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1. 发明公开

EP3334160A4 METHOD AND APPARATUS FOR DE-QUANTIZATION OF TRANSFORM COEFFICIENTS, AND DECODING DEVICE 审中-公开
公开(公告)号：EP3334160A4
公开(公告)日：2018-06-13
申请号：EP15907652
申请日：2015-11-06
申请人： HUAWEI TECH CO LTD
发明人： ZHAO YIN , YANG HAITAO
IPC分类号： H04N19/124 , H04N19/157 , H04N19/176
CPC分类号： H04N19/124 , H04N19/157 , H04N19/176
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.

2. 发明公开

EP3328085A4 MOTION VECTOR FIELD CODING METHOD AND DECODING METHOD, AND CODING AND DECODING APPARATUSES 有权
公开(公告)号：EP3328085A4
公开(公告)日：2018-05-30
申请号：EP15901942
申请日：2015-08-24
申请人： HUAWEI TECH CO LTD
发明人： ZHANG HONG , YANG HAITAO
IPC分类号： H04N19/52 , H04N19/567 , H04N19/573
CPC分类号： H04N19/573 , H04N19/174 , H04N19/31 , H04N19/40 , H04N19/52 , H04N19/53 , H04N19/537 , H04N19/567 , H04N19/577
摘要： Disclosed are a motion vector field coding method and decoding method, and coding and decoding apparatuses. The method in embodiments of the present invention comprises: acquiring an original signal of a current motion vector field block, the current motion vector field block being obtained after partitioning a current motion vector field, and the current motion vector field being a motion vector field corresponding to a video frame at a time t; acquiring a predictive signal of the current motion vector field block and predictive information of the current motion vector field block, the predicative information being used for indicating information needed for acquiring the predictive signal; calculating a predictive residual signal of the current motion vector field block according to the predictive signal and the original signal, the predictive residual signal being used for indicating a residual between the original signal and the predictive signal; and writing the predictive information and the predictive residual signal into a code stream. The embodiments of the present invention can improve the compression efficiency of a motion vector field.

3. 发明公开

EP3306934A4 IMAGE PREDICTION METHOD AND RELATED DEVICE 审中-公开
公开(公告)号：EP3306934A4
公开(公告)日：2018-05-23
申请号：EP16820779
申请日：2016-06-29
申请人： HUAWEI TECH CO LTD
发明人： LIN SIXIN , HUANG RUOPU , YANG HAITAO
IPC分类号： H04N19/51 , H04N19/513 , H04N19/523 , H04N19/537 , H04N19/54
CPC分类号： H04N19/52 , H04N19/159 , H04N19/176 , H04N19/513 , H04N19/523 , H04N19/537 , H04N19/56
摘要： A picture prediction method and a related apparatus are disclosed. The picture prediction method includes: determining motion vectors of W control points in a current picture block; obtaining, by means of calculation, motion vectors of P pixel units of the current picture block by using a motion model and the motion vectors of the W control points, where precision of the determined motion vectors of the W control points is 1/n of pixel precision, precision of a motion vector that is obtained by means of calculation and that is of each of the P pixel units is 1/N of the pixel precision, the P pixel units are some or all of pixel units of the current picture block, and N is greater than n; and performing interpolation filtering on a pixel of a corresponding reference pixel unit, in a reference picture, of each of the P pixel units by using an interpolation filter with a phase of Q, to obtain a predicted pixel value of each of the P pixel units, where Q is greater than n. Technical solutions provided in embodiments of the present invention help reduce calculation complexity during a picture prediction process.

