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    VIDEO ENCODING AND DECODING METHODS AND APPARATUS
    12.
    发明申请
    VIDEO ENCODING AND DECODING METHODS AND APPARATUS 有权

    公开(公告)号：US20210218965A1

    公开(公告)日：2021-07-15

    申请号：US17214520

    申请日：2021-03-26

    申请人： ZTE Corporation

    发明人： Ming LI ,  Ping WU ,  Zhao WU

    IPC分类号： H04N19/119 ,  H04N19/124 ,  H04N19/436 ,  H04N19/70 ,  H04N19/174

    摘要： Techniques for encoding, decoding, and extracting one or more bitstreams to form one or more sub-bitstreams are described. In one example aspect, a method for video or picture processing includes partitioning a picture into one or more tiles and generating one or more bitstreams using one or more configurations based on the one or more tiles. Generating each of the one or more bitstreams includes partitioning each of the one or more tiles into one or more slices, and performing, for each slice among the one or more slices a first encoding step to encode a tile identifier in a header of the slice, and a second encoding step to encode, in the header of the slice, a second address of the slice that indicates a location of the slice in the tile.

    Method for encoding and decoding at picture layer and slice layer, coder and decoder
    15.
    发明申请
    Method for encoding and decoding at picture layer and slice layer, coder and decoder 审中-公开
    图像层和切片层编码和解码方法，编码器和解码器

    公开(公告)号：US20150358623A1

    公开(公告)日：2015-12-10

    申请号：US14650942

    申请日：2012-11-01

    申请人： ZTE CORPORATION

    发明人： Ming LI ,  Ping WU

    IPC分类号： H04N19/159 ,  H04N19/82 ,  H04N19/117 ,  H04N19/174 ,  H04N19/172

    CPC分类号： H04N19/159 ,  H04N19/107 ,  H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/164 ,  H04N19/172 ,  H04N19/174 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

    摘要： Disclosed are methods for coding and decoding at picture layer and slice layer, and corresponding coder and decoder. The method comprises: coder selecting, according to network transmission state and video characteristic, different constrained loop filter (CLF) and/or constrained intra-prediction (CIP) control modes for one of the following three objects: 1: different video sequences; 2: pictures in different periods in the same video sequence; 3: different slices in the same picture; according to the selected CLF and/or CIP control mode, coding CLF and/or CIP control flag bits in picture layer parameter set and slice layer parameter set; and a decoder parsing slice layer bitstream containing header information, picture layer parameter set and/or slice layer parameter set, and according to the obtained CLF and/or CIP control flag bits, decoding picture and slice by using the corresponding CLF and/or CIP control mode. Through the present invention, a desirable tradeoff can be achieved between coding efficiency and error resilience performance.

    摘要翻译： 公开了图像层和切片层以及对应的编码器和解码器的编码和解码方法。 该方法包括：根据网络传输状态和视频特征，对以下三个对象之一的不同约束环路滤波器（CLF）和/或约束帧内预测（CIP）控制模式进行编码器选择：1：不同视频序列; 2：同一视频序列中不同时期的图片; 3：同一张图片中的不同切片; 根据选择的CLF和/或CIP控制模式，对图层参数集和切片层参数集中的CLF和/或CIP控制标志位进行编码; 以及解码器解码包含标题信息，图像层参数集和/或片层参数集的片层比特流，并且根据获得的CLF和/或CIP控制标志位，通过使用相应的CLF和/或CIP解码图片和片 控制模式。 通过本发明，可以在编码效率和错误恢复性能之间实现期望的折衷。

    Bitstream Generation and Processing Methods and Devices and System
    17.
    发明申请
    Bitstream Generation and Processing Methods and Devices and System 审中-公开
    比特流生成和处理方法及设备与系统

    公开(公告)号：US20160323590A1

    公开(公告)日：2016-11-03

    申请号：US15107730

    申请日：2014-10-15

    申请人： ZTE Corporation

    发明人： Ming LI ,  Ping WU ,  Guoqiang SHANG ,  Yutang XIE

    IPC分类号： H04N19/196 ,  H04N19/103 ,  H04N19/136 ,  H04N19/597 ,  H04N19/172

    CPC分类号： H04N19/196 ,  H04N19/103 ,  H04N19/136 ,  H04N19/172 ,  H04N19/30 ,  H04N19/433 ,  H04N19/597 ,  H04N19/70

    摘要： Provided are a bitstream generation method and apparatus, a bitstream processing method and apparatus, and a system. The bitstream generation method includes that: it is judged whether it is needed to execute a Picture Order Count (POC) alignment operation on an entire bitstream and/or a part of the bitstream according to an application requirement; and identification and control information is written into the bitstream according to a judgment result, wherein the identification and control information includes: information indicating whether to execute the POC alignment operation on the entire bitstream and/or a part of the bitstream. The flexibility in bitstream control can be improved.

    摘要翻译： 提供比特流生成方法和装置，比特流处理方法和装置以及系统。 比特流生成方法包括：根据应用要求判断是否需要对整个比特流和/或部分比特流执行图片顺序计数（POC）对齐操作; 并且根据判断结果将识别和控制信息写入比特流，其中识别和控制信息包括：指示是否对整个比特流和/或部分比特流执行POC对齐操作的信息。 可以提高比特流控制的灵活性。

    CROSS-COMPONENT QUANTIZATION IN VIDEO CODING
    19.
    发明申请
    CROSS-COMPONENT QUANTIZATION IN VIDEO CODING 有权

    公开(公告)号：US20220038721A1

    公开(公告)日：2022-02-03

    申请号：US17466788

    申请日：2021-09-03

    申请人： ZTE Corporation

    发明人： Ming LI ,  Ping WU

    IPC分类号： H04N19/186 ,  H04N19/124 ,  H04N19/70

    摘要： A video decoding technique includes parsing a bitstream to determine a quantization parameter (QP) for a luma component of a region from a data unit of a parameter set included in the bitstream, determining a flag from the data unit of the parameter set, determining, in a case that the flag is equal to a first value, a QP for a chroma component of the region as a first function of the QP for the luma component and a default chroma delta QP indicated by the flag, determining, in a case that the flag is equal to a second value, the QP for the chroma component of the region by (a) obtaining a delta chroma QP from the data unit, and (b) determining the QP for the chroma component as a second function of the QP for the luma component and the delta chroma QP, and decoding the chroma component using the QP for the chroma component in a case that the parameter set is activated for decoding the region.

    PARAMETER SET SIGNALING IN DIGITAL VIDEO
    20.
    发明申请
    PARAMETER SET SIGNALING IN DIGITAL VIDEO 有权

    公开(公告)号：US20210409779A1

    公开(公告)日：2021-12-30

    申请号：US17468564

    申请日：2021-09-07

    申请人： ZTE Corporation

    发明人： Ming LI ,  Ping WU

    IPC分类号： H04N19/70 ,  H04N19/172 ,  H04N19/169

    摘要： A bitstream processing technique includes obtaining a first parameter set identifier from a data unit containing bits corresponding to a coded video region, obtaining a tool flag from a first parameter set corresponding to the first parameter set identifier, determining, from the tool flag, that a tool parameter of a tool corresponding to the tool flag is present or enabled for decoding the coded video region, wherein the tool corresponds to a video coding technique, obtaining, based on the determining, a second parameter set identifier, obtaining the tool parameter from a second parameter set corresponding to the second parameter set identifier, and decoding the video region using the tool parameter.