公开(公告)号：WO2021249812A1

公开(公告)日：2021-12-16

申请号：PCT/EP2021/064567

申请日：2021-05-31

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： LE ROUX, Jean ,  SALMON-LEGAGNEUR, Charles ,  LEGALLAIS, Yvon ,  AUMONT, Franck

IPC: H04N19/597 ,  H04N21/218 ,  H04N21/2343 ,  H04N19/46 ,  H04N5/232 ,  H04N21/81 ,  H04N13/161 ,  H04N21/234 ,  H04N21/235 ,  H04N21/84 ,  H04N13/261 ,  H04N21/21805 ,  H04N21/23412 ,  H04N21/234318 ,  H04N21/2353 ,  H04N21/816

Abstract: Methods, devices and stream are disclosed to encode and decode a volumetric content. At the encoding, the space of the volumetric content is divided in distinct sectors according to at least two different sectorizations. One atlas is generated for each sectorization or a single atlas is generated encoding all the sectorizations. At the decoding, a sectorization is selected according to the current direction and field of view, according to user's gaze navigation and according to prediction of the upcoming pose of the virtual camera controlled by the user. Sectors are selected according the selected sectorization and the current direction and field of view and only patches encoded in regions of the atlas associated with these sectors are accessed to generate the viewport image representative of the content seen from the current point of view.