4. 发明公开

EP2768222A4 INTRA-FRAME DECODING METHOD AND DEVICE FOR IMAGE BLOCK SIGNAL COMPONENT SAMPLING POINT 审中-公开
标题翻译：帧内解码方法和装置，用于图像块信号分量应用点
公开(公告)号：EP2768222A4
公开(公告)日：2016-01-13
申请号：EP12846035
申请日：2012-11-05
申请人： HUAWEI TECH CO LTD
发明人： YANG HAITAO , ZHOU JIANTONG , AU OSCAR
IPC分类号： H04N19/186 , H04N19/11 , H04N19/157 , H04N19/176 , H04N19/70
CPC分类号： H04N19/593 , H04N19/00763 , H04N19/11 , H04N19/157 , H04N19/176 , H04N19/186 , H04N19/44 , H04N19/70
摘要： 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 according to the prediction mode information about 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 according to the prediction 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.
摘要翻译：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; 根据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; 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。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。

5. 发明公开

EP3291557A4 VIDEO IMAGE CODING AND DECODING METHOD, CODING DEVICE AND DECODING DEVICE 有权
公开(公告)号：EP3291557A4
公开(公告)日：2018-03-28
申请号：EP16795748
申请日：2016-03-30
申请人： HUAWEI TECH CO LTD
发明人： ZHANG HONG , YANG HAITAO
IPC分类号： H04N19/52 , H04N19/119 , H04N19/139 , H04N19/176 , H04N19/196 , H04N19/513 , H04N19/53 , H04N19/54
CPC分类号： H04N19/521 , H04N19/119 , H04N19/139 , H04N19/176 , H04N19/196 , H04N19/52 , H04N19/53 , H04N19/54 , H04N19/57 , H04N19/573 , H04N19/82
摘要： The present invention provides a video picture coding method, a video picture decoding method, a coding device, and a decoding device. The method includes: determining a motion vector difference of an affine picture block; determining motion vector precision of the affine picture block; determining a size of an affine motion compensation picture subblock in the affine picture block according to the motion vector difference, the motion vector precision, and a distance between control points in the affine picture block, where the control points are pixels used to determine the motion vector difference; and performing coding processing on the affine picture block according to the size of the affine motion compensation picture subblock. In this way, a picture subblock of an appropriate size is selected, so that coding complexity can be reduced, and coding efficiency can be improved.

6. 发明公开

EP3139607A4 TEMPLATE MATCHING-BASED INTRA-PREDICTION CODING AND DECODING AND ARRAY SCANNING METHOD AND DEVICE 有权
公开(公告)号：EP3139607A4
公开(公告)日：2017-10-25
申请号：EP15799249
申请日：2015-05-28
申请人： HUAWEI TECH CO LTD
发明人： HUANG XIN , YANG HAITAO
IPC分类号： H04N19/157 , H04N19/129 , H04N19/176 , H04N19/182 , H04N19/593
CPC分类号： H04N19/593 , H04N19/11 , H04N19/124 , H04N19/129 , H04N19/147 , H04N19/157 , H04N19/176 , H04N19/182

7. 发明公开

EP3163875A1 ADAPTIVE INVERSE-QUANTIZATION METHOD AND APPARATUS IN VIDEO CODING 有权
标题翻译： VERFAHREN UND VORRICHTUNG ZUR INVERSEN QUANTISIERUNG IN DER VIDEOCODIERUNG
公开(公告)号：EP3163875A1
公开(公告)日：2017-05-03
申请号：EP15824496
申请日：2015-01-16
申请人： HUAWEI TECH CO LTD
发明人： ZHAO YIN , YANG HAITAO , LV ZHUOYI
IPC分类号： H04N19/124
CPC分类号： H04N19/124 , H04N19/126 , H04N19/136 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/184 , H04N19/186 , H04N19/30 , H04N19/60
摘要： The present invention discloses an adaptive dequantization method and apparatus in video coding. According to the method provided in the present invention, a statistical feature of a background area in which a current transform block is located is estimated by using spatial neighborhood information, or temporal neighborhood information, or spatial neighborhood information and temporal neighborhood information of the transform block, a quantization adjustment factor for dequantization is adaptively derived, and dequantization processing is flexibly adjusted. In comparison with an existing solution in which quantization adjustment information is transmitted in a bitstream, according to the method and the apparatus that are provided in the present invention, extra bit overheads are not required to transmit the quantization adjustment information, thereby further improving coding efficiency.
摘要翻译：本发明公开了一种视频编码中的自适应反量化方法和装置。根据本发明提供的方法，通过使用空间邻域信息或时间邻域信息或变换块的空间邻域信息和时间邻域信息来估计当前变换块所处的背景区域的统计特征自适应地导出去量化的量化调整因子，并且去量化处理被灵活地调整。与在比特流中传输量化调节信息的现有解决方案相比，根据本发明提供的方法和装置，不需要额外的比特开销来传输量化调节信息，由此进一步提高了编码效率。

