公开(公告)号：US09225354B2

公开(公告)日：2015-12-29

申请号：US14617585

申请日：2015-02-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fuwei Ma ,  Dejun Zhang

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

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

Abstract: A coding method, a decoding method, a coder, and a decoder are disclosed herein. A 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. A 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: 本文公开了一种编码方法，解码方法，编码器和解码器。 一种编码方法包括：在轨道上获取要编码的脉冲的脉冲分布; 根据脉冲分布确定用于识别脉冲分布的分布标识符; 以及生成包括所述分发标识符的编码索引。 解码方法包括：接收编码索引; 从所述编码索引获得分布标识符，其中所述分发标识符被配置为在轨道上识别要在所述轨道上编码的脉冲的脉冲分布; 根据分布标识符确定在轨道上要编码的所有脉冲的轨道上的脉冲分布; 并根据脉冲分布重建轨道上的脉冲顺序。

公开(公告)号：US20140122066A1

公开(公告)日：2014-05-01

申请号：US14150498

申请日：2014-01-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fuwei Ma ,  Dejun Zhang

IPC: G10L19/00

CPC classification number: G10L19/107 ,  G10L19/00 ,  G10L19/002 ,  G10L19/008 ,  G10L19/12 ,  G10L19/24

Abstract: In a pulse encoding and decoding method and a pulse codec, more than two tracks are jointly encoded, so that free codebook space in the situation of single track encoding can be combined during joint encoding to become code bits that may be saved. Furthermore, a pulse that is on each track and required to be encoded is combined according to positions, and the number of positions having pulses, distribution of the positions that have pulses on the track, and the number of pulses on each position that has a pulse are encoded separately, so as to avoid separate encoding performed on multiple pulses of a same position, thereby further saving code bits.

Abstract translation: 在脉冲编码和解码方法和脉冲编解码器中，联合编码两个以上的轨道，从而在联合编码期间可以组合单轨道编码情况下的空闲码本空间，成为可以保存的码位。 此外，根据位置，具有脉冲的位置的数量，在轨道上具有脉冲的位置的分布以及每个位置上的脉冲数，组合在每个轨道上并且需要编码的脉冲， 脉冲被分开编码，以避免在相同位置的多个脉冲上执行单独编码，从而进一步节省码位。

公开(公告)号：US20130304460A1

公开(公告)日：2013-11-14

申请号：US13943812

申请日：2013-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dejun Zhang ,  Lei Miao ,  Jianfeng Xu ,  Fengyan Qi ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma ,  Yang Gao

IPC: G10L19/09

CPC classification number: G10L19/09 ,  G10L19/0017 ,  H04N19/50

Abstract: The present disclosure relates to a method, apparatus, and system for encoding and decoding signals. The encoding method includes: converting a first-domain signal into a second-domain signal; performing Linear Prediction (LP) processing and Long-Term Prediction (LTP) processing for the second-domain signal; obtaining a long-term flag value according to a decision criterion; obtaining a second-domain predictive signal according to the LP processing result and the LTP processing result when the long-term flag value is a first value; obtaining a second-domain predictive signal according to the LP processing result when the long-term flag value is a second value; converting the second-domain predictive signal into a first-domain predictive signal, and calculating a first-domain predictive residual signal; and outputting a bit stream that includes the first-domain predictive residual signal.

Abstract translation: 本公开涉及用于对信号进行编码和解码的方法，装置和系统。 编码方法包括：将第一域信号转换为第二域信号; 对第二域信号执行线性预测（LP）处理和长期预测（LTP）处理; 根据决策标准获得长期标志值; 当长期标志值为第一值时，根据LP处理结果和LTP处理结果获得第二域预测信号; 当长期标志值是第二值时，根据LP处理结果获得第二域预测信号; 将所述第二域预测信号转换为第一域预测信号，以及计算第一域预测残差信号; 并输出包括第一域预测残差信号的比特流。

公开(公告)号：US08560329B2

公开(公告)日：2013-10-15

申请号：US13728256

申请日：2012-12-27

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/00

CPC classification number: G10L19/008 ,  G10L19/06

Abstract: A signal compression method and apparatus are provided. The signal compression method includes: multiplying an input signal by a window function; calculating original autocorrelation coefficients of a windowed input signal; calculating a white-noise correction factor or a lag-window according to the original autocorrelation coefficients, and calculating modified autocorrelation coefficients according to the original autocorrelation coefficients, the white-noise correction factor and the lag-window; calculating linear prediction coefficients according to the modified autocorrelation coefficients; and outputting a coded bit stream according to the linear prediction coefficients.

Abstract translation: 提供信号压缩方法和装置。 信号压缩方法包括：将输入信号乘以窗口函数; 计算窗口输入信号的原始自相关系数; 根据原始自相关系数计算白噪声校正因子或滞后窗，并根据原始自相关系数，白噪声校正因子和滞后窗计算修正的自相关系数; 根据修正的自相关系数计算线性预测系数; 以及根据线性预测系数输出编码比特流。

公开(公告)号：US20130117030A1

公开(公告)日：2013-05-09

申请号：US13728256

申请日：2012-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: G10L19/008

CPC classification number: G10L19/008 ,  G10L19/06

Abstract: A signal compression method and apparatus are provided. The signal compression method includes: multiplying an input signal by a window function; calculating original autocorrelation coefficients of a windowed input signal; calculating a white-noise correction factor or a lag-window according to the original autocorrelation coefficients, and calculating modified autocorrelation coefficients according to the original autocorrelation coefficients, the white-noise correction factor and the lag-window; calculating linear prediction coefficients according to the modified autocorrelation coefficients; and outputting a coded bit stream according to the linear prediction coefficients.

