Methods, devices and stream for encoding and decoding volumetric video
US11122294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2018 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Jul 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sequence of point clouds is encoded as a video by an encoder and transmitted to a decoder which retrieves the sequence of point clouds. Visible points of a point cloud are iteratively projected on projection maps according to at least two centers of projection, to determine a patch data item lists. One of the centers of projection is selected and corresponding image patches are generated and packed into a picture. Pictures and associated patch data item list are encoded in a stream. The decoding method decodes pictures and associated patch data item lists. Pixels of image patches comprised in pictures are un-projected according to data stored in associated patches. The methods have the advantage of encoding every point of point clouds in a manner avoiding artifacts and allowing decoding at video frame rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.