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    LOCAL ILLUMINATION COMPENSATION USING GENERALIZED BI-PREDICTION
    141.
    发明申请
    LOCAL ILLUMINATION COMPENSATION USING GENERALIZED BI-PREDICTION 审中-公开

    公开(公告)号：WO2019006363A1

    公开(公告)日：2019-01-03

    申请号：PCT/US2018/040393

    申请日：2018-06-29

    Applicant: VID SCALE, INC.

    Inventor： ZHANG, Yan ,  XIU, Xiaoyu ,  HE, Yuwen ,  YE, Yan

    IPC: H04N19/577

    CPC classification number: H04N19/577

    Abstract: Based on the prediction mode used for the current block, a decoder may determine whether to parse an illumination compensation indication for the current block. The illumination compensation indication may indicate whether to enable an illumination compensation process for the current block. If the prediction mode is indicative of the continuous motion changes between the current block and one or more of the reference blocks, the decoder may bypass parsing the illumination compensation indication. The decoder may disable the illumination compensation process on the current block based on the determination to bypass parsing the illumination compensation indication for the current block.

    MOTION COMPENSATION IN VIDEO ENCODING AND DECODING
    142.
    发明申请
    MOTION COMPENSATION IN VIDEO ENCODING AND DECODING 审中-公开

    公开(公告)号：WO2018172609A2

    公开(公告)日：2018-09-27

    申请号：PCT/FI2018/050193

    申请日：2018-03-16

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： LAINEMA, Jani

    CPC classification number: H04N19/52 ,  H04N19/557 ,  H04N19/56 ,  H04N19/57 ,  H04N19/577

    Abstract: There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments for encoding.In some embodiments for decoding or encoding a block of a current picture a first motion vector predictor candidate pointing to a first reference block in a first reference picture and a second motion vector predictor candidate pointing to a second reference block in a second reference picture are obtained. A difference vector is added to the first motion vector predictor candidate to obtain a modified first motion vector predictor candidate and subtracted from the second motion vector predictor candidate to obtain a modified second motion vector predictor candidate. A cost estimate is determined for bi-directional motion prediction on the basis of the modified first motion vector predictor candidate and the modified second motion vector predictor candidate. The addition, subtraction and cost estimate determination may be repeated to obtain a set of modified first motion vector predictor candidates, a set of modified second motion vector predictor candidates and a set of cost estimates. A first motion vector predictor is selected from the set of modified first motion vector predictor candidates and a second motion vector predictor is selected from the set of modified second motion vector predictor candidates on the basis of the set of cost estimates.

    INTRA-CODED VIDEO FRAME CACHING FOR VIDEO TELEPHONY SESSIONS
    143.
    发明申请
    INTRA-CODED VIDEO FRAME CACHING FOR VIDEO TELEPHONY SESSIONS 审中-公开
    为视频电话会议编码的视频帧缓存

    公开(公告)号：WO2018044385A1

    公开(公告)日：2018-03-08

    申请号：PCT/US2017/039578

    申请日：2017-06-27

    Applicant: QUALCOMM INCORPORATED

    Inventor： NAMJOSHI, Aditya ,  BHANDIWAD, Harish ,  WONG, Clayton ,  GAUR, Neeraj

    IPC: H04L29/06 ,  H04L29/08

    CPC classification number: H04N19/577 ,  H04L65/1059 ,  H04L65/604 ,  H04L65/80 ,  H04L67/2842 ,  H04N7/147 ,  H04N19/105 ,  H04N19/44 ,  H04W88/02

    Abstract: Video telephony (VT) call management techniques are described. The techniques enable a device to cache intra-frame data at a pre-decoder-initialization stage. An example device includes a memory configured to store video data associated with a VT call, a video decoder configured to render a portion of the stored video data; and one or more processors. The processor(s) are configured to determine whether the received video frame data comprises i-frame data, to determine whether the video decoder is in a pre-initialized state or an initialized state, and when the received video frame data comprises the i-frame data and the video decoder is in the pre-initialized state, to store the i-frame data to the memory.

