公开(公告)号：WO2019112394A1

公开(公告)日：2019-06-13

申请号：PCT/KR2018/015573

申请日：2018-12-07

Applicant: 한국전자통신연구원 ,  성균관대학교산학협력단

Inventor： 전동산 ,  강정원 ,  고현석 ,  임성창 ,  이진호 ,  이하현 ,  전병우 ,  김휘용 ,  박지윤

IPC: H04N19/119 ,  H04N19/103 ,  H04N19/70 ,  H04N19/60 ,  H04N19/124 ,  H04N19/136 ,  H04N19/184 ,  H04N19/157 ,  H04N19/122

CPC classification number: H04N19/103 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/157 ,  H04N19/184 ,  H04N19/60 ,  H04N19/70

Abstract: 비디오의 복호화 방법, 복호화 장치, 부호화 방법 및 부호화 장치가 개시된다. 대상 블록의 대표 채널의 코딩 결정 정보는 대상 블록의 대상 채널의 코딩 결정 정보로서 공유되고, 대상 채널의 코딩 결정 정보를 사용하여 대상 블록의 복호화가 수행된다. 대표 채널의 코딩 결정 정보가 다른 채널과 공유됨에 따라서, 동일한 코딩 결정 정보가 반복해서 시그널링되는 것이 방지될 수 있다. 이러한 방지를 통해 대상 블록 등에 대한 부호화 및 복호화의 효율이 향상될 수 있다.

公开(公告)号：WO2019052568A1

公开(公告)日：2019-03-21

申请号：PCT/CN2018/106130

申请日：2018-09-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： LIU, Shan ,  FU, Jiali

IPC: H04N19/52

CPC classification number: H04W12/06 ,  G06K9/00013 ,  G06K9/00208 ,  G06K9/00255 ,  G06K9/00744 ,  G06K9/00899 ,  G06K9/00912 ,  G06K9/2036 ,  G06K9/4642 ,  H04L63/0861 ,  H04N19/117 ,  H04N19/184 ,  H04N19/46 ,  H04N19/52 ,  H04N19/523 ,  H04N19/573 ,  H04N19/70 ,  H04N19/91

Abstract: A mechanism of video coding is provided. The mechanism includes determining a motion vector predictor (MVP), a horizontal motion vector difference component (MVDx), and a vertical motion vector difference component (MVDy) associated with a motion vector (MV). A horizontal MV resolution (MVR) and a vertical MVR are also determined for the MV. A horizontal component of the MVP is rounded to a precision specified by the horizontal MVR and a vertical component of the MVP is rounded to a precision specified by the vertical MVR. The MV is determined based on the MVP, the MVDx, and the MVDy. The MV is then employed to position a current block in a current frame relative to a reference block in a reference frame. A video stream including the current frame is generated for display on a screen.

公开(公告)号：WO2019028069A1

公开(公告)日：2019-02-07

申请号：PCT/US2018/044685

申请日：2018-07-31

Applicant: DISH TECHNOLOGIES L.L.C.

Inventor： DAY, Christopher ,  SHAH, Rima

IPC: H04N19/196 ,  H04N19/132 ,  H04N19/136 ,  H04N19/184 ,  H04N19/40 ,  G06K9/00 ,  G06F17/30

CPC classification number: H04N19/136 ,  G06F16/783 ,  G06K9/00724 ,  G06K9/4604 ,  G06K9/66 ,  H04N19/103 ,  H04N19/132 ,  H04N19/14 ,  H04N19/177 ,  H04N19/184 ,  H04N19/196 ,  H04N19/40

Abstract: Systems and methods for enhanced video encoding identify patterns in sequences of raw digital video frames to extract features and identify the type of content represented by the extracted features. The system simulates many outcomes of encoding the sequence of digital video frames by using various different encoding strategies to find the relative best encoding strategy for each sequence of frames. As the encoder processes video, it passes digital video frames to a modeling system which determines whether the video, or video having that same type of content, has been previously observed by the system. The system then selectively applies a saved encoding strategy that had been determined by the system to be particularly suitable for encoding the same sequence of video frames or that same type of content.

公开(公告)号：WO2018174992A1

公开(公告)日：2018-09-27

申请号：PCT/US2018/015266

申请日：2018-01-25

Applicant: QUALCOMM INCORPORATED

Inventor： MATSUBA, Yasutomo ,  LALGUDI, Hariharan Ganesh ,  CHEN, Yunqing ,  ANDRIJANIC, Vladan ,  CHIKKERUR, Shyamprasad ,  REDDY, Harikrishna ,  WANG, Kai

IPC: H04N19/174 ,  H04N19/423

CPC classification number: H04N19/513 ,  H04N19/124 ,  H04N19/15 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/423 ,  H04N19/436 ,  H04N19/91

Abstract: Example video encoding techniques are described. A video encoder may generate residual data for macroblocks for tiles of a current frame. Each tile includes a plurality of macroblocks, each tile is independently encoded from the other tiles of the current frame, and a width of each tile is less than a width of the current frame. The video encoder may store the residual data in buffers. Each buffer is associated with one or more tiles, and each buffer is configured to store residual data for macroblocks for the one or more tiles with which each buffer is associated. The video encoder may read the residual data from the plurality of buffers for macroblocks of an entire row of the current frame before reading residual data from the plurality of buffers for macroblocks of any other row of the current frame, and encode values based on the read residual data.

