公开(公告)号：US20250071336A1

公开(公告)日：2025-02-27

申请号：US18943189

申请日：2024-11-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume LAROCHE ,  Naël OUEDRAOGO ,  Patrice ONNO

IPC: H04N19/70 ,  H04N19/174

Abstract: There is described a method of decoding video data from a bitstream. The bitstream comprising video data corresponding to one or more slices. The decoding comprises parsing the syntax elements, and not permitting use of a subpicture and/or parsing of subpicture information in combination with at least one syntax element that indicates that a picture to be decoded contains only one slice. The bitstream is decoded using said syntax elements.

公开(公告)号：US20250071284A1

公开(公告)日：2025-02-27

申请号：US18825978

申请日：2024-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyeong Moon JANG ,  Seethal PALURI

IPC: H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure may include: obtaining palette information and palette index prediction information of a current block from a bitstream; constructing a palette predictor for the current block based on the palette information and constructing a palette table for the current block based on the palette predictor; generating a palette index map for the current block based on the palette index prediction information; and decoding the current block based on the palette table and the palette index map, wherein the palette predictor may be initialized using a user defined palette entry obtained from at least one of an adaptation parameter set (APS), a picture parameter set (PPS) or a slice header.

公开(公告)号：US20250071259A1

公开(公告)日：2025-02-27

申请号：US18725337

申请日：2022-12-27

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Kazushi SATO ,  Yue YU ,  Haoping YU

IPC: H04N19/105 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70

Abstract: A system includes a processor and a non-transitory computer readable medium in communication with the processor, the non-transitory computer readable medium having encoded thereon a set of instructions executable by the processor to determine intra prediction information of a current block, obtain a multiple reference line (MRL) index from the plurality of syntax elements, decode a first candidate reference line and a second candidate reference line based, at least in part, on the MRL index, and generate a prediction block based, at least in part, on intra prediction performed based on the plurality of syntax elements.

公开(公告)号：US12238394B2

公开(公告)日：2025-02-25

申请号：US17763346

申请日：2020-09-23

Applicant: VID SCALE, INC.

Inventor： Ahmed Hamza ,  Yong He

IPC: H04N19/174 ,  H04N19/597 ,  H04N21/854

Abstract: Systems, methods, and instrumentalities are disclosed that relate to the processing of a media container file associated with 3D video data. The media container file may indicate that certain video-based point cloud compression (V-PCC) component tracks may be played together as a playout group. These V-PCG component tracks may represent respective encoded versions of one or more V-PCC components, and a video decoding device may play the tracks together in response to determining that the tracks belong to the same playout track group. The video decoding device may also determine from the media container file that certain PCC component tracks include tile groups that correspond to different objects in a point cloud or different parts of a same object in the point cloud. The video decoding device may decode these tile groups independently from each other so that a subset of the objects or parts of the point cloud may be accessed without also accessing the rest of the objects or parts.

公开(公告)号：US12238341B2

公开(公告)日：2025-02-25

申请号：US18430805

申请日：2024-02-02

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Wei Zhang ,  Junyan Huo ,  Yanzhuo Ma

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/174 ,  H04N19/30 ,  H04N19/60 ,  H04N19/96

Abstract: A point cloud encoding and decoding method, an encoder, and a decoder are provided. The encoder determines a processing order of point cloud data during point cloud encoding. The encoder determines a coordinate-axis-order index corresponding to the processing order. The encoder encodes the coordinate-axis-order index and signals encoded bits into a bitstream. The encoder processes the point cloud data according to the processing order, to obtain point cloud data to-be-encoded. The encoder encodes the point cloud data to-be-encoded and signals encoded bits into the bitstream. The decoder parses a bitstream to obtain a coordinate-axis-order index, determines a processing order of point cloud data during point cloud decoding according to the coordinate-axis-order index, parses the bitstream to obtain recovered data of the point cloud data, and determines a position of coordinate data of the point cloud data in a storage unit of the recovered data according to the processing order.

公开(公告)号：US20250056056A1

公开(公告)日：2025-02-13

申请号：US18929397

申请日：2024-10-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： GUILLAUME LAROCHE ,  PATRICE ONNO ,  Naël OUEDRAOGO

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/174

Abstract: A method of decoding video data from a bitstream, the bitstream comprising video data corresponding to multiple slices, wherein the bitstream comprises a header comprising syntax elements to be used when decoding one or more slices; wherein the decoding comprising parsing the picture header, parsing at least one APS ID related syntax element prior to syntax elements relating to decoding tools; and decoding said bitstream using said syntax elements.

公开(公告)号：US20250056055A1

公开(公告)日：2025-02-13

申请号：US18929344

申请日：2024-10-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： GUILLAUME LAROCHE ,  PATRICE ONNO ,  Naël OUEDRAOGO

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/174

Abstract: A method of decoding video data from a bitstream, the bitstream comprising video data corresponding to multiple slices, wherein the bitstream comprises a header comprising syntax elements to be used when decoding one or more slices; wherein the decoding comprising parsing the picture header, parsing at least one APS ID related syntax element prior to syntax elements relating to decoding tools; and decoding said bitstream using said syntax elements.

公开(公告)号：US12219177B2

公开(公告)日：2025-02-04

申请号：US18368848

申请日：2023-09-15

Applicant: TENCENT AMERICA LLC

Inventor： Byeongdoo Choi ,  Stephan Wenger ,  Shan Liu

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining video data, determining an access unit delimiter syntax of at least one network abstraction layer (NAL) unit of the video data, determining whether the access unit delimiter syntax indicates a slice type value of the NAL unit, determining whether the access unit delimiter syntax of the NAL unit indicates at least one of a video coding layer (VCL) value and an access unit order count value of the NAL unit, and signaling access unit boundary values of the NAL unit according to whether the access unit delimiter syntax indicates at least one of the slice type value, the VCL value, and the access unit order count value.

公开(公告)号：US12212783B2

公开(公告)日：2025-01-28

申请号：US17702404

申请日：2022-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/44 ,  H04N19/46

Abstract: A method of decoding is provided. The method includes receiving a picture unit (PU) including zero or one picture header (PH) network abstraction layer (NAL) unit and only one coded picture; and decoding the only one coded picture from the PU to obtain a decoded picture. A corresponding method of encoding is also provided. The method includes generating a PU including zero or one PH NAL units and only one coded picture; encoding the PU into a video bitstream; and storing the video bitstream for communication toward a video decoder.

公开(公告)号：US20250024083A1

公开(公告)日：2025-01-16

申请号：US18767863

申请日：2024-07-09

Applicant: Comcast Cable Communications, LLC

Inventor： Alexander GILADI

IPC: H04N19/70 ,  H04N19/136 ,  H04N19/169 ,  H04N19/174

Abstract: Methods and systems for generating differential header data are disclosed. First header data associated with a first fragment of a content item may be determined. Second header data associated with a second fragment of the content item may be determined. The first fragment of the content item may precede the second fragment of the content item. Based on comparing the first header data to the second header data, at least one difference between the first header data and the second header data may be determined. Based on the at least one difference between the first header data and the second header data, differential header data associated with the second fragment may be determined. The second fragment may be encoded. The encoded second fragment may comprise a header that comprises the differential header data.