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1. (WO2018045108) METHOD AND SYSTEM FOR SIGNALING OF 360-DEGREE VIDEO INFORMATION

Pub. No.:    WO/2018/045108    International Application No.:    PCT/US2017/049495
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Aug 31 01:59:59 CEST 2017
IPC: H04N 19/597
H04N 19/46
H04N 19/167
G06T 15/04
H04N 19/117
Applicants: VID SCALE, INC.
Inventors: HANHART, Philippe
HE, Yuwen
YE, Yan
Title: METHOD AND SYSTEM FOR SIGNALING OF 360-DEGREE VIDEO INFORMATION
Abstract:
Coding techniques for 360-degree video are described. An encoder selects a projection format and maps the 360-degree video to a 2D planar video using the selected projection format. The encoder encodes the 2D planar video in a bitstream and further signals, in the bitstream, parameters identifying the projection format. The parameters identifying the projection format may be signaled in a video parameter set, sequence parameter set, and/or picture parameter set of the bitstream. Different projection formats that may be signaled include formats using geometries such as equirectangular, cubemap, equal-area, octahedron, icosahedron, cylinder, and user-specified polygon. Other parameters that may be signaled include different arrangements of geometric faces or different encoding quality for different faces. Corresponding decoders are also described. In some embodiments, projection parameters may further include relative geometry rotation parameters that define an orientation of the projection geometry.