公开(公告)号：US12301645B2

公开(公告)日：2025-05-13

申请号：US16938125

申请日：2020-07-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Yuqun Fan ,  Peiyun Di

IPC: H04N21/65 ,  H04L65/65 ,  H04N21/218 ,  H04N21/235 ,  H04N21/81 ,  H04N21/845

Abstract: A method mechanism for streaming multi-viewpoint virtual reality (VR) content via Dynamic Adaptive Streaming over Hypertext Transfer Protocol (HTTP) (DASH) is disclosed. The mechanism includes receiving media content including a VR video sequence. A DASH Media Presentation Description (MPD) is generated. The MPD includes an indication specifying that a portion of the media content that is related to a first viewpoint is associated with a timed metadata representation. A request is received from a client for the media content. The DASH MPD, including the indication, is transmitted to the client in response to receiving the request to support communication of the media content to the client.

公开(公告)号：US20240276074A1

公开(公告)日：2024-08-15

申请号：US18419305

申请日：2024-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Yuqun Fan ,  Peiyun Di

IPC: H04N21/81 ,  H04N21/218 ,  H04N21/2343 ,  H04N21/84

CPC classification number: H04N21/816 ,  H04N21/21805 ,  H04N21/2343 ,  H04N21/84

Abstract: A method comprises obtaining media content associated with a first viewpoint and a second viewpoint, wherein a first position of the first viewpoint is static and a second position of the second viewpoint is dynamic; generating a first VWPT descriptor based on the media content and describing the first viewpoint; generating a second VWPT descriptor based on the media content and describing the second viewpoint; generating an MPD comprising the first VWPT descriptor and the second VWPT descriptor; and transmitting the MPD.

公开(公告)号：US20230038287A1

公开(公告)日：2023-02-09

申请号：US17959088

申请日：2022-10-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  G06T19/00 ,  H04N19/13 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/159

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video sequence into a plurality of sub-picture video sequences. The mechanism further includes encoding the plurality of sub-picture video sequences as sub-picture bitstreams to support merging of the plurality of sub-picture bitstreams, the encoding ensuring that each sub-picture bitstream is self-referenced and two or more of the sub-picture bitstreams can be merged to generate a single video bitstream using a lightweight bitstream rewriting process that does not involve changing of any block-level coding results. A mergeable indication is encoded to indicate that the sub-picture bitstream containing the indication is compatible with a multi-bitstream merge function for reconstruction of the spherical video sequence. A set of the sub-picture bitstreams and the mergeable indication are transmitted toward the decoder to support decoding and displaying a virtual reality video viewport.

公开(公告)号：US11490075B2

公开(公告)日：2022-11-01

申请号：US17061416

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70 ,  G06T9/00 ,  H04N19/176 ,  G06T19/00

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video sequence into a plurality of sub-picture video sequences. The mechanism further includes encoding the plurality of sub-picture video sequences as sub-picture bitstreams to support merging of the plurality of sub-picture bitstreams, the encoding ensuring that each sub-picture bitstream is self-referenced and two or more of the sub-picture bitstreams can be merged to generate a single video bitstream using a lightweight bitstream rewriting process that does not involve changing of any block-level coding results. A mergable indication is encoded to indicate that the sub-picture bitstream containing the indication is compatible with a multi-bitstream merge function for reconstruction of the spherical video sequence. A set of the sub-picture bitstreams and the mergable indication are transmitted toward the decoder to support decoding and displaying a virtual reality video viewport.

公开(公告)号：US11438645B2

公开(公告)日：2022-09-06

申请号：US17038744

申请日：2020-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuqun Fan ,  Peiyun Di ,  Fuzheng Yang

IPC: H04N21/438 ,  H04N21/4402 ,  H04N21/6587 ,  H04N21/84 ,  H04N21/845

Abstract: A media information processing method includes obtaining media description information, where the media description information includes description information of at least two bitstreams corresponding to a first picture area, any one of the at least two bitstreams has an access point different in time from an access point of another bitstream in the at least two bitstreams, the at least two bitstreams are bitstreams obtained by separately encoding picture content of the first picture subarea, and time periods corresponding to the picture content separately encoded by the at least two bitstreams overlap, and determining, based on the media description information, a to-be-played first target bitstream, where the first target bitstream is one of the at least two bitstreams.