    Abstract translation: 描述了视频电话（VT）呼叫管理技术。 这些技术使设备能够在预解码器初始化阶段缓存帧内数据。 示例设备包括：存储器，被配置为存储与VT呼叫相关联的视频数据;视频解码器，被配置为呈现所存储的视频数据的一部分; 和一个或多个处理器。 （多个）处理器被配置为确定接收的视频帧数据是否包括i帧数据，以确定视频解码器是处于预初始化状态还是初始化状态，并且当接收到的视频帧数据包括i- 帧数据并且视频解码器处于预初始化状态，以将i帧数据存储到存储器。

    MOTION VECTOR RECONSTRUCTION ORDER SWAP
    144.
    发明申请
    MOTION VECTOR RECONSTRUCTION ORDER SWAP 审中-公开
    运动矢量重建命令交换

    公开(公告)号：WO2017160209A1

    公开(公告)日：2017-09-21

    申请号：PCT/SE2017/050235

    申请日：2017-03-10

    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

    Inventor： WENNERSTEN, Per ,  PETTERSSON, Martin ,  YU, Ruoyang

    IPC: H04N19/52 ,  H04N19/577

    CPC classification number: H04N19/513 ,  H04N19/159 ,  H04N19/184 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70

    Abstract: Motion vectors used for bi-prediction of a block of a current picture are predicted and reconstructed by determining candidate motion vector predictors for each of two motion vector predictor lists. A reconstruction order for the motion vector predictor lists is selected based on the candidate motion vector predictors. In video coding, motion vector deltas are generated for the motion vector predictor lists according to the selected reconstruction order and in video decoding, reconstructed motion vectors are generated for the motion vector predictor lists according to the selected reconstruction order. A candidate motion vector predictor of the second motion vector predictor list is replaced by the actual or reconstructed motion vector for the first motion vector predictor list or a scaled version thereof. This selection of reconstruction order enables determining better candidate motion vector predictors and thereby resulting in smaller motion vector deltas.

    Abstract translation: 通过为两个运动矢量预测值列表中的每一个确定候选运动矢量预测值来预测和重建用于当前图片的块的双预测的运动矢量。 基于候选运动向量预测符来选择运动向量预测符列表的重构次序。 在视频编码中，根据所选重构次序为运动矢量预测子列表生成运动矢量增量，并且在视频解码中，根据所选重构次序为运动矢量预测子列表生成重建运动矢量。 第二运动矢量预测值列表的候选运动矢量预测值被第一运动矢量预测值列表或其缩放版本的实际或重建运动矢量代替。 重建顺序的这种选择使得能够确定更好的候选运动矢量预测因子并且由此导致更小的运动矢量增量。

    CODING DATA USING AN ENHANCED CONTEXT-ADAPTIVE BINARY ARITHMETIC CODING (CABAC) DESIGN
    147.
    发明申请
    CODING DATA USING AN ENHANCED CONTEXT-ADAPTIVE BINARY ARITHMETIC CODING (CABAC) DESIGN 审中-公开
    使用增强的自适应二进制算术编码（CABAC）设计编码数据

    公开(公告)号：WO2016196369A1

    公开(公告)日：2016-12-08

    申请号：PCT/US2016/034828

    申请日：2016-05-27

    Applicant: QUALCOMM INCORPORATED

    Inventor： ZHANG, Li ,  KARCZEWICZ, Marta ,  CHEN, Jianle ,  CHIEN, Wei-Jung

    IPC: H04N19/91 ,  H04N19/436

    CPC classification number: H04N19/13 ,  H04N19/122 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/436 ,  H04N19/577 ,  H04N19/625 ,  H04N19/91

    Abstract: A video coding device includes processor(s) configured to determine, for each of a plurality of bins of a value for a syntax element of a current transform coefficient, contexts using respective corresponding bins of values for the syntax element of previously coded transform coefficients. The processor(s) are configured to determine a context for an i th bin of the value for the syntax element of the current transform coefficient using a corresponding i th bin of a value for the syntax element of a previously coded transform coefficient. To use the corresponding i th bin of the value for the syntax element of the previously coded transform coefficient, the processor(s) are configured to use only the i th bin, and no other bins, of the value for the syntax element of the previously coded transform coefficient. 'i' represents a non-negative integer.

