公开(公告)号：US20240004831A1

公开(公告)日：2024-01-04

申请号：US18368423

申请日：2023-09-14

Applicant: TENCENT AMERICA LLC

Inventor： Shuai ZHAO ,  Stephan WENGER ,  Shan LIU

IPC: G06F16/11 ,  H04L67/02 ,  G06T17/00

CPC classification number: G06F16/116 ,  H04L67/02 ,  G06T17/00 ,  G06F8/38

Abstract: Systems, methods, and devices for managing media storage and delivery, including obtaining, by a media access function (MAF), a glTF file corresponding to a scene; determining that the glTF file has a CBOR format; converting the glTF file into a converted glTF file having a JSON format using a first CBOR parser function implemented by the MAF; and obtaining media content corresponding to the scene based on the converted glTF file.

公开(公告)号：US20230421759A1

公开(公告)日：2023-12-28

申请号：US18462014

申请日：2023-09-06

Applicant: TENCENT AMERICA LLC

Inventor： Yixin DU ,  Shan LIU ,  Xin ZHAO

IPC: H04N19/117 ,  H04N19/70 ,  H04N19/132 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/70 ,  H04N19/132 ,  H04N19/82

Abstract: In a method for filtering in video decoding, a coded video bitstream that includes filter shape index information is received. A filter shape configuration of a video filter is determined based on the filter shape index information. The filter shape index information indicates that a number of filter taps of the filter shape configuration is less than five. Offset values associated with the filter shape configuration of the video filter are determined. The video filter is applied on a sample based on the offset values associated with the filter shape configuration.

公开(公告)号：US20230421754A1

公开(公告)日：2023-12-28

申请号：US18244768

申请日：2023-09-11

Applicant: TENCENT AMERICA LLC

Inventor： Xin ZHAO ,  Yixin DU ,  Liang ZHAO ,  Madhu PERINGASSERY KRISHNAN ,  Shan LIU

IPC: H04N19/105 ,  H04N19/176 ,  G06N3/08 ,  H04N19/129 ,  H04N19/132

CPC classification number: H04N19/105 ,  H04N19/176 ,  G06N3/08 ,  H04N19/129 ,  H04N19/132

Abstract: A method, computer program, and computer system is provided for coding video data. Reference samples and magnitudes of transform coefficients corresponding to a current block of video data from an input to a neural network are identified. Sign values associated with the transform coefficients are predicted using neural networks. The video data is encoded/decoded based on the predicted sign values.

公开(公告)号：US20230412812A1

公开(公告)日：2023-12-21

申请号：US18143516

申请日：2023-05-04

Applicant: Tencent America LLC

Inventor： Samruddhi Yashwant KAHU ,  Madhu PERINGASSERY KRISHNAN ,  Xin ZHAO ,  Shan LIU

IPC: H04N19/13 ,  H04N19/91 ,  H04N19/18 ,  H04N19/176

CPC classification number: H04N19/13 ,  H04N19/91 ,  H04N19/18 ,  H04N19/176

Abstract: The various embodiments described herein include methods and systems for encoding and decoding video. In one aspect, a method includes obtaining video data that includes a first block. The method further includes determining a plurality of transform coefficients associated with the first block. The method also includes predicting respective coefficient signs for the plurality of transform coefficients. The method also includes entropy coding the first block including jointly signaling two or more of the predicted coefficient signs.

公开(公告)号：US20230412794A1

公开(公告)日：2023-12-21

申请号：US17982938

申请日：2022-11-08

Applicant: Tencent America LLC

Inventor： Guichun LI ,  Han GAO ,  Lien-Fei CHEN ,  Xin ZHAO ,  Shan LIU

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/88 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/88 ,  H04N19/176 ,  H04N19/46

Abstract: In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry determines, from a candidate list, a first affine-translational merge candidate for a prediction of a current block in a current picture. The first affine-translational merge candidate provides affine motion information associated with a first reference picture in a first reference list and translational motion information associated with a second reference picture in a second reference list. The processing circuitry generates a first prediction for a sample in the current block according to the affine motion information associated with the first reference picture, and generates a second prediction for the sample in the current block according to the translational motion information associated with the second reference picture. The processing circuitry reconstructs the sample of the current block according to a combination of the first prediction and the second prediction.

