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    Motion-Compensated Prediction Method and Apparatus
    52.
    发明申请
    Motion-Compensated Prediction Method and Apparatus 审中-公开

    公开(公告)号：US20190230377A1

    公开(公告)日：2019-07-25

    申请号：US16371486

    申请日：2019-04-01

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xiang Ma ,  Haitao Yang

    IPC: H04N19/52 ,  H04N19/182

    Abstract: Embodiments of this application provide a motion-compensated prediction method which includes determining a location that is of an initial reference pixel of a current pixel and that is in a reference image, where the current pixel is located in a first sub-image in the current image; when the initial reference pixel is located outside a second sub-image that is in the reference image and that is at a location corresponding to the first sub-image, determining, based on the location of the initial reference pixel, a location that is of a target reference pixel of the current pixel and that is in the reference image; and determining a prediction value of a pixel value of the current pixel based on a pixel value of the target reference pixel and/or a pixel value of a neighboring pixel of the target reference pixel.

    Image processing method and apparatus
    53.
    发明授权
    Image processing method and apparatus 有权

    公开(公告)号：US10291935B2

    公开(公告)日：2019-05-14

    申请号：US15645052

    申请日：2017-07-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang

    IPC: G06K9/62 ,  H04N19/60 ,  H04N19/18 ,  H04N19/182 ,  H04N19/50 ,  H04N19/61 ,  H04N19/136 ,  H04N19/80

    Abstract: An image processing method and apparatus includes transforming a first image to obtain a first transform coefficient set; transforming a second image, or transforming a difference image between the first image and a second image, to obtain a second transform coefficient set; selecting a first group of transform coefficients from the first transform coefficient set according to magnitudes of transform coefficients in the first transform coefficient set, where magnitudes of transform coefficients in the first group of transform coefficients meet a preset threshold condition; determining an image difference between the first image and the second image according to the first group of transform coefficients and the second transform coefficient set; and processing the first image and the second image according to the image difference.

    IMAGE ENCODING METHOD AND APPARATUS, AND IMAGE DECODING METHOD AND APPARATUS
    54.
    发明申请
    IMAGE ENCODING METHOD AND APPARATUS, AND IMAGE DECODING METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20180376161A1

    公开(公告)日：2018-12-27

    申请号：US16054306

    申请日：2018-08-03

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Huanbang Chen ,  Sixin Lin ,  Haitao Yang

    IPC: H04N19/52 ,  H04N19/157 ,  H04N19/139 ,  H04N19/124

    Abstract: An image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit; generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.

    Transform Coefficient Dequantization Method and Apparatus, and Decoding Device
    56.
    发明申请
    Transform Coefficient Dequantization Method and Apparatus, and Decoding Device 审中-公开

    公开(公告)号：US20180255301A1

    公开(公告)日：2018-09-06

    申请号：US15970638

    申请日：2018-05-03

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang

    IPC: H04N19/124 ,  H04N19/44 ,  H04N19/122 ,  H04N19/18 ,  H04N19/91

    CPC classification number: H04N19/124 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/91

    Abstract: A unit size of a to-be-processed unit corresponding to a first transform coefficient set is determined using division information. Then, a quantization regulation factor for the first transform coefficient set is determined according to a first preset algorithm and the unit size of the to-be-processed unit, and with the first preset algorithm, the quantization regulation factor decreases progressively with the size of the to-be-processed unit. Dequantization processing is performed on a transform coefficient in the first transform coefficient set according to a second preset algorithm using the quantization regulation factor. Therefore, a decoding device adaptively determines the quantization regulation factor for the first transform coefficient set according to the unit size of the to-be-processed unit, and then performs dequantization processing on the transform coefficient in the first transform coefficient set using the determined quantization regulation factor.

    Image Processing Method and Apparatus
    58.
    发明申请
    Image Processing Method and Apparatus 审中-公开

    公开(公告)号：US20170310998A1

    公开(公告)日：2017-10-26

    申请号：US15645052

    申请日：2017-07-10

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yin Zhao ,  Haitao Yang

    IPC: H04N19/60 ,  H04N19/18 ,  H04N19/182 ,  H04N19/50

    CPC classification number: H04N19/60 ,  H04N19/136 ,  H04N19/18 ,  H04N19/182 ,  H04N19/50 ,  H04N19/61 ,  H04N19/80

    Abstract: An image processing method and apparatus includes transforming a first image to obtain a first transform coefficient set; transforming a second image, or transforming a difference image between the first image and a second image, to obtain a second transform coefficient set; selecting a first group of transform coefficients from the first transform coefficient set according to magnitudes of transform coefficients in the first transform coefficient set, where magnitudes of transform coefficients in the first group of transform coefficients meet a preset threshold condition; determining an image difference between the first image and the second image according to the first group of transform coefficients and the second transform coefficient set; and processing the first image and the second image according to the image difference.

    Intra-Frame Prediction and Decoding Methods and Apparatuses for Image Signal
    59.
    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：US20160373765A1

    公开(公告)日：2016-12-22

    申请号：US15254669

    申请日：2016-09-01

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/593

    CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/14 ,  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.

    Abstract translation: 帧内解码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。

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