公开(公告)号：US20210344903A1

公开(公告)日：2021-11-04

申请号：US17370120

申请日：2021-07-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lu Yu ,  Ye-Kui Wang ,  Hualong Yu ,  Yin Zhao ,  Yuqun Fan ,  Xiaoding Gao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/46 ,  H04N19/184 ,  H04N19/172

Abstract: A video encoding method, a video decoding method, an apparatus, a device, and a storage medium include parsing a first flag from the video bitstream when a video bitstream is allowed to be decoded by referencing a library picture corresponding to a library picture bitstream, using a value of a target parameter of the video bitstream as a value of a target parameter of the library picture bitstream referenced by the video bitstream when a value of the first flag is a first value, and reconstructing, based on the value of the target parameter of the library picture bitstream referenced by the video bitstream and the library picture bitstream referenced by the video bitstream to obtain the library picture corresponding to the library picture bitstream referenced by the video bitstream.

公开(公告)号：US11032570B2

公开(公告)日：2021-06-08

申请号：US16373640

申请日：2019-04-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuqun Fan ,  Ye-Kui Wang

IPC: H04N19/597 ,  H04N19/167 ,  H04N13/178 ,  H04N13/161

Abstract: This application provides a media data processing method and apparatus. A media processing device receives a media stream. The media stream includes media data recorded at a plurality of viewpoints. The device obtains metadata information of the media stream. The metadata information includes viewpoint identification information of the viewpoints. The device displays media data of a first viewpoint based on the viewpoint identification information. The device also displays indications of other viewpoints when displaying the media data of the first viewpoint, so that a user of the device can switch to display media data of other viewpoints.

公开(公告)号：US20210021849A1

公开(公告)日：2021-01-21

申请号：US17061405

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/597 ,  H04N19/13 ,  H04N19/436 ,  H04N19/172 ,  H04N19/167 ,  H04N19/139

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video signal, stitched from multiple directional video signals, into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals are encoded as a plurality of sub-picture bitstreams. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks to be compatible with a multi-bitstream merge function for reconstruction of the spherical video signal. A track level mergable indication is encoded within a track level box for the sub-picture tracks, which indicates the sub-picture tracks are compatible with the multi-bitstream merge function for reconstruction of the spherical video signal.

公开(公告)号：US20210021814A1

公开(公告)日：2021-01-21

申请号：US17061416

申请日：2020-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang ,  Huameng Fang ,  Yuqun Fan ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/46 ,  H04N19/70 ,  H04N19/597 ,  H04N19/176 ,  G06T9/00 ,  G06T19/00

Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes mapping a spherical video sequence into a plurality of sub-picture video sequences. The mechanism further includes encoding the plurality of sub-picture video sequences as sub-picture bitstreams to support merging of the plurality of sub-picture bitstreams, the encoding ensuring that each sub-picture bitstream is self-referenced and two or more of the sub-picture bitstreams can be merged to generate a single video bitstream using a lightweight bitstream rewriting process that does not involve changing of any block-level coding results. A mergable indication is encoded to indicate that the sub-picture bitstream containing the indication is compatible with a multi-bitstream merge function for reconstruction of the spherical video sequence. A set of the sub-picture bitstreams and the mergable indication are transmitted toward the decoder to support decoding and displaying a virtual reality video viewport.

公开(公告)号：US10028289B2

公开(公告)日：2018-07-17

申请号：US14971447

申请日：2015-12-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Zhou ,  Yuqun Fan ,  Weihua Qiao

IPC: H04W72/08 ,  H04W28/24 ,  H04L29/06 ,  H04L12/26 ,  H04L12/801

Abstract: A wireless communications method is provided. The method includes acquiring, by a policy and charging rules function (PCRF) entity, a first parameter, a second parameter, and state information of a current service of a base station; determining, according to the first parameter and the second parameter, and with reference to the state information of the current service of the base station, whether a condition for guaranteeing quality of service (QoS) of a service is satisfied; and if it is determined that the condition for guaranteeing the QoS of the service is satisfied, permitting providing a user equipment with the first service having a corresponding QoS guarantee; or if it is determined that the condition for guaranteeing the QoS of the service is not satisfied, performing a first operation. The method is applied to the field of communications.