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    Preprocessing method, preprocessing apparatus and coding device
    31.
    发明授权
    Preprocessing method, preprocessing apparatus and coding device 有权
    预处理方法，预处理装置和编码装置

    公开(公告)号：US08831961B2

    公开(公告)日：2014-09-09

    申请号：US13914206

    申请日：2013-06-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Lei Miao ,  Fengyan Qi ,  Jianfeng Xu ,  Dejun Zhang ,  Qing Zhang

    IPC: G10L19/00 ,  G10L19/18 ,  G10L21/06 ,  G10L19/06 ,  G10L19/09

    CPC classification number: G10L21/06 ,  G10L19/06 ,  G10L19/09 ,  G10L19/18

    Abstract: The present disclosure relates to coding and decoding technologies, and discloses a preprocessing method, a preprocessing apparatus, and a coding device. The preprocessing method includes: obtaining characteristic information of a current frame signal; identifying whether the current frame signal requires no coding operation of removing LTC according to the characteristic information of the current frame signal and preset information; and if identifying that the current frame signal requires no coding operation of removing LTC, performing the coding operation of removing STC for the current frame signal; and if identifying that the current frame signal requires the coding operation of removing LTC, performing the coding operations of removing both LTC and STC for the current frame signal. Through the technical solution provided herein, the coding operation of removing LTC is performed for only part of the input frame signals.

    Abstract translation: 本公开涉及编码和解码技术，并且公开了一种预处理方法，预处理装置和编码装置。 预处理方法包括：获得当前帧信号的特征信息; 识别当前帧信号是否不需要根据当前帧信号和预设信息的特征信息去除LTC的编码操作; 并且如果识别出当前帧信号不需要去除LTC的编码操作，则执行去除当前帧信号的STC的编码操作; 并且如果识别当前帧信号需要去除LTC的编码操作，则执行去除当前帧信号的LTC和STC的编码操作。 通过本文提供的技术方案，仅对部分输入帧信号执行去除LTC的编码操作。

    Audio signal encoding method and apparatus, and audio signal decoding method and apparatus
    32.
    发明授权
    Audio signal encoding method and apparatus, and audio signal decoding method and apparatus 有权

    公开(公告)号：US12057130B2

    公开(公告)日：2024-08-06

    申请号：US17852479

    申请日：2022-06-29

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Dejun Zhang

    IPC: G10L19/02 ,  G10L19/008 ,  G10L19/09 ,  G10L19/20 ,  G10L19/26

    CPC classification number: G10L19/02 ,  G10L19/008 ,  G10L19/09 ,  G10L19/20 ,  G10L19/265

    Abstract: An audio signal encoding method and apparatus, and an audio signal decoding method and apparatus are disclosed. The audio signal encoding method includes: obtaining a frequency-domain coefficient of a current frame and a frequency-domain coefficient of a reference signal of the current frame; performing filtering processing on the frequency-domain coefficient of the current frame to obtain a filtering parameter; determining a target frequency-domain coefficient of the current frame based on the filtering parameter; performing filtering processing on the frequency-domain coefficient of the reference signal and a reference frequency-domain coefficient based on the filtering parameter to obtain a target frequency-domain coefficient of the reference signal; and encoding the target frequency-domain coefficient of the current frame based on the target frequency-domain coefficient of the current frame, the target frequency-domain coefficient of the reference signal, and a reference target frequency-domain coefficient. The method can improve audio signal encoding/decoding efficiency.

    Point cloud encoding method and encoder
    33.
    发明授权
    Point cloud encoding method and encoder 有权

    公开(公告)号：US11875538B2

    公开(公告)日：2024-01-16

    申请号：US17205100

    申请日：2021-03-18

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Dejun Zhang ,  Tian Wang ,  Vladyslav Zakharchenko

    IPC: G06T9/00 ,  H04N19/172

    CPC classification number: G06T9/00 ,  H04N19/172

    Abstract: A point cloud encoding method is provided to improve coding efficiency. The method includes: obtaining global matched patches in N frames of point clouds in a point cloud group; determining M union patch occupancy maps corresponding to M sets, where a union patch occupancy map corresponding to an mth set is a union set of occupancy maps of all global matched patches in the mth set; packing the M union patch occupancy maps to obtain a global occupancy map; packing each of the N frames of point clouds to obtain occupancy maps of the N frames of point clouds; and encoding the N frames of point clouds based on the occupancy maps of the N frames of point clouds.

