Split rendering for extended reality (XR) applications
US12182925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2020 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Oct 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method (20, 40) for reducing undesirable visual effects, such as judder, in a video image having one or more frames is disclosed. A server node (16) generates graphics layers from 3D objects, and augments the layers with the Z-layer information and motion information for the objects. The server node then groups (28, 30, 32) the graphics layers, encodes (34) the groups into a video stream such that every video frame of the stream is a composite video frame of the graphics layers, adds (36) the motion information to the composite video frame, and sends (38) the stream to a client device (18). Upon receipt, the client device extracts (44) the motion information, compensates the positions of the graphics layers using the Z-layer information and the motion information, and applies a selected positional time-warp algorithm to compensate for the translational and rotational movement of the user's head (50). The resultant layers are then combined into a video image and rendered (52) for the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.