding block of the frame into a bitstream representing the video using the CFL predictor with the selected value of the parameter.