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61. 发明公开

EP3468199A1 ENCODING AND DECODING METHOD AND DEVICE 有权
公开(公告)号：EP3468199A1
公开(公告)日：2019-04-10
申请号：EP17819205.0
申请日：2017-06-26
申请人： Huawei Technologies Co., Ltd.
发明人： MA, Xiang , YANG, Haitao
IPC分类号： H04N19/61
摘要： The present invention provides a decoding method applied to the field of video processing. The decoding method includes: receiving an encoded bitstream of a two-dimensional panorama picture, and determining an applicable spatial layout format of the two-dimensional panorama picture; parsing the encoded bitstream of the two-dimensional panorama picture, to determine whether a spatial position relationship between sub-pictures in the two-dimensional panorama picture in the applicable spatial layout format is a default spatial position relationship; and decoding the encoded bitstream of the two-dimensional panorama picture based on the applicable spatial layout format and the default spatial position relationship if the spatial position relationship between the sub-pictures in the two-dimensional panorama picture in the applicable spatial layout format is the default spatial position relationship.

62. 发明公开

EP3457697A1 METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO IMAGE 有权
公开(公告)号：EP3457697A1
公开(公告)日：2019-03-20
申请号：EP17812698.3
申请日：2017-06-13
申请人： Huawei Technologies Co., Ltd. , University of Science and Technology of China
发明人： YANG, Haitao , LI, Li , LI, Houqiang
IPC分类号： H04N19/59 , H04N19/119 , H04N19/80 , H04N19/44 , H04N19/597 , H04N19/70 , H04N19/33
摘要： Embodiments of the present invention provide a video image encoding method and apparatus, and a video image decoding method and apparatus. The video image decoding method includes: parsing a high-resolution image bitstream, to generate a reconstructed image of a first-type sub-image and auxiliary information of the first-type sub-image, where the auxiliary information represents dimension information of the sub-image and position information of the sub-image in a decoder to-be-reconstructed image, the sub-image is a pixel set of any continuous area in the decoder to-be-reconstructed image, and sub-images of the decoder to-be-reconstructed image do not overlap with each other; when a complete decoder reconstructed image fails to be obtained based on the reconstructed image of the first-type sub-image, parsing a low-resolution image bitstream, to generate a reconstructed image of a second-type sub-image, where the second-type sub-image has a resolution the same as that of the first-type sub-image; and splicing the reconstructed image of the first-type sub-image and the reconstructed image of the second-type sub-image based on the auxiliary information, to generate the decoder reconstructed image.

63. 发明公开

EP3334160A1 METHOD AND APPARATUS FOR DE-QUANTIZATION OF TRANSFORM COEFFICIENTS, AND DECODING DEVICE 审中-公开
公开(公告)号：EP3334160A1
公开(公告)日：2018-06-13
申请号：EP15907652.0
申请日：2015-11-06
申请人： Huawei Technologies Co., Ltd.
发明人： ZHAO, Yin , YANG, Haitao
IPC分类号： H04N19/124 , H04N19/176 , H04N19/157
CPC分类号： H04N19/124 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/18 , H04N19/44 , H04N19/91
摘要： The present invention discloses a transform coefficient dequantization method. A unit size of a to-be-processed unit corresponding to a first transform coefficient set is determined by using division information. Then, a quantization regulation factor for a 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 by using the quantization regulation factor. Based on the transform coefficient dequantization method disclosed in the present invention, 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 by using the determined quantization regulation factor. A code stream sent by the coding device does not need to carry quantization step size regulation information, and therefore coding efficiency can be improved. The present invention further discloses a corresponding apparatus and a decoding device.

64. 发明公开

EP3236658A1 IMAGE PROCESSING METHOD AND DEVICE 有权
标题翻译：图像处理方法和装置
公开(公告)号：EP3236658A1
公开(公告)日：2017-10-25
申请号：EP16734909.1
申请日：2016-01-06
申请人： Huawei Technologies Co., Ltd.
发明人： ZHAO, Yin , YANG, Haitao
IPC分类号： H04N19/60
CPC分类号： H04N19/60 , H04N19/136 , H04N19/18 , H04N19/182 , H04N19/50 , H04N19/61 , H04N19/80
摘要： An image processing method and apparatus are disclosed. The method 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. An image difference determined in embodiments can well reflect a difference degree between two images, so that subsequent image processing based on the image difference is more accurate.
摘要翻译：公开了一种图像处理方法和装置。该方法包括：变换第一图像以获得第一变换系数集; 变换第二图像或变换第一图像与第二图像之间的差异图像以获得第二变换系数集合; 根据所述第一变换系数集合中的变换系数的大小，从所述第一变换系数集合中选择第一变换系数组，其中所述第一变换系数组中的变换系数的大小满足预设阈值条件; 根据所述第一组变换系数和所述第二变换系数组确定所述第一图像与所述第二图像之间的图像差异; 以及根据图像差异处理第一图像和第二图像。在实施例中确定的图像差异可以很好地反映两个图像之间的差异程度，使得基于图像差异的后续图像处理更准确。