公开(公告)号：WO2018057339A1

公开(公告)日：2018-03-29

申请号：PCT/US2017/051107

申请日：2017-09-12

Applicant: APPLE INC.

Inventor： GUO, Mei ,  KIM, Jae Hoon ,  XIN, Jun ,  YI, Feng ,  SU, Yeping ,  ZHANG, Dazhong ,  CHUNG, Chris ,  ZHOU, Xiaosong ,  WU, Hsi-Jung

IPC: H04N19/176 ,  H04N19/134 ,  H04N19/117 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/15 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

Abstract: Techniques are disclosed for selecting deblocking filter parameters in a video decoding system. According to these techniques, a boundary strength parameter may be determined based, at least in part, on a bit depth of decoded video data. Activity of a pair of decoded pixel blocks may be classified based, at least in part, on the determined boundary strength parameter, and when a level of activity indicates that deblocking filtering is to be applied to the pair of pixel blocks, pixel block content at a boundary between the pair of pixel blocks may be filtered using filtering parameters derived at least in part based on the bit depth of the decoded video data. The filtering parameters may decrease strength with increasing bit depth of the decoded video data, which improves quality of the decoded video data.

Abstract translation: 公开了用于在视频解码系统中选择解块滤波器参数的技术。 根据这些技术，可以至少部分地基于解码的视频数据的比特深度来确定边界强度参数。 可以至少部分地基于所确定的边界强度参数来对一对解码的像素块的活动进行分类，并且当活动水平指示要对该对像素块应用去块滤波时，像素块内容在 可以使用至少部分地基于解码的视频数据的位深度导出的滤波参数对该对像素块之间的边界进行滤波。 滤波参数可能随着解码视频数据的比特深度的增加而降低强度，这提高了解码视频数据的质量。

公开(公告)号：WO2017214515A1

公开(公告)日：2017-12-14

申请号：PCT/US2017/036772

申请日：2017-06-09

Applicant: QUALCOMM INCORPORATED

Inventor： THIRUMALAI, Vijayaraghavan ,  JACOBSON, Natan Haim ,  JOSHI, Rajan Laxman

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/146 ,  H04N19/184 ,  H04N19/423

CPC classification number: H04N19/157 ,  H04L65/607 ,  H04L65/80 ,  H04N19/11 ,  H04N19/127 ,  H04N19/146 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/188 ,  H04N19/423 ,  H04N19/593

Abstract: An apparatus configured to encode video data comprising a memory configured to store a block of video data and one or more processors in communication with the memory. The one or more processors are configured to determine a coding mode for encoding the block of video data from among one or more coding modes, wherein the coding mode is determined based on a maximum syntax element size, encode the block of video data in a plurality of substreams according to the determined coding mode to create a plurality of encoded substreams of video data, store the plurality of encoded substreams of video data in respective balance first-in, first-out (FIFO) buffers, and multiplex the plurality of encoded substreams in a bitstream for transmitting to a video decoder.

Abstract translation: 被配置为对视频数据进行编码的设备，所述设备包括被配置为存储视频数据块的存储器以及与所述存储器通信的一个或多个处理器。 所述一个或一个以上处理器经配置以确定用于从一个或一个以上译码模式中编码所述视频数据块的译码模式，其中所述译码模式是基于最大语法元素尺寸确定的，将所述视频数据块编码为多个 根据所确定的编码模式产生多个子流，以创建视频数据的多个编码子流，将视频数据的多个编码子流存储在各自的平衡先进先出（FIFO）缓冲器中，并且将多个编码子流 在传输到视频解码器的比特流中。

公开(公告)号：WO2017201678A1

公开(公告)日：2017-11-30

申请号：PCT/CN2016/083203

申请日：2016-05-24

Applicant: 华为技术有限公司 ,  中国科学技术大学

Inventor： 陈焕浜 ,  杨海涛 ,  李厚强

IPC: H04N19/51

CPC classification number: H04N19/139 ,  H04N19/184 ,  H04N19/513 ,  H04N19/52 ,  H04N19/54

Abstract: 一种图像预测方法和相关设备所述方法包括：解析第一码流信息，用于指示运动信息单元，获取每个所述第一像素样本的运动信息和每个所述第二像素样本的预测运动信息；解析第二码流信息，用于表征每个所述第二像素样本的差异运动信息，获取每个所述第二像素样本的运动信息；根据所述当前图像块的运动模型、所述第一像素样本和第二像素样本的运动信息，获得所述当前图像块的预测值。

公开(公告)号：WO2017157281A1

公开(公告)日：2017-09-21

申请号：PCT/CN2017/076622

申请日：2017-03-14

Applicant: MEDIATEK INC.

