US 12,143,565 B2
Video coding using multi-resolution reference picture management
Xianglin Wang, San Diego, CA (US); Yi-Wen Chen, San Diego, CA (US); Yunfei Zheng, San Jose, CA (US); Xing Wen, San Jose, CA (US); Yucong Chen, Beijing (CN); and Yue Huang, Beijing (CN)
Assigned to BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD., Beijing (CN)
Filed by BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Dec. 31, 2021, as Appl. No. 17/566,965.
Application 17/566,965 is a continuation of application No. 16/706,675, filed on Dec. 6, 2019.
Claims priority of provisional application 62/776,997, filed on Dec. 7, 2018.
Prior Publication US 2022/0124317 A1, Apr. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/172 (2014.01); H04N 19/186 (2014.01); H04N 19/33 (2014.01); H04N 19/423 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/172 (2014.11); H04N 19/186 (2014.11); H04N 19/33 (2014.11); H04N 19/423 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A method of video encoding, comprising:
encoding a set of two or more pictures with at least a first spatial resolution and a second spatial resolution that is different from the first spatial resolution;
reconstructing the coded set of two or more pictures and storing the reconstructed set of two or more pictures in a picture buffer based on corresponding spatial resolutions;
obtaining a reference picture list comprising reconstructed pictures in at least the first spatial resolution and the second spatial resolution of the reconstructed set stored in the picture buffer;
predicting a picture that is subsequent to the set of two or more pictures based on the reference picture list without changing the corresponding spatial resolutions of the respective reconstructed pictures when a spatial resolution of the picture is different from a spatial resolution of a respective reconstructed picture to be used for predicting the picture; and
signaling a picture width and a picture height for each picture of the set of two or more pictures using a picture parameter set (PPS);
wherein the picture that is subsequent to the set of two or more pictures comprises a current picture to be coded with a third spatial resolution based on a reconstructed picture of the reference picture list, and wherein a ratio is determined based on the third spatial resolution and a spatial resolution of the reconstructed picture for coding the current picture.