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    Support for large numbers of views in multi-layer coding
    31.
    发明授权
    Support for large numbers of views in multi-layer coding 有权

    公开(公告)号：US09706228B2

    公开(公告)日：2017-07-11

    申请号：US14514310

    申请日：2014-10-14

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ying Chen ,  Ye-Kui Wang

    IPC: H04N19/597 ,  H04N19/70

    CPC classification number: H04N19/70 ,  H04N19/597

    Abstract: A computing device obtains a Network Abstraction Layer (NAL) unit header of a NAL unit of the multi-layer video data. The NAL unit header comprises a layer identifier syntax element having a value that specifies an identifier of a layer of the NAL unit. The layer identifier syntax element comprises a plurality of bits that represent the value within a defined range of values. A requirement of the bitstream conforming to a video coding standard is that the value of the layer identifier syntax element is less than the maximum value of the range of values.

    SUPPORT OF RANDOM ACCESS AND SWITCHING OF LAYERS AND SUB-LAYERS IN MULTI-LAYER VIDEO FILES
    36.
    发明申请
    SUPPORT OF RANDOM ACCESS AND SWITCHING OF LAYERS AND SUB-LAYERS IN MULTI-LAYER VIDEO FILES 审中-公开

    公开(公告)号：US20170111642A1

    公开(公告)日：2017-04-20

    申请号：US15286273

    申请日：2016-10-05

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang

    IPC: H04N19/187 ,  H04N19/70 ,  H04N19/50

    CPC classification number: H04N19/70 ,  H04N19/30 ,  H04N21/8451 ,  H04N21/85406

    Abstract: A device generates, in a file storing a multi-layer bitstream, a track box that contains metadata for a track. The device generates, in the track box, a sample description box containing a sample group description entry. Additionally, the device generates, in the track box, a sample-to-group box for the track. The sample-to-group box mapping samples of the track into a sample group. The sample-to-group box specifies target layers among layers present in the track. Each of the target layers contains at least one picture belonging to a particular picture type. The sample group is one of a temporal sub-layer access sample group and the particular picture type is a temporal sub-layer access picture type, or a stepwise temporal sub-layer access sample group and the particular picture type is a step-wise temporal sub-layer access picture type.

    Coding SEI NAL units for video coding
    37.
    发明授权
    Coding SEI NAL units for video coding 有权
    编码用于视频编码的SEI NAL单元

    公开(公告)号：US09584804B2

    公开(公告)日：2017-02-28

    申请号：US13802005

    申请日：2013-03-13

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang

    IPC: H04N19/00 ,  H04N19/50 ,  H04N19/70 ,  H04N19/46 ,  H04N19/31 ,  H04N19/573

    CPC classification number: H04N19/50 ,  H04N19/31 ,  H04N19/46 ,  H04N19/573 ,  H04N19/70

    Abstract: In one example, a device for decoding video data includes a processor configured to determine, for a supplemental enhancement information (SEI) network abstraction layer (NAL) unit of a bitstream, whether a NAL unit type value for the SEI NAL unit indicates that the NAL unit comprises a prefix SEI NAL unit including a prefix SEI message or a suffix SEI NAL unit including a suffix SEI message, and decode video data of the bitstream following the SEI NAL unit based on whether the SEI NAL unit is the prefix SEI NAL unit or the suffix SEI NAL unit and data of the SEI NAL unit.

    Abstract translation: 在一个示例中，用于解码视频数据的设备包括：处理器，被配置为：对于比特流的补充增强信息（SEI）网络抽象层（NAL）单元，确定SEI NAL单元的NAL单元类型值是否指示 NAL单元包括前缀SEI NAL单元，其包括前缀SEI消息或包括后缀SEI消息的后缀SEI NAL单元，以及基于SEI NAL单元是否是前缀SEI NAL单元来解码位于SEI NAL单元之后的比特流的视频数据 或后缀SEI NAL单元和SEI NAL单元的数据。

    Gradual decoding refresh with temporal scalability support in video coding
    39.
    发明授权
    Gradual decoding refresh with temporal scalability support in video coding 有权
    逐渐解码刷新，视频编码支持时间可扩展性

    公开(公告)号：US09571847B2

    公开(公告)日：2017-02-14

    申请号：US14147973

    申请日：2014-01-06

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Adarsh Krishnan Ramasubramonian

    IPC: H04N7/18 ,  H04N11/02 ,  H04N11/04 ,  H04N19/44 ,  H04N19/70 ,  H04N19/107 ,  H04N19/31 ,  H04N19/46

    CPC classification number: H04N19/44 ,  H04N19/107 ,  H04N19/31 ,  H04N19/46 ,  H04N19/70

    Abstract: An example method of decoding video data includes receiving a plurality of pictures, receiving, in a message associated with a first picture of the plurality of pictures, information indicating a picture order count (POC) value of a recovery point picture of a gradual decoder refresh (GDR) set, when a picture that follows the first picture in decoding order has the POC value that is equal to a POC value of the recovery point picture, identifying the picture having the POC value equal to the POC value of the recovery point picture, as a recovery point picture, and when none of the pictures that follow the first picture has the POC value that is equal to the POC value of the recovery point picture, identifying one of the pictures that has a POC value greater than the POC value of the recovery point picture as the recovery point picture.

    Abstract translation: 解码视频数据的示例方法包括接收多个图像，在与多个图像的第一图像相关联的消息中接收指示逐渐解码器刷新的恢复点图像的图像顺序计数（POC）值的信息 （GDR），当以解码顺序的第一图像之后的图像具有等于恢复点图像的POC值的POC值时，识别具有等于恢复点图像的POC值的POC值的图像 ，作为恢复点图像，并且当第一图像之后没有图像的POC值等于恢复点图像的POC值时，识别出具有大于POC值的POC值的图像之一 的恢复点图片作为恢复点图片。

    Cross-layer alignment of intra random access point pictures
    40.
    发明授权
    Cross-layer alignment of intra random access point pictures 有权
    内部随机接入点图像的跨层对齐

    公开(公告)号：US09525883B2

    公开(公告)日：2016-12-20

    申请号：US14331020

    申请日：2014-07-14

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Adarsh Krishnan Ramasubramonian

    IPC: H04N19/46 ,  H04N19/169 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/187

    CPC classification number: H04N19/188 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

    Abstract: A video processing device includes a memory storing video data and one or more processors configured to: receive a first network abstraction layer (NAL) unit comprising a first picture of an access unit; in response to determining the first NAL unit comprises an intra random access point (IRAP) picture and in response to a NAL unit type for the first NAL unit indicating the presence of an instantaneous decoding refresh (IDR) picture without any associated leading pictures for a second NAL unit of the access unit comprising another IRAP picture, determine a NAL unit type for the second NAL unit to be a NAL unit type indicating the presence of an IDR picture without any associated leading pictures; and, process the first NAL unit and the second NAL unit based on the NAL unit type for the second NAL unit.

    Abstract translation: 视频处理设备包括存储视频数据的存储器和配置成：接收包括访问单元的第一画面的第一网络抽象层（NAL）单元的一个或多个处理器; 响应于确定第一NAL单元包括内部随机接入点（IRAP）图片，并且响应于第一NAL单元的NAL单元类型，指示存在瞬时解码刷新（IDR）图像，而没有任何相关联的前导画面用于 所述接入单元的第二NAL单元包括另一个IRAP图像，将所述第二NAL单元的NAL单元类型确定为指示没有任何相关联的前导图像的IDR图像的存在的NAL单元类型; 并且基于第二NAL单元的NAL单元类型处理第一NAL单元和第二NAL单元。

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