Inventor： CHUANG, Tzu-Der ,  CHEN, Ching-Yeh ,  HUANG, Yu-Wen

IPC: H04N19/52 ,  H04N19/56 ,  H04N19/176 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/56 ,  H04N19/577

Abstract: Method and apparatus of video coding using decoder derived motion information based on bilateral matching or template matching are disclosed. According to one method, merge index for merge candidate group comprising bilateral matching merge candidate and/or template matching merge candidate are signalled using different codewords. According to another method, the first-stage MV or the first-stage MV pair is used as an only initial MV or MV pair or used as a central MV of search window for second-stage search. According to yet another method, after the reference template for a first reference list is found, the current template is modified for template search in the other reference list. According to yet another method, the sub-PU search is disabled for the template search. According to yet another method, block difference calculation is based on reduced bit depth during MV search associated with the decoder-side MV derivation process.

Abstract translation: 公开了使用基于双边匹配或模板匹配的解码器导出的运动信息的视频编码方法和装置。 根据一种方法，使用不同码字来发信号通知包括双边匹配合并候选者和/或模板匹配合并候选者的用于合并候选者组的合并索引。 根据另一种方法，第一级MV或第一级MV对用作唯一的初始MV或MV对或用作第二级搜索的搜索窗的中央MV。 根据另一种方法，在找到第一参考列表的参考模板之后，修改当前模板以用于其他参考列表中的模板搜索。 根据另一种方法，针对模板搜索禁用子PU搜索。 根据另一种方法，块差异计算基于与解码器侧MV导出过程相关联的MV搜索期间缩小的比特深度。

公开(公告)号：WO2016200984A8

公开(公告)日：2017-06-22

申请号：PCT/US2016036497

申请日：2016-06-08

Applicant: VID SCALE INC

Inventor： XIU XIAOYU ,  YE YAN ,  HE YUWEN

IPC: H04N19/593

CPC classification number: H04N19/176 ,  H04N19/126 ,  H04N19/184 ,  H04N19/186 ,  H04N19/593

Abstract: A video block of a current picture may be coded in an intra block copy (IBC) mode. Weighted prediction may be disabled for the IBC-coded screen content video block. Fractional block vectors may be used for the chroma components of the IBC-coded video block. An interpolation filter may be utilized to generate chroma prediction samples for the video block. A decoded version of the current reference picture may be added to both reference picture list L0 and reference picture list L1 that are associated with the IBC-coded video block. When constrained intra prediction is applied, reference samples that may be used to predict an intra- coded video block may be limited to those in intra-coded neighboring blocks. The range of IBC searches may be restricted by imposing a maximum absolute value for block vectors.

Abstract translation: 当前图片的视频块可以以帧内块复制（IBC）模式进行编码。 对于IBC编码的屏幕内容视频块，加权预测可能被禁用。 分数块矢量可以用于IBC编码的视频块的色度分量。 可以使用内插滤波器来生成视频块的色度预测采样。 当前参考图片的解码版本可以被添加到与IBC编码视频块相关联的参考图片列表L0和参考图片列表L1。 当应用约束帧内预测时，可用于预测帧内编码视频块的参考样本可限于帧内编码相邻块中的那些参考样本。 IBC搜索的范围可以通过对块矢量施加最大绝对值来限制。

公开(公告)号：WO2017095506A1

公开(公告)日：2017-06-08

申请号：PCT/US2016/052709

申请日：2016-09-20

Applicant: INTEL CORPORATION

Inventor： GOKHALE, Neelesh N. ,  PURI, Atul

IPC: H04N19/107 ,  H04N19/30 ,  H04N19/146 ,  H04N19/70 ,  H04N19/44 ,  H04N19/463

CPC classification number: H04N19/63 ,  H04N19/119 ,  H04N19/159 ,  H04N19/184 ,  H04N19/187 ,  H04N19/1883

Abstract: Techniques related to intra video frame or image coding using wavelets and High Efficiency Video Coding (HEVC) are discussed. Such techniques may include wavelet decomposition of a frame or image to generate subbands and coding the subbands using compliant and/or modified HEVC coding techniques.

Abstract translation: 讨论了与使用小波的帧内视频帧或图像编码和高效视频编码（HEVC）有关的技术。 这些技术可以包括帧或图像的小波分解以生成子带，并使用兼容和/或修改的HEVC编码技术对子带编码。