US 11,910,068 B2
Panoramic render of 3D video
Lin Fu, Shanghai (CN); and Hui Chen, Shanghai (CN)
Assigned to Shanghai Bilibili Technology Co., Ltd., Shanghai (CN)
Filed by Shanghai Bilibili Technology Co., Ltd., Shanghai (CN)
Filed on Nov. 3, 2021, as Appl. No. 17/517,970.
Application 17/517,970 is a continuation of application No. PCT/CN2020/084954, filed on Apr. 15, 2020.
Claims priority of application No. 201910523360.2 (CN), filed on Jun. 17, 2019.
Prior Publication US 2022/0060801 A1, Feb. 24, 2022
Int. Cl. G06F 3/048 (2013.01); G06F 3/01 (2006.01); H04N 21/81 (2011.01); H04N 19/597 (2014.01); H04N 13/139 (2018.01)
CPC H04N 21/816 (2013.01) [G06F 3/01 (2013.01); G06F 3/048 (2013.01); H04N 13/139 (2018.05); H04N 19/597 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A method, comprising:
reading video information of the three-dimension (3D) video to be rendered;
determining an image format of the 3D video according to the video information;
generating a first spherical model and a second spherical model according to the image format;
reading a frame image of the 3D video, wherein the frame image comprises a first sub-image and a second sub-image;
obtaining angle-of-view rotation data and image scaling data;
rendering the frame image according to the angle-of-view rotation data and the image scaling data, wherein the first sub-image is rendered to the first spherical model to obtain a first spherical image, and the second sub-image is rendered to the second spherical model to obtain a second spherical image; and
outputting images in a viewport area of the first spherical image and the second spherical image to a display device,
wherein the video information comprises a height and a width of the frame image, and the determining an image format of the 3D video comprises:
calculating a ratio of the height to the width;
in response to determining the ratio is 1:1, determining that the image format of the 3D video is an up-down format; and
in response to determining the ratio is 1:4, determining that the image format of the 3D video is a left-right format.