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1. 发明授权

US10097826B2 Method and device for generating a predicted value of an image using interpolation and motion vectors 有权
公开(公告)号：US10097826B2
公开(公告)日：2018-10-09
申请号：US15864493
申请日：2018-01-08
申请人： Huawei Technologies Co., Ltd.
发明人： Sixin Lin , Mingyuan Yang , Haoping Yu , Jiantong Zhou , Cunbin Pan
IPC分类号： H04N7/12 , H04N19/109 , G06T9/00 , H04N19/56 , H04N19/149 , H04N19/117 , H04N19/53 , H04N19/523 , H04N19/577
摘要： A method and device for generating a predicted value of image to generate a predicted value of a current block during image encoding or decoding is disclosed, where the method includes determining a searching scope, wherein a plurality of 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 using a first filter to obtain up-sampled first reference blocks, obtaining, using the up-sampled first reference blocks, 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 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.

2. 发明授权

US09888245B2 Image compression method and apparatus for performing amplitude decreasing processing 有权
公开(公告)号：US09888245B2
公开(公告)日：2018-02-06
申请号：US15165517
申请日：2016-05-26
申请人： Huawei Technologies Co., Ltd.
发明人： Jiali Fu , Jiantong Zhou , Sixin Lin
IPC分类号： G06K9/36 , H04N19/154 , H04N19/176 , H04N19/132 , H04N19/14 , H04N19/48 , H04N19/124 , H04N19/18 , H04N19/40
CPC分类号： H04N19/154 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/40 , H04N19/48
摘要： 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.

3. 发明申请

US20160373765A1 Intra-Frame Prediction and Decoding Methods and Apparatuses for Image Signal 有权
标题翻译：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
申请人： Huawei Technologies Co., Ltd.
发明人： Xingyu Zhang , Oscar Au , Haitao Yang , Jiantong Zhou
IPC分类号： H04N19/159 , H04N19/105 , H04N19/593
CPC分类号： H04N19/159 , H04N19/105 , H04N19/14 , H04N19/176 , H04N19/186 , H04N19/59 , H04N19/593
摘要： 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.
摘要翻译：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。

4. 发明授权

US09462274B2 Transformation mode encoding and decoding method and apparatus 有权
标题翻译：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
申请人： Huawei Technologies Co., Ltd.
发明人： Jin Song , Jiantong Zhou
IPC分类号： H04N7/32 , H04N19/61 , H04N19/159 , H04N19/176 , H04N19/147 , H04N19/46 , H04N19/122
CPC分类号： H04N19/61 , H04N19/122 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/46
摘要： 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.
摘要翻译：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。

5. 发明申请

US20160277746A1 IMAGE COMPRESSION METHOD AND APPARATUS 有权
标题翻译：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
申请人： Huawei Technologies Co., Ltd.
发明人： Jiali Fu , Jiantong Zhou , Sixin Lin
IPC分类号： H04N19/154 , H04N19/18 , H04N19/124
CPC分类号： H04N19/154 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/40 , H04N19/48
摘要： 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.
摘要翻译：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。

6. 发明授权

US09325993B2 Encoding or decoding method and apparatus 有权
公开(公告)号：US09325993B2
公开(公告)日：2016-04-26
申请号：US14317083
申请日：2014-07-25
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Haitao Yang , Bin Li , Houqiang Li , Jiantong Zhou
IPC分类号： H04N7/50 , H04N19/11 , H04N19/176 , H04N19/46 , H04N19/186 , H04N19/44 , H04N19/593
CPC分类号： H04N19/11 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/44 , H04N19/46 , H04N19/463 , H04N19/593
摘要： 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.

7. 发明授权

US09324165B2 Method and device for generating a predicted value of an image using interpolation and motion vectors 有权
标题翻译：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
申请人： Huawei Technologies Co., Ltd.
发明人： Sixin Lin , Mingyuan Yang , Haoping Yu , Jiantong Zhou , Cunbin Pan
IPC分类号： H04N7/12 , G06T9/00 , H04N19/56 , H04N19/149 , H04N19/109 , H04N19/117 , H04N19/53 , H04N19/523 , H04N19/577
CPC分类号： H04N19/109 , G06T9/004 , H04N19/117 , H04N19/149 , H04N19/523 , H04N19/53 , H04N19/56 , H04N19/577
摘要： 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.
摘要翻译：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。

8. 发明授权

US09288492B2 Motion prediction or compensation method 有权
标题翻译：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
申请人： Huawei Technologies Co., Ltd.
发明人： Sixin Lin , Mingyuan Yang , Jiantong Zhou , Haoping Yu
IPC分类号： H04N19/52 , H04N19/533 , H04N19/56 , H04N19/523
CPC分类号： H04N19/533 , H04N19/52 , H04N19/523 , H04N19/56
摘要： 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.
摘要翻译：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。

9. 发明申请

US20140241423A1 IMAGE CODING AND DECODING METHODS AND APPARATUSES 有权
标题翻译：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
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Haitao Yang , Jiantong Zhou
IPC分类号： H04N19/126 , H04N19/91 , H04N19/61
CPC分类号： H04N19/61 , H04N19/126 , H04N19/136 , H04N19/176 , H04N19/463 , H04N19/91
摘要： 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.
摘要翻译：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。

10. 发明授权

US11310524B2 Method and apparatus for determining motion vector of affine code block 有权
公开(公告)号：US11310524B2
公开(公告)日：2022-04-19
申请号：US16858222
申请日：2020-04-24
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Huanbang Chen , Haitao Yang , Shan Gao , Jiantong Zhou , Shan Liu
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04 , H04N19/52 , H04N19/61 , H04N19/82
摘要： A method includes obtaining a first motion vector of a motion compensation unit included in an affine code block. The method also includes determining a second motion vector based on the first motion vector, where a precision of the second motion vector matches a motion vector precision of a storage unit corresponding to the motion compensation unit. The method further includes determining a third motion vector based on the second motion vector, where there is a preset correspondence between the third motion vector and the second motion vector, and the third motion vector is used for subsequent encoding/decoding processing.

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