    Abstract translation: 视频编码装置包括处理器，其被配置为使用对于先前编码的变换系数的语法元素的各个对应的值来确定针对当前变换系数的语法元素的值的多个块中的每一个的上下文。 处理器被配置为使用对于先前编码的变换系数的语法元素的值的对应的第i个bin来确定当前变换系数的语法元素的值的第i个bin的上下文。 为了使用对于先前编码的变换系数的语法元素的值的对应的第i个bin，处理器被配置为仅使用先前编码的转换系数的语法元素的值的第i个bin，而不使用其他bin 变换系数。 'i'表示非负整数。

    一种基于光流法的视频插帧方法及系统
    149.
    发明申请
    一种基于光流法的视频插帧方法及系统 审中-公开

    公开(公告)号：WO2016187776A1

    公开(公告)日：2016-12-01

    申请号：PCT/CN2015/079697

    申请日：2015-05-25

    Applicant: 北京大学深圳研究生院

    Inventor： 汤传新 ,  王荣刚 ,  王振宇 ,  高文

    IPC: G06K9/36

    CPC classification number: H04N19/139 ,  G06K9/36 ,  H04N19/117 ,  H04N19/33 ,  H04N19/513 ,  H04N19/543 ,  H04N19/577

    Abstract: 一种基于光流法的视频插帧方法及系统，其过程为：对输入的视频的帧序列，采用光流法计算得到相邻两帧之间的双向运动矢量；判断相邻两帧之间的双向运动矢量是否可靠，对光流法的锯齿问题和噪声问题进行处理；对相邻两帧中的"遮挡"和"暴露"区域进行标记，对不可靠的运动矢量进行更新处理；对于相邻两帧，根据"遮挡"和"暴露"区域的标记信息以及更新处理后所得的双向运动矢量场，将前后帧向内插帧映射得到前向内插帧和后向内插帧；将前向内插帧和后向内插帧合成成内插帧；对内插帧中的洞点进行修补；得到最终的内插帧。本发明的帧率上转换采用光流法计算得到相邻两帧之间的双向运动矢量，其基于的是像素，因此更加精确，不存在块效应等问题。

    VIDEO STREAMING CONCEPT
    150.
    发明申请
    VIDEO STREAMING CONCEPT 审中-公开
    视频流行概念

    公开(公告)号：WO2016180741A2

    公开(公告)日：2016-11-17

    申请号：PCT/EP2016/060243

    申请日：2016-05-06

    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

    Inventor： SKUPIN, Robert ,  SANCHEZ, Yago ,  SCHIERL, Thomas

    IPC: H04N21/2343 ,  H04N7/15 ,  H04N19/30 ,  H04N19/597

    CPC classification number: H04N19/187 ,  H04N5/23238 ,  H04N5/265 ,  H04N7/15 ,  H04N7/152 ,  H04N19/105 ,  H04N19/139 ,  H04N19/152 ,  H04N19/196 ,  H04N19/30 ,  H04N19/503 ,  H04N19/51 ,  H04N19/577 ,  H04N19/597 ,  H04N21/23424 ,  H04N21/234327 ,  H04N21/23605 ,  H04N21/2365

    Abstract: Video streaming concepts are presented. According to a first aspect, the video stream is formed as a multi-layered data stream with forming a set of one or more layers of the multi-layered data stream by copying from the coded version of the video content, while a composition of the at least one video is synthesized in at least a portion of pictures of a predetermined layer of the multi-layer data stream by means of inter-layer prediction. According to a second aspect, inter-layer prediction is used to either substitute otherwise missing referenced pictures of a newly encompassed video by inserting replacement pictures, or portions of the newly encompassed video referencing, by motion-compensated prediction, pictures which are missing are replaced by inter-layer prediction. According to a third aspect, output pictures inserted into the composed video stream so as to synthesize the composition of the video content by copying from a no-output portion of the composed data stream by temporal prediction, are inserted into the composed data stream so that output pictures are arranged in the data stream in the presentation time order rather than the coded picture order.

    Abstract translation: 提供视频流概念。 根据第一方面，视频流形成为多层数据流，通过从视频内容的编码版本复制而形成多层数据流的一个或多个层的集合，同时， 通过层间预测，在多层数据流的预定层的图像的至少一部分中合成至少一个视频。 根据第二方面，层间预测用于通过插入替换图像或通过运动补偿预测的新近包含的视频参考的部分来代替新近包含的视频的其它缺失的参考图片，替换丢失的图片 通过层间预测。 根据第三方面，插入到合成视频流中的输出图像被插入到组合数据流中，以便通过从时间预测的组合数据流的非输出部分复制来合成视频内容的组合，使得 输出图像以呈现时间顺序而不是编码图像顺序排列在数据流中。

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