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    Method and device for weighted prediction for image/video coding
    83.
    发明授权
    Method and device for weighted prediction for image/video coding 有权

    公开(公告)号：US12022128B2

    公开(公告)日：2024-06-25

    申请号：US17858707

    申请日：2022-07-06

    Applicant: LG Electronics Inc.

    Inventor： Seethal Paluri ,  Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

    IPC: H04N19/70 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51

    CPC classification number: H04N19/70 ,  H04N19/137 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/132

    Abstract: According to the present document, a video decoding method performed by a video decoding apparatus may comprise the steps of: parsing a first flag and a second flag from a bitstream, wherein the first flag is related to whether weighted prediction is applied to slices referring to a picture parameter set, and the second flag is related to whether information relating to the weighted prediction exists in a picture header; parsing a prediction weighted table syntax from the picture header based on the first flag and the second flag; generating prediction samples for a current block in a current picture based on syntax elements within the prediction weighted table syntax; generating residual samples based on residual information; and generating reconstructed samples based on the prediction samples and the residual samples, wherein the second flag is parsed from the picture parameter set based on the first flag.

    Image decoding method and apparatus using same
    84.
    发明授权
    Image decoding method and apparatus using same 有权

    公开(公告)号：US11985331B2

    公开(公告)日：2024-05-14

    申请号：US18133915

    申请日：2023-04-12

    Applicant: LG Electronics Inc.

    Inventor： Hendry Hendry ,  Joonyoung Park ,  Chulkeun Kim ,  Byeongmoon Jeon ,  Jungsun Kim

    IPC: H04N19/00 ,  H04N7/00 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/423 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70

    CPC classification number: H04N19/159 ,  H04N7/00 ,  H04N19/105 ,  H04N19/172 ,  H04N19/184 ,  H04N19/423 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70

    Abstract: An image decoding method according to the present invention includes: receiving information on a set of reference pictures for configuring a set of reference pictures of a current picture, wherein the information on the set of reference pictures includes the most significant bit (MSB) information that may calculate the MSB of the picture order count (POC) of a long-term reference picture relative to the current picture, and flag information that represents whether there is MSB information; and eliciting the set of reference pictures by using received MSB information when the flag information is 1, and performing marking on the reference picture, wherein the flag information may be 1 when a temporal sub-layer identifier is 0, and there is at least one POC value for which a remainder obtained by dividing by a maximum value MaxPicOrderCntLsb capable of being represented by the LSB is the same as the least significant bit (LSB) of the POC of the long-term reference picture, in a set of POCs of a previous picture including POC values related to the previous picture that may not be discarded without affecting whether other pictures of the same temporal layer may be decoded.

    Mixed NAL unit type based-video encoding/decoding method and apparatus, and method for transmitting bitstream
    86.
    发明授权
    Mixed NAL unit type based-video encoding/decoding method and apparatus, and method for transmitting bitstream 有权

    公开(公告)号：US11973957B2

    公开(公告)日：2024-04-30

    申请号：US18200305

    申请日：2023-05-22

    Applicant: LG Electronics Inc.

    Inventor： Hendry Hendry

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

    CPC classification number: H04N19/136 ,  H04N19/174 ,  H04N19/188

    Abstract: Disclosed herein are an image encoding and decoding method and apparatus. The image decoding method may include obtaining video coding layer (VCL) network abstraction layer (NAL) unit type information of a current picture from a bitstream, determining a NAL unit type of each of a plurality of slices included in the current picture, based on the obtained VCL NAL unit type information, and decoding the plurality of slices based on the determined NAL unit type. The current picture may include a first subpicture and a second subpicture having different NAL unit types based on that at least some of the plurality of slices have different NAL unit types, and a NAL unit type of the second subpicture may be determined based on a NAL unit type of the first subpicture.

    Mixed NAL unit type-based image encoding/decoding method and device, and method for transmitting bitstream
    88.
    发明授权
    Mixed NAL unit type-based image encoding/decoding method and device, and method for transmitting bitstream 有权

    公开(公告)号：US11902556B2

    公开(公告)日：2024-02-13

    申请号：US17902555

    申请日：2022-09-02

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry Hendry

    IPC: H04N19/46 ,  H04N19/174 ,  H04N19/169

    CPC classification number: H04N19/46 ,  H04N19/174 ,  H04N19/188

    Abstract: An image encoding/decoding method and apparatus are provided. The image decoding method comprises obtaining, from a bitstream, video coding layer (VCL) network abstraction layer (NAL) unit type information of a current picture and first flag information specifying whether a subpicture included in the current picture is treated as one picture, determining a NAL unit type of each of a plurality of slices included in the current picture, based on the obtained VCL NAL unit type information, and decoding the plurality of slices based on the determined NAL unit type and the first flag information. The current picture may comprise two or more subpictures based on at least some of the plurality of slices having different NAL unit types, and the first flag information may have a predetermined value specifying that each of the two or more subpictures is treated as one picture based on at least some of the plurality of slices having different NAL unit types.

    Method and device for signaling information related to slice in image/video encoding/decoding system
    89.
    发明授权
    Method and device for signaling information related to slice in image/video encoding/decoding system 有权

    公开(公告)号：US11902528B2

    公开(公告)日：2024-02-13

    申请号：US17966238

    申请日：2022-10-14

    Applicant: LG Electronics Inc.

    Inventor： Hendry Hendry ,  Seethal Paluri ,  Seunghwan Kim

    IPC: H04N19/132 ,  H04N19/70 ,  H04N19/174 ,  H04N19/176

    CPC classification number: H04N19/132 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70

    Abstract: A method by which a video decoding device decodes a video, according to the present document, can comprise the steps of: parsing, from a bitstream, number information related to the number of slices of which the height within a tile of a current picture is explicitly signaled; parsing, from the bitstream, on the basis of the number information, height information related to the height of the slices of which the height is explicitly signaled; deriving the number of slices in the tile on the basis of the number information and the height information; generating prediction samples by predicting the current block of the current picture on the basis of the slices within the tile; generating reconstructed samples on the basis of the prediction samples; and generating a reconstructed picture for the current picture on the basis of the reconstructed samples.

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