公开(公告)号：US20210281883A1

公开(公告)日：2021-09-09

申请号：US17316351

申请日：2021-05-10

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan Liu ,  Stephan Wenger

IPC: H04N19/82 ,  H04N19/70

Abstract: A method, computer program, and/or computer system is provided for coding a video sequence. Video data containing one or more faces may be received. One or more virtual boundaries between the one or more faces of the received video data may be selected. In-loop filtering may be disabled between the one or more selected virtual boundaries from among the virtual boundaries, based on the selected boundaries being discontinuous in a three-dimensional geometry.

公开(公告)号：US20210112253A1

公开(公告)日：2021-04-15

申请号：US17035051

申请日：2020-09-28

Applicant: TENCENT AMERICA LLC

Inventor： Xiaozhong XU ,  Byeongdoo CHOI ,  Shan LIU

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/172 ,  H04N19/174 ,  H04N19/44 ,  H04N19/70

Abstract: Aspects of the disclosure provide a method and an apparatus including processing circuitry for video decoding. The processing circuitry receives, from a coded video bitstream, coding information for a current picture. At least one flag in the coding information indicates one or more allowable coding types for sub-partitions in the current picture. The one or more allowable coding types include at least one of intra coding and inter coding for the sub-partitions. The processing circuitry determines, based on the at least one flag, whether to decode intra syntax elements used only for coding intra sub-partitions and whether to decode inter syntax elements used only for coding inter sub-partitions. The processing circuitry decodes the intra syntax elements in the coding information when the intra syntax elements are determined to be decoded and decodes the inter syntax elements in the coding information when the inter syntax elements are determined to be decoded.

公开(公告)号：US20210099725A1

公开(公告)日：2021-04-01

申请号：US17026967

申请日：2020-09-21

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/46 ,  H04N19/136 ,  H04N19/119 ,  H04N19/122

Abstract: A method of efficient signalizing of picture size and partitioning information in a video bitstream, is performed by at least one processor and includes obtaining, from a sequence parameter set (SPS) to which a coded picture refers, a flag indicating whether the picture size and partitioning information of the coded picture is included in the SPS, and determining whether the obtained flag indicates that the picture size and partitioning information is included in the SPS. The method further includes based on the flag being determined to indicate that the picture size and partitioning information is included in the SPS, obtaining, from the SPS, the picture size and partitioning information, and based on the flag being determined to indicate that the picture size and partitioning information is not included in the SPS, obtaining, from a video parameter set (VPS), the picture size and partitioning information that is included in the VPS.

公开(公告)号：US20210092453A1

公开(公告)日：2021-03-25

申请号：US17026966

申请日：2020-09-21

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/167

Abstract: A method, computer program, and computer system are provided for encoding and decoding video data. Video data including one or more subpictures is received. An identifier value corresponding to a subpicture from among the one or more subpictures is signaled. The video data is encoded and/or decoded based on the signaled identifier value.

公开(公告)号：US20210092448A1

公开(公告)日：2021-03-25

申请号：US17019713

申请日：2020-09-14

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan Wenger ,  Shan Liu

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/31

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform parsing at least one video parameter set comprising at least one syntax element indicating whether at least one layer in the scalable bitstream is one of a dependent layer of the scalable bitstream and an independent layer of the scalable bitstream, determining a number of dependent layers, including the dependent layer, of the scalable bitstream based on a plurality of flags included in the VPS, decoding a picture in the dependent layer by parsing and interpreting an inter-layer reference picture list, and decoding a picture in an independent layer without parsing and interpreting the inter-layer reference picture list.

公开(公告)号：US20210092401A1

公开(公告)日：2021-03-25

申请号：US17024246

申请日：2020-09-17

Applicant: TENCENT AMERICA LLC

Inventor： Yixin DU ,  Byeongdoo CHOI ,  Xiang LI ,  Xin ZHAO ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/146 ,  H04N19/186 ,  H04N19/122 ,  H04N19/46 ,  H04N19/169

Abstract: A method, computer program, and computer system is provided for coding video data. Video data having a coding tree unit size is received. The coding tree unit size associated with the video data is signaled by setting two or more flags. The video data is encoded/decoded based on the flags corresponding to the signaled coding tree unit size.

