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.

公开(公告)号：WO2020152045A1

公开(公告)日：2020-07-30

申请号：PCT/EP2020/051112

申请日：2020-01-17

Applicant: INTERDIGITAL CE PATENT HOLDINGS

Inventor： TAIBI, Charline ,  LEGALLAIS, Yvon ,  HOUDAILLE, Remi

IPC: H04N21/2343 ,  H04N21/845 ,  H04N21/44 ,  H04N21/442 ,  H04N21/6547 ,  H04N21/262

Abstract: A client (100) is able to manage a multimedia content in such a way that the buffering can be reduced as much as desired down to zero by selecting a representation for a next segment to be requested for which the first frame can be received at least in the frame duration.

公开(公告)号：WO2020002180A1

公开(公告)日：2020-01-02

申请号：PCT/EP2019/066577

申请日：2019-06-24

Applicant: INTERDIGITAL CE PATENT HOLDINGS

Inventor： LEGALLAIS, Yvon ,  SALMON-LEGAGNEUR, Charles ,  HOUDAILLE, Remi

IPC: H04N21/236 ,  H04N21/2365 ,  H04N21/442 ,  H04N21/6587 ,  H04N21/81 ,  H04N21/845 ,  H04N21/2343 ,  H04N21/4223 ,  H04N21/44 ,  H04N21/4402 ,  H04N21/4728

Abstract: A terminal adapted to receive an immersive video spatially tiled with a set of tiles is configured to request tiles depending on their intersection with a volume of vision associated with a user.

公开(公告)号：WO2019145296A1

公开(公告)日：2019-08-01

申请号：PCT/EP2019/051502

申请日：2019-01-22

Applicant: INTERDIGITAL CE PATENT HOLDINGS

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

IPC: G06F3/0481 ,  H04N5/232 ,  G06T15/20

CPC classification number: G06T19/20 ,  G06F3/04815 ,  G06F2203/04802 ,  G06T17/20 ,  G06T2219/2008

Abstract: A network equipment configured for tiling with a set of tiles a sphere representing a scene of a spherical immersive content,which comprises at least one memory (305) and at least one processing circuitry (304) configured to spatially split the scene of the spherical multimedia content with at least a first type of tiles and a second type of tiles.

公开(公告)号：WO2019063324A1

公开(公告)日：2019-04-04

申请号：PCT/EP2018/074961

申请日：2018-09-14

Applicant: INTERDIGITAL CE PATENT HOLDINGS

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

IPC: G06T15/20 ,  H04N21/43 ,  H04N21/218 ,  H04N21/2343 ,  H04N21/262 ,  H04N21/4728 ,  H04N21/845

CPC classification number: H04N21/43 ,  H04N21/21805 ,  H04N21/23439 ,  H04N21/26258 ,  H04N21/4728 ,  H04N21/8456

Abstract: A method for tiling with a set of tiles a sphere representing a spherical multimedia content, comprises: - obtaining (402) an altitude for each parallel line of the sphere comprising one or several centroids of the tiles, each tile being defined as a portion of the sphere covering a tile horizontal angular amplitude and a tile vertical angular amplitude; - obtaining (403) an angular position for each centroid of the tiles arranged on the parallel lines; - determining (404) transformations to be applied to a reference tile to obtain the tiles of the set of tiles, each of the transformations depending on the obtained altitude and angular position of the centroid of a corresponding tile to be obtained.

公开(公告)号：WO2021052799A1

公开(公告)日：2021-03-25

申请号：PCT/EP2020/074949

申请日：2020-09-07

Applicant: INTERDIGITAL CE PATENT HOLDINGS

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

IPC: H04N21/218 ,  H04N13/161 ,  H04N21/81 ,  H04N21/854 ,  H04N13/178 ,  H04N13/282 ,  H04N13/344

Abstract: Immersive 3D video content includes a plurality of preferably overlapping cells, each cell representative of a volume in the content, wherein a cell providing both content corresponding to a virtual central camera in the cell and parallax information from virtual peripheral cameras around the centre position can be next to a cell providing only parallax information to be used with the content corresponding to the virtual central camera. A device for rendering immersive video, renders a viewpoint corresponding to a user's current position, tracks and predicts the user position, and if the user position moves to a cell with central camera content, retrieves the content and parallax information, and if the user position moves to a cell with only parallax information, retrieves the parallax information and, if necessary, also the cell with the content. This arrangement can reduce bandwidth and storage for the immersive 3D video content.

公开(公告)号：WO2020114862A1

公开(公告)日：2020-06-11

申请号：PCT/EP2019/082775

申请日：2019-11-27

Applicant: INTERDIGITAL CE PATENT HOLDINGS

Inventor： LEGALLAIS, Yvon ,  TAIBI GUGUEN, Charline ,  HOUDAILLE, Remi

IPC: H04L29/06 ,  H04L29/08

Abstract: During the delivery of a sequence of packets from a server to a client device, when an expiration time associated with an initial payload of a data packet belonging to a sliding window for delivery is reached without reception of a corresponding acknowledgment from the device, the server (300) resends the data packet with a new payload corresponding to the initial payload of a next data packet to be transmitted through the sliding window.