    Point Cloud Encoding Method, Point Cloud Decoding Method, Encoder, and Decoder
    35.
    发明申请
    Point Cloud Encoding Method, Point Cloud Decoding Method, Encoder, and Decoder 有权

    公开(公告)号：US20210183110A1

    公开(公告)日：2021-06-17

    申请号：US17145998

    申请日：2021-01-11

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Dejun Zhang ,  Bo Liu ,  Wei Hu ,  Wenhai Wu ,  Tian Wang

    IPC: G06T9/00 ,  G06T3/60

    Abstract: A point cloud decoding method related to the field of coding technologies and includes reconstructing a point cloud comprising one or more patches, wherein the one or more patches comprise a current patch, wherein the reconstructing process includes transforming coordinates (x2, y2) of a second point of the current patch in a second coordinate system to coordinates (x1, y1) of a first point of the current patch in a first coordinate system, wherein the coordinates (x1, y1) of the first point of the current patch in the first coordinate system are obtained based on the coordinates (x2, y2) of the second point of the current patch in the second coordinate system and a transform matrix.

    Coding method, decoding method, coder, and decoder
    36.
    发明授权
    Coding method, decoding method, coder, and decoder 有权

    公开(公告)号：US10153780B2

    公开(公告)日：2018-12-11

    申请号：US15880300

    申请日：2018-01-25

    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

    Inventor： Fuwei Ma ,  Dejun Zhang

    IPC: H03M7/34 ,  H03M7/30 ,  G10L19/08 ,  G10L19/10

    Abstract: A coding method, a decoding method, a coder, and a decoder, where the coding method includes obtaining the pulse distribution, on a track, of the pulses to be encoded on the track, determining a distribution identifier for identifying the pulse distribution according to the pulse distribution, and generating a coding index that includes the distribution identifier. The decoding method includes receiving a coding index, obtaining a distribution identifier from the coding index, wherein the distribution identifier is configured to identify the pulse distribution, on a track, of the pulses to be encoded on the track, determining the pulse distribution, on a track, of all the pulses to be encoded on the track according to the distribution identifier, and reconstructing the pulse order on the track according to the pulse distribution.

    Coding Method, Decoding Method, Coder, and Decoder
    39.
    发明申请
    Coding Method, Decoding Method, Coder, and Decoder 有权
    编码方法，解码方法，编码器和解码器

    公开(公告)号：US20160344405A1

    公开(公告)日：2016-11-24

    申请号：US15228661

    申请日：2016-08-04

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Fuwei Ma ,  Dejun Zhang

    IPC: H03M7/30

    CPC classification number: H03M7/3082 ,  G10L19/08 ,  G10L19/10

    Abstract: A coding method, a decoding method, a coder, and a decoder, where the coding method includes obtaining the pulse distribution, on a track, of the pulses to be encoded on the track, determining a distribution identifier for identifying the pulse distribution according to the pulse distribution, and generating a coding index that includes the distribution identifier. The decoding method includes receiving a coding index, obtaining a distribution identifier from the coding index, wherein the distribution identifier is configured to identify the pulse distribution, on a track, of the pulses to be encoded on the track, determining the pulse distribution, on a track, of all the pulses to be encoded on the track according to the distribution identifier, and reconstructing the pulse order on the track according to the pulse distribution.

    Abstract translation: 一种编码方法，解码方法，编码器和解码器，其中编码方法包括在轨道上获得要编码在轨道上的脉冲的脉冲分布，确定用于识别脉冲分布的分布标识符，根据 脉冲分布，并且生成包括分布标识符的编码索引。 解码方法包括接收编码索引，从编码索引获得分布标识符，其中分配标识符被配置为识别要在轨道上编码的脉冲的轨道上的脉冲分布，确定脉冲分布 根据分布标识符在轨道上编码的所有脉冲的轨道，以及根据脉冲分布重建轨道上的脉冲序列。

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