Abstract translation: 提供信号压缩方法和装置。 信号压缩方法包括：将输入信号乘以窗口函数; 计算窗口输入信号的原始自相关系数; 根据原始自相关系数计算白噪声校正因子或滞后窗，并根据原始自相关系数，白噪声校正因子和滞后窗计算修正的自相关系数; 根据修正的自相关系数计算线性预测系数; 以及根据线性预测系数输出编码比特流。

公开(公告)号：US12272364B2

公开(公告)日：2025-04-08

申请号：US17853173

申请日：2022-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dejun Zhang

IPC: G10L19/02 ,  G10L19/06 ,  G10L19/09

Abstract: An audio signal encoding method and apparatus, and an audio signal decoding method and apparatus, are described. The encoding method includes obtaining a target frequency-domain coefficient of a current frame and a reference target frequency-domain coefficient of the current frame. The encoding method further includes calculating a cost function based on the target frequency-domain coefficient and the reference target frequency-domain coefficient of the current frame, where the cost function is for determining whether to perform long-term prediction (LTP) processing on the current frame during encoding of the target frequency-domain coefficient of the current frame. Additionally, the method includes encoding the target frequency-domain coefficient of the current frame based on the cost function.

公开(公告)号：US12212762B2

公开(公告)日：2025-01-28

申请号：US17477812

申请日：2021-09-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kangying Cai ,  Dejun Zhang

IPC: H04N19/20 ,  H04N19/136 ,  H04N19/184 ,  H04N19/70

Abstract: This application discloses a point cloud encoding method and apparatus, a point cloud decoding method and apparatus, and a storage medium for point cloud encoding and/or decoding, and belongs to a data processing field. The method includes: first obtaining auxiliary information of a to-be-encoded patch, and then encoding the auxiliary information and a first index of the to-be-encoded patch into a bitstream. Values of the first index may be a first value, a second value, and a third value. Different values indicate different types of patches. Therefore, different types of patches can be distinguished by using the first index. For different types of patches, their corresponding auxiliary information encoded into a bitstream may comprise different contents. This can simplify a format of information encoded into the bitstream, reduce bit overheads of the bitstream, and improve encoding efficiency.

公开(公告)号：US11704837B2

公开(公告)日：2023-07-18

申请号：US17712794

申请日：2022-04-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dejun Zhang ,  Bo Liu ,  Vladyslav Zakharchenko

IPC: G06T9/00 ,  H04N19/119 ,  H04N19/147 ,  H04N19/184 ,  H04N19/70

CPC classification number: G06T9/00 ,  H04N19/119 ,  H04N19/147 ,  H04N19/184 ,  H04N19/70

Abstract: A point cloud coding method includes obtaining description information of a bounding box size of a to-be-encoded point cloud and a normal axis of a to-be-encoded patch in the to-be-encoded point cloud, where the description information of the bounding box size of the to-be-encoded point cloud and the normal axis of the to-be-encoded patch are used to determine a tangent axis of the to-be-encoded patch and a bitangent axis of the to-be-encoded patch. The point cloud encoding method further includes encoding a syntax element into a bitstream, where the syntax element includes an index of the normal axis of the to-be-encoded patch and information for indicating the description information of the bounding box size of the to-be-encoded point cloud, and the syntax element is used to indicate the tangent axis of the to-be-encoded patch and the bitangent axis of the to-be-encoded patch.

公开(公告)号：US11328450B2

公开(公告)日：2022-05-10

申请号：US17136915

申请日：2020-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dejun Zhang ,  Bo Liu ,  Vladyslav Zakharchenko

IPC: H04N19/119 ,  G06T9/00 ,  H04N19/147 ,  H04N19/184 ,  H04N19/70

Abstract: A point cloud coding method includes obtaining description information of a bounding box size of a to-be-encoded point cloud and a normal axis of a to-be-encoded patch in the to-be-encoded point cloud, where the description information of the bounding box size of the to-be-encoded point cloud and the normal axis of the to-be-encoded patch are used to determine a tangent axis of the to-be-encoded patch and a bitangent axis of the to-be-encoded patch, and encoding a syntax element into a bitstream, where the syntax element includes an index of the normal axis of the to-be-encoded patch and information for indicating the description information of the bounding box size of the to-be-encoded point cloud, and the syntax element is used to indicate the tangent axis of the to-be-encoded patch and the bitangent axis of the to-be-encoded patch.

公开(公告)号：US20210118188A1

公开(公告)日：2021-04-22

申请号：US17136915

申请日：2020-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dejun Zhang ,  Bo Liu ,  Vladyslav Zakharchenko

IPC: G06T9/00 ,  H04N19/70 ,  H04N19/184 ,  H04N19/147 ,  H04N19/119

Abstract: Embodiments of this application disclose a point cloud coding method and a coder. The method includes: obtaining description information of a bounding box size of a to-be-encoded point cloud and a normal axis of a to-be-encoded patch in the to-be-encoded point cloud, where the description information of the bounding box size of the to-be-encoded point cloud and the normal axis of the to-be-encoded patch are used to determine a tangent axis of the to-be-encoded patch and a bitangent axis of the to-be-encoded patch; and encoding a syntax element into a bitstream, where the syntax element includes an index of the normal axis of the to-be-encoded patch and information for indicating the description information of the bounding box size of the to-be-encoded point cloud, and the syntax element is used to indicate the tangent axis of the to-be-encoded patch and the bitangent axis of the to-be-encoded patch.