公开(公告)号：US09571829B2

公开(公告)日：2017-02-14

申请号：US14024047

申请日：2013-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Chao Pang ,  Zilian Ou

IPC: H04N7/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/196 ,  H04N19/149 ,  H04N19/46 ,  H04N19/115 ,  H04N19/96

CPC classification number: H04N19/124 ,  H04N19/115 ,  H04N19/149 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/96

Abstract: An encoding includes: obtaining, by an encoder, data to be encoded, where the data to be encoded is at least one LCU; determining, a quantization depth parameter of the LCU according to a preset bit rate control algorithm, and adding the quantization depth parameter into the data to be encoded; determining, a QP of each CU according to a size of a minimum picture block and a size of each CU included in the LCU; calculating, by the encoder, a QP difference of each CU according to the QP of each CU and a QP prediction value of each CU; for each CU that satisfies a preset condition, carrying, by the encoder, the QP difference of the CU in the CU; and encoding, by the encoder, the quantization depth parameter, the QP difference of the CU that satisfies the preset condition, and each CU to obtain a bit stream.

Abstract translation: 编码包括：由编码器获取待编码的数据，其中要被编码的数据是至少一个LCU; 根据预设比特率控制算法确定LCU的量化深度参数，并将量化深度参数加到待编码的数据中; 根据最小图像块的大小和包括在所述LCU中的每个CU的大小来确定每个CU的QP; 根据每个CU的QP和每个CU的QP预测值，由编码器计算每个CU的QP差; 对于满足预设条件的每个CU，由编码器携带CU中的CU的QP差; 并且由编码器编码量化深度参数，满足预置条件的CU的QP差和每个CU以获得比特流。

公开(公告)号：US20160294711A1

公开(公告)日：2016-10-06

申请号：US15177751

申请日：2016-06-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhuoyi Lv ,  Jiantong Zhou ,  Jiali Fu ,  Haitao Yang

IPC: H04L12/825 ,  H04L29/06

CPC classification number: H04L47/25 ,  H04L65/601 ,  H04N21/23439 ,  H04N21/25808 ,  H04N21/26258 ,  H04N21/44209 ,  H04N21/4621 ,  H04N21/8456

Abstract: Embodiments of the present invention disclose a method and an apparatus for acquiring a video bitstream, and relate to the field of information technologies, which can improve network bandwidth utilization. The method includes: firstly, acquiring, by a terminal, a minimum bit rate corresponding to a parameter of the terminal; then, sending, by the terminal, a video bitstream acquiring request to a server, and when receiving the video bitstream acquiring request sent by the terminal, sending, by the server, an MPD to the terminal; and finally, receiving, by the terminal, the MPD sent by the server, and acquiring a video bitstream according to the MPD and the minimum bit rate. The embodiments of the present invention are applicable to a case in which a user downloads video data by using a terminal.

Abstract translation: 本发明的实施例公开了一种用于获取视频比特流的方法和装置，并且涉及可以提高网络带宽利用率的信息技术领域。 该方法包括：首先，通过终端获取与终端的参数对应的最小比特率; 然后，通过终端向服务器发送视频比特流获取请求，并且当接收到由终端发送的视频比特流获取请求时，由服务器向终端发送MPD; 最后由终端接收由服务器发送的MPD，并根据MPD和最小比特率获取视频比特流。 本发明的实施例可应用于用户通过使用终端来下载视频数据的情况。

公开(公告)号：US09137531B2

公开(公告)日：2015-09-15

申请号：US13847044

申请日：2013-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jiantong Zhou

IPC: H04N7/26 ,  H04N19/50 ,  H04N19/176 ,  H04N19/129 ,  H04N19/61 ,  H04N19/157

CPC classification number: H04N19/50 ,  H04N19/129 ,  H04N19/157 ,  H04N19/176 ,  H04N19/61

Abstract: A scanning method and device, and a reverse scanning method and device in coding and decoding technologies are provided. The scanning method includes: receiving quantized transformed coefficients of a current block; obtaining a prediction direction of the current block; finding, according to the prediction direction, a scanning order corresponding to the prediction direction of the current block from a mapping relationship table of the prediction direction and the scanning order, wherein at least one scanning order in the mapping relationship table of the prediction direction and the scanning order corresponds to at least two prediction directions; and performing scanning processing on the coefficients by using the scanning order corresponding to the prediction direction of the current block. With the solutions of the present invention, the number of the scanning orders used in coding and decoding is decreased, and system complexity of a codec system is reduced.

