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    Intra-Frame Prediction and Decoding Methods and Apparatuses for Image Signal
    3.
    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。

    Transformation mode encoding and decoding method and apparatus
    4.
    发明授权
    Transformation mode encoding and decoding method and apparatus 有权
    转换模式编解码方法及装置

    公开(公告)号：US09462274B2

    公开(公告)日：2016-10-04

    申请号：US14266149

    申请日：2014-04-30

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jin Song ,  Jiantong Zhou

    IPC: H04N7/32 ,  H04N19/61 ,  H04N19/159 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/122

    CPC classification number: H04N19/61 ,  H04N19/122 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

    Abstract: Embodiments of the present invention disclose a transformation mode encoding and decoding method and apparatus. A correlation between the prediction mode and the transformation mode is used, and an optimal transformation mode candidate set is simplified, thereby saving resources when an index of an optimal transformation mode is encoded in encoding header information. In addition, encoding efficiency is higher when an encoding end elects a transformation mode.

    Abstract translation: 本发明的实施例公开了一种变换模式编码和解码方法和装置。 使用预测模式和变换模式之间的相关性，并且简化了最佳变换模式候选集合，从而在编码头信息中编码最佳变换模式的索引时节省资源。 此外，当编码端选择变换模式时，编码效率更高。

    IMAGE COMPRESSION METHOD AND APPARATUS
    5.
    发明申请
    IMAGE COMPRESSION METHOD AND APPARATUS 有权
    图像压缩方法和装置

    公开(公告)号：US20160277746A1

    公开(公告)日：2016-09-22

    申请号：US15165517

    申请日：2016-05-26

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Jiali Fu ,  Jiantong Zhou ,  Sixin Lin

    IPC: H04N19/154 ,  H04N19/18 ,  H04N19/124

    CPC classification number: H04N19/154 ,  H04N19/124 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/40 ,  H04N19/48

    Abstract: The present invention relates to an image compression method and apparatus, where the image compression method includes a step of performing amplitude decreasing processing on a frequency domain coefficient or a quantization coefficient of a to-be-processed image. The image compression method includes: determining a texture direction of the to-be-processed image; and performing amplitude decreasing processing on the frequency domain coefficient or the quantization coefficient of the to-be-processed image according to the texture direction, where the frequency domain coefficient is a coefficient obtained after the image is transformed, and the quantization coefficient is a coefficient obtained after the frequency domain coefficient is quantized. According to embodiments of the present invention, amplitude decreasing processing is performed on a frequency domain coefficient of a to-be-processed image according to a texture direction of the to-be-processed image, which can improve the compression efficiency without affecting subjective quality of the to-be-processed image.

    Abstract translation: 图像压缩方法和装置技术领域本发明涉及图像压缩方法和装置，其中图像压缩方法包括对频域系数或待处理图像的量化系数执行幅度减小处理的步骤。 图像压缩方法包括：确定待处理图像的纹理方向; 并且根据纹理方向对频域系数或待处理图像的量化系数进行幅度减小处理，其中频域系数是在图像被变换之后获得的系数，并且量化系数是系数 在频域系数被量化之后获得。 根据本发明的实施例，根据待处理图像的纹理方向对被处理图像的频域系数进行幅度降低处理，这可以提高压缩效率而不影响主观质量 的待处理图像。

    Method and device for generating a predicted value of an image using interpolation and motion vectors
    7.
    发明授权
    Method and device for generating a predicted value of an image using interpolation and motion vectors 有权
    使用内插和运动矢量生成图像的预测值的方法和装置

    公开(公告)号：US09324165B2

    公开(公告)日：2016-04-26

    申请号：US13738773

    申请日：2013-01-10

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N7/12 ,  G06T9/00 ,  H04N19/56 ,  H04N19/149 ,  H04N19/109 ,  H04N19/117 ,  H04N19/53 ,  H04N19/523 ,  H04N19/577

    CPC classification number: H04N19/109 ,  G06T9/004 ,  H04N19/117 ,  H04N19/149 ,  H04N19/523 ,  H04N19/53 ,  H04N19/56 ,  H04N19/577

    Abstract: A method and device for generating a predicted value of image that are mostly used to generate a predicted value of a current block during image encoding or decoding. The method includes: determining a searching scope, wherein multiple motion vectors are included in the searching scope; performing up-sampling interpolations on first reference blocks, corresponding to the motion vector in the searching scope, in a reference image of the current block by using a first filter to obtain up-sampled first reference blocks; by using the up-sampled first reference blocks, obtaining at least one candidate motion vector corresponding to the current block; performing up-sampling interpolations on second reference blocks, corresponding to the at least one candidate motion vector, in the reference image of the current block by using a second filter to obtain up-sampled second reference blocks; combining the up-sampled second reference blocks to obtain a predicted value of the current block.