65. 发明公开

EP3139607A1 TEMPLATE MATCHING-BASED INTRA-PREDICTION CODING AND DECODING AND ARRAY SCANNING METHOD AND DEVICE 有权
标题翻译：新加坡公民权利和政治权利国际公约
公开(公告)号：EP3139607A1
公开(公告)日：2017-03-08
申请号：EP15799249.6
申请日：2015-05-28
申请人： Huawei Technologies Co. Ltd.
发明人： HUANG, Xin , YANG, Haitao
IPC分类号： H04N19/11
CPC分类号： H04N19/593 , H04N19/11 , H04N19/124 , H04N19/129 , H04N19/147 , H04N19/157 , H04N19/176 , H04N19/182
摘要： According to intra-frame predictive coding and decoding methods based on template matching, an array scanning method and apparatus, and an apparatus that are disclosed in embodiments of the present invention, templates of at least two shapes are used to calculate predicted pixel values of a to-be-predicted unit. Intra-frame prediction based on template matching is performed based on a correlation between a texture of a template region and a texture of a to-be-predicted unit. Compared with a template of a single shape, templates of different shapes can represent different textures; when a correlation between a texture of a template of a shape and a texture of a to-be-predicted unit is low, a template of another shape may be selected and used, and a matching degree between a texture of a template and a texture of a to-be-predicted unit can be increased. In this way, an optimal predicted pixel value is determined from at least two predicted pixel values, and accuracy of the optimal predicted pixel value is higher than accuracy of a predicted pixel value determined by using a template of a single shape.
摘要翻译：根据基于模板匹配的帧内预测编码和解码方法，阵列扫描方法和装置以及在本发明的实施例中公开的装置，使用至少两个形状的模板来计算预测像素值预测单位。基于模板匹配的帧内预测是基于模板区域的纹理与待预测单元的纹理之间的相关性执行的。与单一形状的模板相比，不同形状的模板可以表示不同的纹理; 当形状的模板的纹理与待预测单元的纹理之间的相关性低时，可以选择和使用另一种形状的模板，以及模板的纹理与纹理之间的匹配度可以增加待预测的单位。以这种方式，从至少两个预测像素值确定最佳预测像素值，并且最佳预测像素值的精度高于通过使用单个形状的模板确定的预测像素值的精度。

66. 发明公开

EP3094091A1 CODING AND DECODING METHOD AND DEVICE 审中-公开
标题翻译： CODIERUNGS- UND DECODIERUNGSVERFAHREN UND VORRICHTUNG
公开(公告)号：EP3094091A1
公开(公告)日：2016-11-16
申请号：EP15752321.8
申请日：2015-02-02
申请人： Huawei Technologies Co., Ltd.
发明人： YANG, Haitao , ZHENG, Amin , YUAN, Yuan , AU, Oscar
IPC分类号： H04N19/174 , H04N19/129 , H04N19/593 , H04N19/146
CPC分类号： H04N19/174 , H04N19/129 , H04N19/146 , H04N19/184 , H04N19/593
摘要： Encoding and decoding methods and apparatuses are disclosed, which can fully utilize a spatial correlation in video information, thereby improving compression efficiency during encoding and decoding. The method includes: determining, according to a total coding cost of a target image, a first processing order of multiple code blocks groups included in the target image; encoding a code blocks group of the multiple code blocks groups according to the first processing order, to generate a bitstream; and writing the first processing order to the bitstream. A first processing order of multiple code blocks groups included in a target image is determined according to a total coding cost of the target image, and the multiple code blocks groups are encoded and decoded according to the first processing order, so that a spatial correlation in video information can be fully utilized, thereby improving compression efficiency during encoding and decoding.
摘要翻译：公开了可以充分利用视频信息中的空间相关性的编码和解码方法和装置，从而在编码和解码期间提高压缩效率。该方法包括：根据目标图像的总编码成本确定包括在目标图像中的多个码块组的第一处理顺序; 根据第一处理顺序对多个代码块组的代码块组进行编码，生成比特流; 以及将所述第一处理顺序写入所述比特流。根据目标图像的总编码成本来确定包含在目标图像中的多个码块组的第一处理顺序，并且根据第一处理顺序对多个码块组进行编码和解码，从而在可以充分利用视频信息，从而提高编码和解码期间的压缩效率。

67. 发明公开

EP2750386A1 IMAGE CODING AND DECODING METHOD AND DEVICE 审中-公开
标题翻译：一种图像编码和解码方法和设备
公开(公告)号：EP2750386A1
公开(公告)日：2014-07-02
申请号：EP12846329.6
申请日：2012-11-05
申请人： Huawei Technologies Co., Ltd.
发明人： YANG, Haitao , ZHOU, Jiantong
IPC分类号： H04N7/26
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.