Abstract translation: 提供了扫描方法和装置，以及编码和解码技术中的反向扫描方法和装置。 扫描方法包括：接收当前块的量化变换系数; 获取当前块的预测方向; 根据预测方向，从预测方向和扫描顺序的映射关系表中，找出与当前块的预测方向对应的扫描顺序，其中，在预测方向的映射关系表中的至少一个扫描顺序和 扫描顺序对应于至少两个预测方向; 利用与当前块的预测方向对应的扫描顺序，对系数进行扫描处理。 通过本发明的解决方案，编码和解码中使用的扫描次数减少，编解码系统的系统复杂度降低。

公开(公告)号：US20140247880A1

公开(公告)日：2014-09-04

申请号：US14274408

申请日：2014-05-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xing Wen ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/583 ,  H04N19/51

CPC classification number: H04N19/51 ,  H04N19/436 ,  H04N19/52

Abstract: The present invention relates to a method for coding and decoding a video signal, and provides a method for coding a video signal, including: determining space adjacent motion information of a parallel motion processing region PR; determining time adjacent motion information of a current block, where the current block is located in the parallel motion processing region PR; determining a candidate mot ion information set according to the space adjacent motion information of the parallel motion processing region PR and the time adjacent motion information of the current block; selecting motion information of the current block from the candidate motion information set, and sending a motion information indication of the current block to a decoding end, so as to assist the decoding end in determining the motion information of the current block; and performing motion compensation coding for the current block according to the motion information of the current block.

Abstract translation: 本发明涉及对视频信号进行编码和解码的方法，并提供一种对视频信号进行编码的方法，包括：确定平行运动处理区PR的相邻运动信息的空间; 确定当前块位于并行运动处理区PR中的当前块的相邻运动信息的时间; 根据并行运动处理区域PR的相邻运动信息的空间和当前块的时间相邻运动信息确定候选电子信息集; 从候选运动信息集中选择当前块的运动信息，并将当前块的运动信息指示发送到解码端，以帮助解码结束确定当前块的运动信息; 以及根据当前块的运动信息对当前块执行运动补偿编码。

公开(公告)号：US20140098862A1

公开(公告)日：2014-04-10

申请号：US14102186

申请日：2013-12-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Jiantong Zhou

IPC: H04N7/32

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

Abstract: Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information.

公开(公告)号：US12231669B2

公开(公告)日：2025-02-18

申请号：US17851378

申请日：2022-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/13 ,  H04N19/169 ,  H04N19/176

Abstract: The present disclosure discloses a video decoding method and a video decoder. The method includes: parsing coding tree split information to obtain a current node; determining coordinates of an upper-left corner of a region covered by a current quantization group based on a depth N of the current node; obtaining a QP delta of a current CU in the region covered by the current quantization group; and obtaining a reconstructed picture of the current CU based on the QP delta of the current CU.

公开(公告)号：US20250024018A1

公开(公告)日：2025-01-16

申请号：US18885854

申请日：2024-09-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Jianle Chen ,  Weiwei Xu ,  Ting Fu ,  Jiali Fu

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: Technologies for inter prediction for a block in a video are provided. In one example, a method includes: when a size of a current block satisfies a preset condition, parsing a bitstream to obtain a syntax element, where the syntax element includes at least an index of optimal candidate motion information of the current block; determining, based on the syntax element, to construct a first list or a second list for the current block, where the first list is a block-based candidate motion information list, and the second list is a subblock-based candidate motion information list; determining optimal motion information from the first list or the second list based on the index; and predicting the current block based on the optimal motion information. In this method, the block-based candidate motion information list and the subblock-based candidate motion information list are distinguished from each other. This effectively reduces transmission costs of the optimal candidate motion information.

公开(公告)号：US12200224B2

公开(公告)日：2025-01-14

申请号：US18150742

申请日：2023-01-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiwei Xu ,  Haitao Yang ,  Yin Zhao

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/184

Abstract: Inter prediction method and apparatus are disclosed to resolve problems in the conventional technology that prediction samples obtained in an inter prediction mode are spatially discontinuous, prediction efficiency is affected, and prediction residual energy is relatively high. The method includes: parsing a bitstream to obtain motion information of a to-be-processed picture block; performing motion compensation on the to-be-processed picture block based on the obtained motion information, to obtain a prediction block of the to-be-processed picture block, where the prediction block of the to-be-processed picture block includes a prediction value of a target sample; and performing weighting calculation on one or more reconstructed values of one or more reference samples and the prediction value of the target sample, to update the prediction value of the target sample, where the reference sample(s) have a preset spatial position relationship with the target sample.

公开(公告)号：US12192494B2

公开(公告)日：2025-01-07

申请号：US17303886

申请日：2021-06-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Hong Zhang ,  Shan Liu

IPC: H04N19/30 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186

Abstract: A prediction method includes: performing downsampling on a luma component of a to-be-processed image block to obtain an initial signal of the luma component; obtaining a residual signal of the luma component based on the obtained initial signal of the luma component; obtaining a residual signal of a chroma component of the to-be-processed image block based on the chroma component of the to-be-processed image block without downsampling. The method further includes: respectively performing a transform on the residual signal of the luma component and the residual signal of the chroma component, to obtain transform coefficients, performing quantization on the obtained transform coefficients, to obtain quantization coefficients, and performing entropy encoding on the obtained quantization coefficients to obtain a bitstream.

公开(公告)号：US12184839B2

公开(公告)日：2024-12-31

申请号：US18456528

申请日：2023-08-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Jianle Chen ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An intra prediction method by using cross component liner prediction mode (CCLM), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining L available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.