公开(公告)号：WO2023059730A1

公开(公告)日：2023-04-13

申请号：PCT/US2022/045796

申请日：2022-10-05

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： GUDUMASU, Srinivas ,  HAMZA, Ahmed

IPC: H04N21/81 ,  G06T9/00 ,  H04N21/854 ,  H04N19/597 ,  G06T9/40 ,  H04N19/103 ,  H04N21/262 ,  H04N21/845 ,  G06T9/001 ,  H04N21/26258 ,  H04N21/816 ,  H04N21/8456 ,  H04N21/85406

Abstract: Media content may be adaptively (for example, selectively or partially) streamed based on temporal levels. The temporal levels may be indicated in a media content manifest (for example, a media presentation description (MPD)). For example, media samples for geometry-based point cloud compression (G-PCC) media content may be divided into temporal levels associated with temporal level identifiers. An MPD may indicate one or more adaptation sets associated with G-PCC media content. An adaptation set may be selected from multiple adaptation sets, A representation set may be determined from the selected adaptation set. An indication of a G-PCC descriptor associated with a representation of the representation set may be obtained from the MPD. Temporal levels present in the representation may be identified using the G-PCC descriptor, which may include a set of temporal level identifiers, The representation may be selected based on the G-PCC descriptor.

公开(公告)号：WO2022150376A1

公开(公告)日：2022-07-14

申请号：PCT/US2022/011298

申请日：2022-01-05

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： HAMZA, Ahmed ,  GUDUMASU, Srinivas

IPC: H04N21/81 ,  H04N21/218 ,  H04N21/414 ,  G06T19/00 ,  G06T15/00

Abstract: Methods, systems, and apparatuses for streaming of visual volumetric video-based coding (V3C) media and geometry-based point cloud coding (G-PCC) media are described herein. A method implemented in a receiving device may include receiving one or more of a first message including a list of media assets that are available to be streamed from the sending device, or one or more messages respectively describing the media assets. The method may further include sending a second message indicating a request for a subset of the media assets to be streamed from the sending device. The requested subset of the media assets may be determined based on a viewport of the receiving device. The method may further include receiving Motion Picture Experts Group (MPEG) Media Transport Protocol (MMTP) packets and processing the packets to recover at least a portion of the requested subset of the media assets.

公开(公告)号：WO2021262623A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038334

申请日：2021-06-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： GUDUMASU, Srinivas ,  HAMZA, Ahmed

IPC: H04N21/81 ,  H04N21/845 ,  H04N21/8543 ,  H04N21/262 ,  H04N21/4728 ,  H04N21/26258 ,  H04N21/816 ,  H04N21/8456

Abstract: Systems, methods, and instrumentalities are disclosed for receiving content related to geometry-based point clouds. A client device may receive a media presentation description (MPD) file from a content server, A set of pre-selection elements may be identified from the MPD file. One or more adaptation sets associated with at least one pre-selection element of the set of pre-selection elements may be identified. The adaptation set(s) may be indicated by an attribute associated with one of the pre-selection elements. A geometry-based point cloud compression (GPCC) tile identifier associated with a viewport may be determined. The GPCC tile identifier may be determined based on a first descriptor received in the MPD file. One or more adaptation sets associated with the GPCC tile identifier may be selected using a second descriptor. A point cloud component associated with the selected one or more adaptation sets may be requested. Point cloud component may be received.