公开(公告)号：US20210092375A1

公开(公告)日：2021-03-25

申请号：US17026310

申请日：2020-09-21

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/169 ,  H04N19/46

Abstract: A versatile video coding (VVC) method includes obtaining a plurality of video sources; encoding the plurality of video sources into a bitstream including a plurality of independent layers corresponding to the plurality of video sources; generating signaling information on the plurality of independent layers and integrating the signaling information with the bitstream; and transferring the bitstream for decoding processing, wherein the signaling information is to be used in the decoding process to enable a single decoder instance to decode the plurality of independent layers similar to a single-layer bitstream. The signaling information includes at least a video parameter set (VPS), and the VPS includes a flag inbl_one_pic_per_poc_flag equal to 1, which specifies that the bitstream contains independent layers and there is one and only one coded picture with a particular picture order count (POC) value in a same coded video sequence (CVS) among all layers.

公开(公告)号：US20210067809A1

公开(公告)日：2021-03-04

申请号：US16999657

申请日：2020-08-21

Applicant: TENCENT AMERICA LLC

Inventor： Yixin DU ,  Xiang Li ,  Xin ZHAO ,  Shan LIU ,  Byeongdoo CHOI ,  Stephan WENGER

IPC: H04N19/96 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining a coding tree unit (CTU) from video data, partitioning the CTU by a quadtree structure, partitioning leaf nodes of the partitioned CTU by at least one of a binary tree structure and a ternary tree structure, and signaling a difference, in base 2 logarithm, between at least one value and a size of a sample resulting from at least one of partitioning the CTU by the quadtree structure and partitioning leaf nodes of the partitioned CTU by the at least one of the binary tree structure and the ternary tree structure.

公开(公告)号：US20200302654A1

公开(公告)日：2020-09-24

申请号：US16822198

申请日：2020-03-18

Applicant: TENCENT AMERICA LLC

Inventor： Shuai ZHAO ,  Iraj SODAGAR ,  Shan LIU ,  Byeongdoo CHOI ,  Sehoon YEA ,  Arash VOSOUGHI

IPC: G06T9/40 ,  H04N19/96 ,  G06T17/00 ,  H04N19/184

Abstract: A method of obtaining a tree-based point cloud compression (PCC) media stream using moving picture experts group (MPEG)-dynamic adaptive streaming over http (DASH), is performed by at least one processor and includes obtaining, from a server, a media representation description (MPD) comprising a PCC uniform resource indicator (URI) and a PCC three-dimensional (3D) descriptor, and determining whether the PCC URI comprised in the obtained MPD indicates that the tree-based PCC media stream is to be accessed. The method further includes, based on the PCC URI being determined to indicate that the tree-based PCC media stream is to be accessed, obtaining, from the server, the tree-based PCC media stream, using the PCC 3D descriptor comprised in the obtained MPD.

公开(公告)号：US20200296392A1

公开(公告)日：2020-09-17

申请号：US16815710

申请日：2020-03-11

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/169 ,  H04N19/174 ,  H04N19/15

Abstract: Methods and devices for decoding a video stream are provided, a method includes storing previously decoded pictures of the video stream in a picture buffer, including a first plurality of pictures of a same temporal sub-layer, the first plurality of pictures including at least one sub-layer reference picture for predicting a current picture of the video stream; determining whether a picture of the first plurality of pictures is a sublayer non-reference (“SLNR”) picture based on an indicator presented in at least one from among a slice header and a picture header; removing, based on the picture being determined as the SLNR picture, the SLNR picture from the picture buffer; and predicting the current picture using one or more of the at least one sub-layer reference picture that is stored within the picture buffer after removing the SLNR picture from the picture buffer.