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1. 发明公开

EP3070951A4 VIDEO CODE STREAM OBTAINING METHOD AND APPARATUS 审中-公开
标题翻译：方法和设备获得视频码流
公开(公告)号：EP3070951A4
公开(公告)日：2016-09-21
申请号：EP14870025
申请日：2014-11-28
申请人： HUAWEI TECH CO LTD
发明人： LV ZHUOYI , ZHOU JIANTONG , FU JIALI , YANG HAITAO
IPC分类号： H04N21/258 , H04N21/2343 , H04N21/262 , H04N21/442 , H04N21/462 , H04N21/845
CPC分类号： H04L47/25 , H04L65/601 , H04N21/23439 , H04N21/25808 , H04N21/26258 , H04N21/44209 , H04N21/4621 , H04N21/8456
摘要： Embodiments of the present invention disclose a method and an apparatus for acquiring a video bitstream, and relate to the field of information technologies, which can improve network bandwidth utilization. The method includes: firstly, acquiring, by a terminal, a minimum bit rate corresponding to a parameter of the terminal; then, sending, by the terminal, a video bitstream acquiring request to a server, and when receiving the video bitstream acquiring request sent by the terminal, sending, by the server, an MPD to the terminal; and finally, receiving, by the terminal, the MPD sent by the server, and acquiring a video bitstream according to the MPD and the minimum bit rate. The embodiments of the present invention are applicable to a case in which a user downloads video data by using a terminal.

2. 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。

3. 发明公开

EP3163875A4 ADAPTIVE INVERSE-QUANTIZATION METHOD AND APPARATUS IN VIDEO CODING 有权
公开(公告)号：EP3163875A4
公开(公告)日：2017-09-27
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： H04N19/126 , H04N19/136 , H04N19/176 , H04N19/18 , H04N19/60
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.

4. 发明公开

EP3197165A4 IMAGE PREDICTION METHOD AND RELEVANT DEVICE 有权
标题翻译： BILDVORHERSAGEVERFAHREN UND RELEVANTE VORRICHTUNG
公开(公告)号：EP3197165A4
公开(公告)日：2017-08-02
申请号：EP15846328
申请日：2015-04-15
申请人： HUAWEI TECH CO LTD , UNIV SCIENCE & TECH CHINA
发明人： LI LI , LI HOUQIANG , LV ZHUOYI , LIN SIXIN
IPC分类号： H04N19/513 , H04N19/176 , H04N19/182 , H04N19/51 , H04N19/54
CPC分类号： H04N19/513 , H04N19/176 , H04N19/182 , H04N19/51 , H04N19/54 , H04N19/593
摘要： Embodiments of the present invention disclose a picture prediction method and a related apparatus. The picture prediction method includes: determining motion vector predictors of K pixel samples in a current picture block, where K is an integer greater than 1, the K pixel samples include a first vertex angle pixel sample in the current picture block, a motion vector predictor of the first vertex angle pixel sample is obtained based on a motion vector of a preset first spatially adjacent picture block of the current picture block, and the first spatially adjacent picture block is spatially adjacent to the first vertex angle pixel sample; and performing, based on a non-translational motion model and the motion vector predictors of the K pixel samples, pixel value prediction on the current picture block. Solutions in the embodiments of the present invention are helpful in reducing calculation complexity of picture prediction based on a non-translational motion model.
摘要翻译：本发明的实施例公开了一种图片预测方法和相关装置。该图片预测方法包括：确定当前图片块中K个像素样本的运动矢量预测因子，其中K为大于1的整数，K个像素样本包括当前图片块中的第一顶角像素样本，运动矢量预测因子根据所述当前图片块的预设第一空间相邻图片块的运动矢量，得到所述第一顶角像素采样的空间相邻图像块，所述第一空间相邻图像块在空间上与所述第一顶角像素采样相邻; 基于所述K个像素样本的非平移运动模型和运动矢量预测因子对所述当前图像块进行像素值预测。本发明实施例中的解决方案有助于减少基于非平移运动模型的图片预测的计算复杂度。

5. 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.

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