公开(公告)号：US20210203967A1

公开(公告)日：2021-07-01

申请号：US17038541

申请日：2020-09-30

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephan WENGER

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/169 ,  H04N19/174

Abstract: A method of decoding an encoded video bitstream using at least one processor, including: obtaining from the encoded video bitstream a coded video sequence including a picture unit corresponding to a coded picture; obtaining a picture header (PH) network abstraction layer (NAL) unit included in the picture unit; obtaining at least one video coding layer (VCL) network abstraction layer (NAL) unit included in the picture unit; decoding the coded picture based on the PH NAL unit, the at least one VCL NAL unit, and an adaptation parameter set (APS) included in an APS NAL unit obtained from the coded video sequence; and outputting the decoded picture, wherein the APS NAL unit is available to the at least one processor before the at least one VCL NAL unit.

公开(公告)号：US20210092446A1

公开(公告)日：2021-03-25

申请号：US17019959

申请日：2020-09-14

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/65 ,  H04N19/30 ,  H04N19/159 ,  H04N19/176

Abstract: A method of decoding an encoded video bitstream using at least one processor includes obtaining a coded video sequence from the encoded video bitstream; obtaining a first syntax element indicating a number of a plurality of layers included in the coded video sequence; obtaining a second syntax element indicating whether the plurality of layers included in the coded video sequence are all independent layers; based on the first syntax element indicating that the number of the plurality of layers is greater than one, and the second syntax element indicating that the plurality of layers are not all the independent layers, obtaining a third syntax element indicating an output mode; determining the output mode based on the third syntax element; determining one or more output layers from among the plurality of layers based on the determined output mode; and outputting the one or more output layers.

公开(公告)号：US20200344489A1

公开(公告)日：2020-10-29

申请号：US16396114

申请日：2019-04-26

Applicant: TENCENT AMERICA LLC

Inventor： Stephan WENGER ,  Shan LIU

IPC: H04N19/513 ,  H04N19/573 ,  H04N19/105 ,  H04N19/85 ,  H04N19/172

Abstract: A method of decoding a coded video sequence in a decoder, into a series of reconstructed pictures, is provided, the reconstructed pictures representing a projection on a planar surface of a non-planar surface. The method includes generating an ordered candidate list including a plurality of candidate motion vectors for a current prediction unit (PU) under reconstruction, by ordering the plurality of candidate motion vectors in the ordered candidate list based on a geometric property of the projection including the current PU and based on a position of the current PU in the projection, decoding an index, referencing the generated ordered candidate list using the decoded index to select one of the plurality of candidate motion vectors from the generated ordered candidate list, generating a prediction signal, using the selected one of the plurality of candidate motion vectors, and reconstructing the current PU, using the generated prediction signal.

公开(公告)号：US20200288174A1

公开(公告)日：2020-09-10

申请号：US16459883

申请日：2019-07-02

Applicant: TENCENT AMERICA LLC

Inventor： Stephan WENGER ,  Byeongdoo CHOI ,  Shan LIU

IPC: H04N19/70 ,  H04N19/169

Abstract: An approach for reconstructing a Network Abstraction Layer (NAL) unit for video decoding using at least one processor includes decoding a first syntax element included in a NAL unit header; determining, based on the first syntax element, a NAL unit class including a plurality of NAL unit types; decoding a second syntax element included in the NAL unit header; and based on the NAL unit class being a first NAL unit class, determining a NAL unit type from among the NAL unit types using a combination of the NAL unit class and the second syntax element. and reconstructing the NAL unit based on the determined NAL unit type; and based on the NAL unit class being a second NAL unit class, determining a temporal identifier (TID) based on the second syntax element, and reconstructing the NAL unit based on the determined TID.

公开(公告)号：US20200053371A1

公开(公告)日：2020-02-13

申请号：US16660598

申请日：2019-10-22

Applicant: Tencent America LLC

Inventor： Xiaozhong XU ,  Shan LIU ,  Meng XU ,  Xiang LI ,  Stephan WENGER

IPC: H04N19/423 ,  H04N19/513 ,  H04N19/132 ,  H04N19/44 ,  H04N19/172 ,  H04N19/139

Abstract: Aspects of the disclosure provide method and apparatus for video coding. In some examples, an apparatus includes processing circuitry. The processing circuitry decodes a first portion of video data to obtain first data of a first reconstructed picture, the first data including a first data set that corresponds to a first information category and a second data set that corresponds to a second information category. The processing circuitry determines whether to store at least one of the first data set and the second data set as reference data, and stores the at least one of the first data set and the second data set of the first reconstructed picture as the reference data based on the determination. The processing circuitry also decodes a second portion of the video data to obtain second data of a second reconstructed picture based on the stored reference data.