    Abstract translation: 一种用于在图像编码或解码期间生成主要用于生成当前块的预测值的图像的预测值的方法和装置。 该方法包括：确定搜索范围，其中多个运动矢量包括在搜索范围内; 通过使用第一滤波器来获取上采样的第一参考块，在当前块的参考图像中对与搜索范围中的运动矢量相对应的第一参考块执行向上采样内插; 通过使用上采样的第一参考块，获得与当前块相对应的至少一个候选运动矢量; 通过使用第二滤波器来获取上采样的第二参考块，在当前块的参考图像中对应于至少一个候选运动矢量的第二参考块上执行上取样内插; 组合上采样的第二参考块以获得当前块的预测值。

    Motion prediction or compensation method
    8.
    发明授权
    Motion prediction or compensation method 有权
    运动预测或补偿方法

    公开(公告)号：US09288492B2

    公开(公告)日：2016-03-15

    申请号：US13947681

    申请日：2013-07-22

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H04N19/52 ,  H04N19/533 ,  H04N19/56 ,  H04N19/523

    CPC classification number: H04N19/533 ,  H04N19/52 ,  H04N19/523 ,  H04N19/56

    Abstract: Embodiments of the present invention provide a motion prediction or compensation method during a video coding and decoding process. A motion prediction or compensation method provided in the embodiments of the present invention includes: acquiring a candidate motion vector set; conducting a refined search for an optimal motion vector based on information of the candidate motion vector set; and performing motion prediction or compensation by using the motion vector acquired by the refined search. This improves coding performance and meanwhile maintains reasonable complexity.

    Abstract translation: 本发明的实施例在视频编码和解码过程中提供运动预测或补偿方法。 本发明实施例提供的运动预测或补偿方法包括：获取候选运动矢量集; 基于候选运动矢量集的信息进行精确搜索最优运动矢量; 以及通过使用由精细搜索获得的运动矢量来执行运动预测或补偿。 这提高了编码性能，同时保持了合理的复杂性。

    IMAGE CODING AND DECODING METHODS AND APPARATUSES
    9.
    发明申请
    IMAGE CODING AND DECODING METHODS AND APPARATUSES 有权
    图像编码和解码方法和设备

    公开(公告)号：US20140241423A1

    公开(公告)日：2014-08-28

    申请号：US14268115

    申请日：2014-05-02

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Haitao Yang ,  Jiantong Zhou

    IPC: H04N19/126 ,  H04N19/91 ,  H04N19/61

    CPC classification number: H04N19/61 ,  H04N19/126 ,  H04N19/136 ,  H04N19/176 ,  H04N19/463 ,  H04N19/91

    Abstract: An embodiment of the present invention provides an image coding method, where the coding method includes: performing predictive coding on an image; performing transform coding on the image on which the predictive coding has been performed; performing, by using a quantization matrix, quantization coding on the image on which the transform coding has been performed, where the quantization matrix is a matrix reflecting image quantization step information, the quantization matrix includes an M*N quantization matrix and an N*M quantization matrix, and the N*M quantization matrix is obtained by transposing the M*N quantization matrix; and performing entropy coding on the image on which the quantization coding has been performed, and coding the M*N quantization matrix, so as to generate a code stream. In the present invention, the number of bits required for coding a quantization matrix is effectively saved, thereby improving compression efficiency.

    Abstract translation: 本发明的实施例提供一种图像编码方法，其中编码方法包括：对图像执行预测编码; 对已进行了预测编码的图像执行变换编码; 通过使用量化矩阵对已经进行了变换编码的图像进行量化编码，其中量化矩阵是反映图像量化步长信息的矩阵，量化矩阵包括M * N量化矩阵和N * M 量化矩阵，并通过转置M * N量化矩阵获得N * M量化矩阵; 对已进行了量化编码的图像进行熵编码，对M * N量化矩阵进行编码，生成码流。 在本发明中，有效地节省了编码量化矩阵所需的比特数，从而提高了压缩效率。

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