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    Image prediction method and apparatus
    11.
    发明授权
    Image prediction method and apparatus 有权

    公开(公告)号：US11109060B2

    公开(公告)日：2021-08-31

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

    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.

    Dynamic Vision Sensor
    12.
    发明申请
    Dynamic Vision Sensor 有权

    公开(公告)号：US20210218913A1

    公开(公告)日：2021-07-15

    申请号：US17215729

    申请日：2021-03-29

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Zhaolei Xiao ,  Jiantong Zhou ,  Yuntan Fang ,  Shan Gao ,  Zhenhua Wu ,  Jing Xiao

    IPC: H04N5/351 ,  H04N5/378

    Abstract: This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.

    Method and apparatus for rounding coordinate value of non-integer pixel position motion vector
    15.
    发明授权
    Method and apparatus for rounding coordinate value of non-integer pixel position motion vector 有权
    用于舍入非整数像素位置运动矢量坐标值的方法和装置

    公开(公告)号：US09521408B2

    公开(公告)日：2016-12-13

    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: H04N7/34 ,  H04N7/36 ,  H04N19/51 ,  H04N19/513 ,  H04N19/533 ,  H04N19/523 ,  H04N19/59

    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。

    Intra-frame prediction and decoding methods and apparatuses for image signal
    17.
    发明授权
    Intra-frame prediction and decoding methods and apparatuses for image signal 有权
    用于图像信号的帧内预测和解码方法和装置

    公开(公告)号：US09462273B2

    公开(公告)日：2016-10-04

    申请号：US14265788

    申请日：2014-04-30

    Applicant: Huawei Technologies Co., Ltd.

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

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

    CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  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.

    Abstract translation: 提供帧内解码方法。 该方法包括：从视频码流获取当前块的第一信号分量的预测模式信息; 根据当前块的第一信号分量的预测模式信息，从当前块的第一信号分量的预测模式集合确定当前块的第一信号分量的预测模式，其中预测模式集合 当前块的第一信号分量包括以上线性模型（LMA）模式和线性模型左（LML）模式中的至少一个; 获取当前块的第一信号分量采样点的预测值; 根据当前块的第一信号分量采样点的预测值，获得当前块的第一信号分量采样点的重构值。

    Intra-Frame Prediction and Decoding Methods and Apparatuses for Image Signal
    18.
    发明申请
    Intra-Frame Prediction and Decoding Methods and Apparatuses for Image Signal 有权
    图像信号的帧内预测和解码方法和装置

    公开(公告)号：US20140233650A1

    公开(公告)日：2014-08-21

    申请号：US14265788

    申请日：2014-04-30

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/593 ,  H04N19/40

    CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  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.

    Abstract translation: 提供帧内解码方法。 该方法包括：从视频码流获取当前块的第一信号分量的预测模式信息; 根据当前块的第一信号分量的预测模式信息，从当前块的第一信号分量的预测模式集合确定当前块的第一信号分量的预测模式，其中预测模式集合 当前块的第一信号分量包括以上线性模型（LMA）模式和线性模型左（LML）模式中的至少一个; 获取当前块的第一信号分量采样点的预测值; 根据当前块的第一信号分量采样点的预测值，获得当前块的第一信号分量采样点的重构值。

    INTRA-FRAME DECODING METHOD AND APPARATUS FOR SIGNAL COMPONENT SAMPLING POINT OF IMAGE BLOCK
    19.
    发明申请
    INTRA-FRAME DECODING METHOD AND APPARATUS FOR SIGNAL COMPONENT SAMPLING POINT OF IMAGE BLOCK 有权
    图像块信号分量采样点帧内解码方法及装置

    公开(公告)号：US20140233641A1

    公开(公告)日：2014-08-21

    申请号：US14265491

    申请日：2014-04-30

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Haitao Yang ,  Jiantong Zhou ,  Oscar Au

    IPC: H04N19/593 ,  H04N19/44 ,  H04N19/46 ,  H04N19/103 ,  H04N19/176

    CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/70

    Abstract: Embodiments of the present invention provide an intra-frame decoding method and apparatus for a signal component sampling point of an image block. The method includes: obtaining prediction mode information about a first signal component of a current block from a video code stream; determining a prediction mode for the first signal component of the current block, where the prediction mode for the first signal component of the current block is one of a DM mode and an LM mode; obtaining a prediction value of a first signal component sampling point of the current block according to the prediction mode for the first signal component of the current block; and obtaining a reconstruction value of the first signal component sampling point of the current block. The technical solutions provided by the embodiments of the present invention reduce complexity of implementing a decoding end.

    Abstract translation: 本发明的实施例提供了一种用于图像块的信号分量采样点的帧内解码方法和装置。 该方法包括：从视频码流获取关于当前块的第一信号分量的预测模式信息; 确定当前块的第一信号分量的预测模式，其中当前块的第一信号分量的预测模式是DM模式和LM模式之一; 根据当前块的第一信号分量的预测模式，获得当前块的第一信号分量采样点的预测值; 并获得当前块的第一信号分量采样点的重构值。 由本发明的实施例提供的技术方案降低了实现解码端的复杂度。

    Encoding or decoding method and apparatus
    20.
    发明授权
    Encoding or decoding method and apparatus 有权
    编码或解码方法和装置

    公开(公告)号：US08804827B2

    公开(公告)日：2014-08-12

    申请号：US14102186

    申请日：2013-12-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Haitao Yang ,  Jiantong Zhou

    IPC: H04N7/50

    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.

    Abstract translation: 本发明的实施例提供一种编码或解码方法和装置。 该方法包括：提取比特流中的第一信息; 根据第一信息确定色度分量帧内预测模式; 当色度分量帧内预测模式不能根据第一信息确定时，提取比特流中的第二信息; 以及根据所述第二信息确定所述色度分量帧内预测模式，其中所述第一信息包括用于指示所述色度分量帧内预测模式是DM模式还是LM模式的信息，所述第二信息用于将剩余模式指示为 色度分量帧内预测模式，并且剩余模式是可以根据第一信息确定的模式之外的可用色度分量帧内预测模式之一。

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