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：US20130315313A1

公开(公告)日：2013-11-28

申请号：US13946705

申请日：2013-07-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mingyuan Yang ,  Sixin Lin ,  Jiantong Zhou ,  Haoping Yu

IPC: H04N7/36

CPC classification number: H04N19/51 ,  H04N19/513 ,  H04N19/523 ,  H04N19/533 ,  H04N19/59

Abstract: The present disclosure provides a method and an apparatus for rounding a coordinate value of a non-integer pixel position motion vector. The method includes: rounding a coordinate value of a non-integer pixel position motion vector, which includes: for each dimension of coordinates of the non-integer pixel position motion vector, when a coordinate in the dimension is a non-integer pixel position, rounding the coordinate value of the non-integer pixel position motion vector in the dimension to one of integer pixel coordinate positions A and B if distances from the coordinate of the non-integer pixel position motion vector in the dimension to the integer pixel coordinate positions A and B adjacent to the non-integer pixel position in the dimension are the same, where an integer pixel coordinate position is determined by a sign of the coordinate value of the non-integer pixel position motion vector in the dimension.

Abstract translation: 本公开提供了用于舍入非整数像素位置运动矢量的坐标值的方法和装置。 该方法包括：舍入非整数像素位置运动矢量的坐标值，该坐标值包括：对于非整数像素位置运动矢量的坐标的每个维度，当维度中的坐标是非整数像素位置时， 将尺寸中的非整数像素位置运动矢量的坐标值舍入到整数像素坐标位置A和B之一，如果距维度中的非整数像素位置运动矢量的坐标到整数像素坐标位置A 和B相邻的尺寸上的非整数像素位置的坐标值相同，其中整数像素坐标位置由尺寸中的非整数像素位置运动矢量的坐标值的符号确定。

公开(公告)号：US20220385920A1

公开(公告)日：2022-12-01

申请号：US17837574

申请日：2022-06-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/14 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593

Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

公开(公告)号：US11490092B2

公开(公告)日：2022-11-01

申请号：US17170122

申请日：2021-02-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhijie Zhao ,  Yuntan Fang ,  Jun Zha ,  Hu Chen ,  Jiantong Zhou

IPC: H04N19/176 ,  H04N19/137 ,  H04N19/132 ,  H04N19/167 ,  H04N7/01 ,  H04N19/31 ,  H04N19/33 ,  H04N5/335

Abstract: The present disclosure relates to encoding of video image using coding parameters, which are adapted based on events related to motion within the video image. Image content is captured by a standard image sensor and an event-triggered sensor, providing an event-signal indicating changes (e.g. amount and time-spatial location) of image intensity. Objects are detected within the video image, based on the event signal assessing motion of the object, and their textures extracted. The spatial-time coding parameters of the video image are determined based on the location and strength of the event signal, and the extent to which the detected objects moves.

公开(公告)号：US20200213616A1

公开(公告)日：2020-07-02

申请号：US16815914

申请日：2020-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shan Gao ,  Huanbang Chen ,  Haitao Yang ,  Jiantong Zhou ,  Shan Liu ,  Sriram Sethuraman ,  Jay Shingala ,  Jeeva Raj A. ,  Sagar Kotecha

IPC: H04N19/56 ,  H04N19/523 ,  H04N19/176

Abstract: An image prediction method and apparatus includes obtaining predicted motion information of an image block; determining an initial predicted block of the image block according to the predicted motion information and a reference image of the image block; performing, according to the predicted motion information, L iterative searches in the reference image using an integer pixel step size to obtain an intermediate predicted block of the image block; performing a single search in the reference image using a fractional pixel step size to obtain M predicted blocks of the image block; determining a target predicted block of the image block according to the M predicted blocks and the intermediate predicted block; and obtaining a predicted value of a pixel value of the image block according to a pixel value of the target predicted block.

公开(公告)号：US20190268602A1

公开(公告)日：2019-08-29

申请号：US16394763

申请日：2019-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/59 ,  H04N19/186 ,  H04N19/14 ,  H04N19/176 ,  H04N19/105 ,  H04N19/593

Abstract: An intra-frame decoding method is provided. The method includes: obtaining, from a video code stream, prediction mode information of a first signal component of a current block, determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode, obtaining a predicted value of a first signal component sampling point of the current block, and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.

公开(公告)号：US10313677B2

公开(公告)日：2019-06-04

申请号：US15862240

申请日：2018-01-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingyu Zhang ,  Oscar Au ,  Haitao Yang ,  Jiantong Zhou

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/186 ,  H04N19/59 ,  H04N19/14

Abstract: An intra-frame decoding method includes obtaining, from a video code stream, prediction mode information of a first signal component of a current block; determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block; and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block.