公开(公告)号：US20250039389A1

公开(公告)日：2025-01-30

申请号：US18913261

申请日：2024-10-11

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/139 ,  H04N19/196

Abstract: A method, device, and non-transitory computer-readable medium for decoding an encoded video bitstream using at least one processor, including obtaining a coded picture from the encoded video bitstream; decoding the coded picture to generate a decoded picture; obtaining a first flag indicating whether reference picture resampling is enabled; obtaining a second flag indicating whether reference pictures have a constant reference picture size; obtaining a third flag indicating whether output pictures have a constant output picture size indicated in the encoded video bitstream; generating a reference picture by resampling the decoded picture to have the constant reference picture size, and storing the reference picture in a decoded picture buffer; and generating an output picture by resampling the decoded picture to have the constant output picture size, and outputting the output picture.

公开(公告)号：US20240259579A1

公开(公告)日：2024-08-01

申请号：US18629567

申请日：2024-04-08

Applicant: Tencent America LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/44 ,  H04N19/187 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/187 ,  H04N19/46 ,  H04N19/70

Abstract: A method of decoding an encoded video bitstream using at least one processor includes obtaining a coded video sequence including a plurality of output layer sets from the encoded video bitstream; obtaining a first flag indicating whether each output layer set of the plurality of output layer sets includes more than one layer; based on the first flag indicating that the each output layer set includes more than the one layer, obtaining a first syntax element indicating an output layer set mode; selecting at least one layer from among layers included in the plurality of output layer sets as at least one output layer based on at least one of the first flag and the first syntax element; and outputting the at least one output layer.

公开(公告)号：US20240244264A1

公开(公告)日：2024-07-18

申请号：US18421548

申请日：2024-01-24

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Stephan WENGER ,  Shan LIU

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/186 ,  H04N19/46 ,  H04N19/513 ,  H04N19/80

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/186 ,  H04N19/46 ,  H04N19/513 ,  H04N19/80

Abstract: A method, computer program, and computer system is provided for video coding. The method may include decoding coded syntax elements corresponding to a wrap-around padding process based on shifting a reference block by a width value that is determined based on luma samples in the reference block; and reconstructing at least one coded current picture using the wrap-around padding process, wherein the wrap-around padding process is applied at boundaries of subpictures.

公开(公告)号：US20240236443A1

公开(公告)日：2024-07-11

申请号：US18405431

申请日：2024-01-05

Applicant: TENCENT AMERICA LLC

Inventor： Arianne HINDS ,  Paul Spencer DAWKINS ,  Stephan WENGER

IPC: H04N21/81

CPC classification number: H04N21/8146

Abstract: There is included a method and apparatus including computer code configured to cause a processor or processors to parse a scene file to extract scene file data, send the scene file data to a converter, and translate, by the converter and based on a metadata framework, the scene file data from a first scene graph format to a second scene graph format compatible with a renderer interface, and the metadata framework comprises an organization of metadata into at least one of systems and subsystems of the systems comprising collections of information common across a plurality of scene graph formats, and the metadata is specified in an Immersive Technologies Media Format.

公开(公告)号：US20240179203A1

公开(公告)日：2024-05-30

申请号：US18432858

申请日：2024-02-05

Applicant: TENCENT AMERICA LLC

Inventor： Arianne HINDS ,  Stephan WENGER

IPC: H04L65/612 ,  G06N3/02 ,  G06T7/55 ,  H04L65/75

CPC classification number: H04L65/612 ,  G06N3/02 ,  G06T7/55 ,  H04L65/75 ,  G06T2207/10016 ,  G06T2207/20081 ,  G06T2207/20084

Abstract: A method, computer program, and computer system is provided for streaming immersive media. Content is ingested in a first two-dimension format or a first three-dimensional format, whereby the format references a neural network. The ingested content is converted to a second two-dimensional or a second three-dimensional format based on the referenced neural network. The converted content is streamed to a client end-point, such as a television, a computer, a head-mounted display, a lenticular light field display, a holographic display, an augmented reality display, or a dense light field display.