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    Picture decoding and encoding methods and apparatuses, decoder, and encoder
    1.
    发明授权
    Picture decoding and encoding methods and apparatuses, decoder, and encoder 有权

    公开(公告)号：US11006134B2

    公开(公告)日：2021-05-11

    申请号：US16067420

    申请日：2016-11-15

    Applicant: ZTE CORPORATION

    Inventor： Ming Li ,  Ping Wu ,  Zhao Wu ,  Guoqiang Shang

    IPC: H04N19/196 ,  H04N19/30 ,  H04N19/70 ,  H04N19/117 ,  H04N19/154 ,  H04N19/174

    Abstract: The present disclosure provides picture encoding and decoding methods, picture encoding and decoding devices as well as a decoder and an encoder. The picture decoding method includes: parsing a video bitstream to obtain candidate reshaping parameters from a picture-layer and/or slice-layer data unit of the video bitstream, and determining a reshaping parameter used for reshaping a reconstructed picture according to the obtained candidate reshaping parameters; and reshaping the reconstructed picture by using the reshaping parameter. The reconstructed picture is a picture obtained by decoding the video bitstream before performing the reshaping. The picture-layer and/or slice-layer data unit includes at least one of the following data units: a picture-layer parameter set and/or a slice-layer parameter set different from a picture parameter set (PPS), a parameter data unit which are included in an access unit (AU) corresponding to the reconstructed picture, slice header and a system-layer picture parameter data unit.

    Methods and devices for coding and decoding depth information, and video processing and playing device
    7.
    发明授权
    Methods and devices for coding and decoding depth information, and video processing and playing device 有权

    公开(公告)号：US10477245B2

    公开(公告)日：2019-11-12

    申请号：US14779308

    申请日：2014-02-25

    Applicant: ZTE Corporation

    Inventor： Ming Li ,  Ping Wu ,  Hongwei Li ,  Guoqiang Shang ,  Yutang Xie

    IPC: H04N19/597 ,  H04N13/161 ,  H04N19/44 ,  H04N19/91

    Abstract: Disclosed are methods and devices for coding and decoding depth information, which relate to a Three-Dimensional Video (3DV) coding technology. The coding method includes: arranging all elements in a DLT in an ascending order of values, wherein the DLT is a data structure representing depth numerical values by index numbers; coding a value of a first element in the DLT, and writing the bits of the value into a bitstream; and coding a difference value between a value of each of the other elements except the first element in the DLT and a value of an element with an index number smaller than an index number of the each of other elements in the DLT respectively, and writing the value of the difference value into the bitstream. The method for decoding depth information and related coding and decoding devices are also provided. By the technical solutions of the disclosure, efficiency of coding and decoding depth information is improved, and resource occupation during depth information coding is reduced.

    METHOD, SYSTEM AND DEVICE FOR CODING AND DECODING DEPTH INFORMATION
    9.
    发明申请
    METHOD, SYSTEM AND DEVICE FOR CODING AND DECODING DEPTH INFORMATION 审中-公开
    用于编码和解密深度信息的方法，系统和设备

    公开(公告)号：US20160050439A1

    公开(公告)日：2016-02-18

    申请号：US14783852

    申请日：2014-03-25

    Applicant: ZTE CORPORATION

    Inventor： Hongwei Li ,  Ming Li ,  Ping Wu ,  Guoqiang Shang ,  Yutang Xie

    IPC: H04N19/597 ,  H04N19/44

    CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/44

    Abstract: Disclosed are a method, system and device for coding and decoding depth information, and the method includes: data in original Depth Look-up Tables (DLTs) of selected views are combined to establish a unified DLT, a value of the number of elements in the unified DLT and each element in the unified DLT are coded respectively and a coded value and each coded element are transmitted to a decoder; and depth information of each view is coded by taking the unified DLT as a whole or in portions and coded depth information of each view is transmitted to the decoder.

    Abstract translation: 公开了用于对深度信息进行编码和解码的方法，系统和设备，并且该方法包括：将所选视图的原始深度查找表（DLT）中的数据组合以建立统一的DLT， 统一DLT和统一DLT中的每个元素被分别编码，编码值和每个编码元素被发送到解码器; 通过统一DLT作为整体或部分地编码每个视图的深度信息，并且将每个视图的编码深度信息发送到解码器。

    Method and device for entropy coding and decoding using mapping of matching relationship parameters
    10.
    发明授权
    Method and device for entropy coding and decoding using mapping of matching relationship parameters 有权

    公开(公告)号：US11451835B2

    公开(公告)日：2022-09-20

    申请号：US17061414

    申请日：2020-10-01

    Applicant: Tongji University ,  ZTE Corporation

    Inventor： Tao Lin ,  Ming Li ,  Guoqiang Shang ,  Zhao Wu

    IPC: H04N19/91 ,  H04N19/157 ,  H04N19/182 ,  H04N19/517 ,  H04N19/593

    Abstract: An image coding method and apparatus and an image decoding method and apparatus are provided by the present invention. The image coding method includes: implementing matching coding for pixels of an input video image to obtain one or more matching relationship parameters, herein the matching relationship parameters are parameters used in a process of constructing predicted values and/or reconstructed values of the pixels in the image; mapping the matching relationship parameters to obtain mapped values of the matching relationship parameters; and performing entropy coding on the mapped values of the matching relationship parameters. The present invention addresses the problem existing in the conventional art which is caused by the direct implementation of entropy coding for matching relationship parameters and achieves a good data compression effect through entropy coding.

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