公开(公告)号：US20230388543A1

公开(公告)日：2023-11-30

申请号：US18127487

申请日：2023-03-28

Applicant: Tencent America LLC

Inventor： Jun TIAN ,  Chao HUANG ,  Xiang ZHANG ,  Xiaozhong XU ,  Shan LIU

IPC: H04N19/597 ,  H04N19/105 ,  H04N19/154 ,  H04N19/172 ,  H04N19/46

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/154 ,  H04N19/172 ,  H04N19/46

Abstract: A plurality of neighboring vertices of a current vertex in a current frame of a mesh is determined. The current frame corresponds to the mesh at a first time instance. Each of the plurality of neighboring vertices is connected to the current vertex through a respective edge in the mesh. A plurality of neighboring estimation errors of the plurality of neighboring vertices is determined. Each of the plurality of neighboring estimation errors indicates a difference between a reference vertex of a corresponding one of the plurality of neighboring vertices in a reference frame and the corresponding one of the plurality of neighboring vertices in the current frame. The reference frame corresponds to the mesh at a second time instance. A prediction residue of the current vertex is determined based on the plurality of neighboring estimation errors. Prediction information of the current vertex is generated based on the determined prediction residue.

公开(公告)号：US20230353792A1

公开(公告)日：2023-11-02

申请号：US18328480

申请日：2023-06-02

Applicant: Tencent America LLC

Inventor： Yixin DU ,  Xin ZHAO ,  Shan LIU

IPC: H04N19/186 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/82 ,  H04N19/186 ,  H04N19/86

Abstract: A method for filtering includes determining, by a processor, a first offset value by applying a non linear mapping based filter to first reconstructed samples at a first node along a loop filter chain that includes a plurality of video filters. The method further includes applying, by the processor, the first offset value to an intermediate reconstructed sample at a second node along the loop filter chain to generate a second reconstructed sample, wherein the second node is one of an input node of the loop filter chain or an output node of the loop filter chain.

公开(公告)号：US20230345046A1

公开(公告)日：2023-10-26

申请号：US18340274

申请日：2023-06-23

Applicant: TENCENT AMERICA LLC

Inventor： Xiang ZHANG ,  Wen GAO ,  Sehoon YEA ,  Shan LIU

IPC: H04N19/597 ,  H04N19/169 ,  H04N19/174

CPC classification number: H04N19/597 ,  H04N19/1883 ,  H04N19/174

Abstract: In a method for point cloud processing, a bitstream corresponding to a sequence of coded point cloud frames is received. Whether an implicit geometry partition is enabled for the sequence of coded point cloud frames is determined. An octree representing a geometry of points in a bounding box in a coded point cloud frame in the sequence of coded point cloud frames is reconstructed based on whether the implicit geometry partition is determined to be enabled for the sequence of coded point cloud frames.

公开(公告)号：US20230308672A1

公开(公告)日：2023-09-28

申请号：US18300102

申请日：2023-04-13

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo CHOI ,  Shan LIU ,  Stephen WENGER

IPC: H04N19/44 ,  H04N19/187 ,  H04N19/30

CPC classification number: H04N19/44 ,  H04N19/187 ,  H04N19/30

Abstract: A method of decoding may comprise: receiving a bitstream comprising compressed video/image data; parsing or deriving, from the bitstream, an output layer set mode indicator in a video parameter set (VPS); identifying output layer set signaling based on the output layer set mode indicator; identifying one or more picture output layers based on the identified output layer set signaling; and decoding the identified one or more picture output layers.

公开(公告)号：US20230300378A1

公开(公告)日：2023-09-21

申请号：US18323668

申请日：2023-05-25

Applicant: TENCENT AMERICA LLC

Inventor： Cheung AUYEUNG ,  Xiang LI ,  Shan LIU

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

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/186

Abstract: In a method of video encoding performed in a video encoder, prediction information for a sequence of pictures that are monochrome or include three color components that are coded separately is generated. A first syntax element indicating the sequence of pictures are monochrome or include three color components that are coded separately is generated. A coded video bitstream that includes at least the prediction information and the first syntax element is generated. A second syntax element of a coding tool for block-based delta pulse code modulation (BDPCM) for chroma component is not included in the coded video bitstream and inferred to indicate that the BDPCM for chroma component is disabled based on the sequence of pictures being monochrome or including three color components.