68. 发明公开

EP2672707A1 ENCODING METHOD AND DEVICE, AND DECODING METHOD AND DEVICE 审中-公开
标题翻译： KODIERUNGSVERFAHREN UND -VORRICHTUNG SOWIE DEKODIERUNGSVERFAHREN UND -VORRICHTUNG
公开(公告)号：EP2672707A1
公开(公告)日：2013-12-11
申请号：EP11861079.9
申请日：2011-10-21
申请人： Huawei Technologies Co., Ltd.
发明人： YANG, Haitao , PANG, Chao , OU, Zilian
IPC分类号： H04N7/32
CPC分类号： H04N19/124 , H04N19/115 , H04N19/149 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/96
摘要： An encoding method and device, a decoding method and device, and an encoding/decoding system are provided. The method includes: obtaining, by an encoder, data to be encoded, where the data to be encoded is at least one LCU; determining, by the encoder, a quantization depth parameter of the LCU according to a preset bit rate control algorithm, and adding the quantization depth parameter into the data to be encoded; determining, by the encoder, a QP of each CU according to a size of a minimum picture block and a size of each CU included in the LCU; calculating, by the encoder, a QP difference of each CU according to the QP of each CU and a QP prediction value of each CU; for each CU that satisfies a preset condition, carrying, by the encoder, the QP difference of the CU in the CU; and encoding, by the encoder, the quantization depth parameter, the QP difference of the CU that satisfies the preset condition, and each CU to obtain a bit stream. A decoding method and an encoding/decoding device are also provided.
摘要翻译：提供了编码方法和装置，解码方法和装置以及编码/解码系统。该方法包括：由编码器获取待编码的数据，其中待编码的数据是至少一个LCU; 根据预设的比特率控制算法，由编码器确定LCU的量化深度参数，并将量化深度参数加到待编码的数据中; 根据所述LCU中包含的最小图像块的大小和每个CU的大小，由所述编码器确定每个CU的QP; 根据每个CU的QP和每个CU的QP预测值，由编码器计算每个CU的QP差; 对于满足预设条件的每个CU，由编码器携带CU中的CU的QP差; 并且由编码器对量化深度参数，满足预设条件的CU的QP差和每个CU编码以获得比特流。还提供了解码方法和编码/解码装置。

69. 发明公开

EP4432672A2 CHROMA BLOCK PREDICTION METHOD AND DEVICE 审中-实审
公开(公告)号：EP4432672A2
公开(公告)日：2024-09-18
申请号：EP24167959.6
申请日：2019-09-05
申请人： Huawei Technologies Co., Ltd.
发明人： MA, Xiang , YANG, Haitao , CHEN, Jianle
IPC分类号： H04N19/80
CPC分类号： H04N19/186 , H04N19/117 , H04N19/70
摘要： The present invention provides a chroma block prediction method and a device. The method includes: parsing a bitstream to obtain first indication information, where the first indication information is used to indicate a filter type; downsampling a first luma block by using a filter corresponding to the filter type, to obtain a second luma block, where the first luma block is a luma block corresponding to a current chroma block; obtaining a template chroma sample and a template luma sample, where the template chroma sample includes a plurality of neighboring chroma samples of the current chroma block, and the template luma sample is obtained by performing a downsampling operation on a plurality of neighboring luma samples of the first luma block; obtaining linear model coefficients based on the template chroma sample and the template luma sample; and obtaining a prediction value of the current chroma block based on the second luma block and the linear model coefficients.

70. 发明公开

EP4369711A3 MOTION VECTOR OBTAINING METHOD AND APPARATUS 审中-实审
公开(公告)号：EP4369711A3
公开(公告)日：2024-07-17
申请号：EP24150170.9
申请日：2019-06-04
申请人： Huawei Technologies Co., Ltd.
发明人： CHEN, Huanbang , ZHAO, Yin , YANG, Haitao , CHEN, Jianle
IPC分类号： H04N19/513 , H04N19/433 , H04N19/105 , H04N19/139 , H04N19/176
CPC分类号： H04N19/513 , H04N19/176 , H04N19/105 , H04N19/139 , H04N19/433
摘要： This application provides a motion vector obtaining method and apparatus. The method includes: determining a first value range and a second value range; determining a target offset vector of a to-be-processed block and identifier information of a target picture, where the to-be-processed block includes at least one to-be-processed sub-block, a value of a component of the target offset vector in a first direction falls within the first value range, a value of a component of the target offset vector in a second direction falls within the second value range, and the first direction and the second direction are in an orthogonal relationship; determining, in the target picture based on a location of the to-be-processed sub-block and the target offset vector, a collocated sub-block of the to-be-processed sub-block; and determining a motion vector of the to-be-processed sub-block based on a motion vector of the collocated sub-block. In this application, a range of the target offset vector is limited, so that a quantity of memory read times can be reduced in a process of obtaining the motion vector of the collocated sub-block.

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