8. 发明公开

EP2672707A4 ENCODING METHOD AND DEVICE, AND DECODING METHOD AND DEVICE 审中-公开
标题翻译：编码方法和装置以及解码方法和装置
公开(公告)号：EP2672707A4
公开(公告)日：2014-03-05
申请号：EP11861079
申请日：2011-10-21
申请人： HUAWEI TECH CO LTD
发明人： YANG HAITAO , PANG CHAO , OU ZILIAN
IPC分类号： H04N19/115 , H04N19/124 , H04N19/96
CPC分类号： H04N19/124 , H04N19/115 , H04N19/149 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/96

9. 发明公开

EP3306936A4 VIDEO ENCODING AND DECODING METHOD AND DEVICE 有权
公开(公告)号：EP3306936A4
公开(公告)日：2018-06-13
申请号：EP16820797
申请日：2016-07-01
申请人： HUAWEI TECH CO LTD
发明人： WANG ZHAO , MA SIWEI , LV ZHUOYI , YANG HAITAO
IPC分类号： H04N19/56 , H04N19/11 , H04N19/122 , H04N19/13 , H04N19/136 , H04N19/139 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/523 , H04N19/533 , H04N19/537 , H04N19/57 , H04N19/593 , H04N19/63 , H04N19/91
CPC分类号： H04N19/56 , H04N19/109 , H04N19/136 , H04N19/139 , H04N19/14 , H04N19/182 , H04N19/523 , H04N19/533 , H04N19/57
摘要： Embodiments of the present invention disclose a video coding method, a video decoding method, a video coding apparatus, and a video decoding apparatus. The method in the embodiments of the present invention includes: obtaining a current picture, and obtaining motion vector precision of the current picture according to the current picture, where the motion vector precision includes a search step size set, and each search step size in the search step size set is less than a pixel unit; obtaining a current block and a reference picture of the current block; determining a search start point in the reference picture, and searching, from the search start point, for a target integer pixel by using a pixel unit as a search step size; searching, from the target integer pixel, for a match block of the current block according to the motion vector precision; obtaining motion vector information and a prediction residual signal; and writing information about the reference picture, the motion vector information, and the prediction residual signal into a bitstream, where the information about the reference picture is used to indicate the reference picture. In the embodiments of the present invention, coding and decoding can be performed with reference to video features.

10. 发明公开

EP3273693A4 VIDEO ENCODING AND DECODING METHOD, ENCODER AND DECODER 审中-公开
公开(公告)号：EP3273693A4
公开(公告)日：2018-03-14
申请号：EP16799132
申请日：2016-04-11
申请人： HUAWEI TECH CO LTD
发明人： ZHANG HONG , YANG HAITAO
IPC分类号： H04N19/51 , H04N19/139 , H04N19/176 , H04N19/513 , H04N19/573 , H04N19/58
CPC分类号： H04N19/513 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/44 , H04N19/51 , H04N19/573 , H04N19/58
摘要： Embodiments of the present invention relate to the field of video coding/decoding technologies. An embodiment of the present invention provides a video coding method, including: obtaining a first motion vector field set; obtaining multiple second motion vector fields according to the first motion vector field set and based on a preset vector operation method; determining a motion compensation prediction signal of the target sub picture block from the M MCP reference pictures according to the multiple second motion vector fields and based on a motion compensation prediction algorithm; obtaining a prediction residual of the target sub picture block according to a picture signal of the target sub picture block and the motion compensation prediction signal of the target sub picture block; and performing coding processing on the prediction residual of the target sub picture block to obtain a coded signal of the prediction residual of the target sub picture block, and sending the coded signal of the prediction residual of the target sub picture block to a peer decoder. This solution can be used to improve coding efficiency of a target sub picture block in most cases.

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