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    INTRA PREDICTION-BASED IMAGE CODING IN IMAGE CODING SYSTEM
    31.
    发明申请
    INTRA PREDICTION-BASED IMAGE CODING IN IMAGE CODING SYSTEM 有权

    公开(公告)号：US20220159239A1

    公开(公告)日：2022-05-19

    申请号：US17442270

    申请日：2020-03-23

    Applicant: LG Electronics Inc.

    Inventor： Jangwon CHOI ,  Jin HEO ,  Seunghwan KIM ,  Jaehyun LIM ,  Ling LI

    IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

    Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving an intra prediction type for a current block from intra prediction types; deriving a first intra prediction mode for a neighboring block to the left of the current block; deriving a second intra prediction mode for a neighboring block above the current block; constructing an intra prediction mode candidate list of the current block on the basis of the first intra prediction mode and the second intra prediction mode; deriving an intra prediction mode of the current block on the basis of the intra prediction mode candidate list; and generating prediction samples of the current block on the basis of the intra prediction type and the intra prediction mode.

    INTRA PREDICTION-BASED IMAGE CODING METHOD AND APPARATUS USING UNIFIED MPM LIST
    32.
    发明申请
    INTRA PREDICTION-BASED IMAGE CODING METHOD AND APPARATUS USING UNIFIED MPM LIST 有权

    公开(公告)号：US20220150537A1

    公开(公告)日：2022-05-12

    申请号：US17431348

    申请日：2020-02-26

    Applicant: LG ELECTRONICS INC.

    Inventor： Jin HEO ,  Sunmi YOO ,  Ling LI ,  Jangwon CHOI ,  Jungah CHOI

    IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/132

    Abstract: An image decoding method according to the present document comprises the steps of: acquiring, from a bitstream, reference line index information indicating a reference line to be used for intra prediction of a current block; constructing a most probable mode (MPM) list by deriving candidate intra prediction modes of the current block on the basis of the value of the reference line index information; deriving the intra prediction mode of the current block on the basis of the MPM list; generating prediction samples for the current block on the basis of the intra prediction mode; and generating restoration samples for the current block on the basis of the prediction samples, wherein, on the basis of the case in which the value of the reference line index information is not zero, one of the candidate intra prediction modes is a DC mode and the number of candidate intra prediction modes including the DC mode is 5.

    TRANSFORM COEFFICIENT CODING METHOD AND DEVICE
    34.
    发明申请
    TRANSFORM COEFFICIENT CODING METHOD AND DEVICE 有权

    公开(公告)号：US20220014787A1

    公开(公告)日：2022-01-13

    申请号：US17283906

    申请日：2019-10-07

    Applicant: LG Electronics Inc.

    Inventor： Sunmi YOO ,  Seunghwan KIM ,  Jungah CHOI ,  Ling LI ,  Jangwon CHOI ,  Jin HEO

    IPC: H04N19/60 ,  H04N19/124 ,  H04N19/176 ,  H04N19/12 ,  H04N19/132 ,  H04N19/18

    Abstract: An image decoding method according to the present document comprises the steps of: receiving a bitstream including residual information; deriving a quantized transform coefficient for a current block on the basis of the residual information included in the bitstream; deriving a residual sample for the current block on the basis of the quantized transform coefficient; and generating a restoration picture on the basis of the residual sample for the current block, wherein the residual information includes position information for indicating the position of a transform coefficient, which is not the last 0 in a transform block, and the position information can be derived if a transform skip is not applied to the transform block.

    METHOD AND APPARATUS FOR CODING INFORMATION ABOUT MERGE DATA
    37.
    发明申请
    METHOD AND APPARATUS FOR CODING INFORMATION ABOUT MERGE DATA 有权

    公开(公告)号：US20210321109A1

    公开(公告)日：2021-10-14

    申请号：US17353137

    申请日：2021-06-21

    Applicant: LG Electronics Inc.

    Inventor： Ling LI ,  Jaehyun LIM ,  Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG

    IPC: H04N19/132 ,  H04N19/119 ,  H04N19/46 ,  H04N19/159 ,  H04N19/176

    Abstract: A video decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: receiving a bitstream including information about merge data of a current block; checking mh intra flag information for mh intra prediction which is included in the information about the merge data; checking information about a merge triangle prediction on the basis of a checking result that a value of the mh intra flag information is related to checking the information about the merge triangle prediction included in the information about the merge data; deriving prediction samples for the current block on the basis of a result of checking the information about the merge triangle prediction; and generating a reconstructed picture on the basis of the prediction samples.

    IMAGE DECODING METHOD AND DEVICE USING ROTATION PARAMETERS IN IMAGE CODING SYSTEM FOR 360-DEGREE VIDEO
    38.
    发明申请
    IMAGE DECODING METHOD AND DEVICE USING ROTATION PARAMETERS IN IMAGE CODING SYSTEM FOR 360-DEGREE VIDEO 审中-公开

    公开(公告)号：US20200374558A1

    公开(公告)日：2020-11-26

    申请号：US16758732

    申请日：2018-07-04

    Applicant: LG ELECTRONICS INC.

    Inventor： Ling LI ,  Jaehyun LIM

    IPC: H04N19/597 ,  H04N19/46 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172

    Abstract: An image encoding method performed by an encoding device, according to the present invention, comprises the steps of: acquiring information associated with a 360-degree image in a 3D space; deriving rotation parameters for the 360-degree image; acquiring a projected picture by processing the 360-degree image on the basis of the rotation parameters for the 360-degree image, and a projection type; and generating, encoding and outputting 360-degree video information for the projected picture, wherein the projection type is equirectangular projection (ERP), and the 360-degree image in the 3D space is projected so that the specific position thereof in the 3D space, derived on the basis of the rotation parameters, is mapped at the center of the projected picture.

    METHOD OF INTERPOLATING HRTF AND AUDIO OUTPUT APPARATUS USING SAME
    40.
    发明申请
    METHOD OF INTERPOLATING HRTF AND AUDIO OUTPUT APPARATUS USING SAME 有权

    公开(公告)号：US20180048979A1

    公开(公告)日：2018-02-15

    申请号：US15674045

    申请日：2017-08-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Tung Chin LEE ,  Jongyeul SUH ,  Ling LI

    IPC: H04S7/00 ,  H04S3/00

    CPC classification number: H04S7/303 ,  H04R2227/003 ,  H04S1/007 ,  H04S3/008 ,  H04S7/305 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2400/15 ,  H04S2420/01

    Abstract: A method of interpolating a head-related transfer function (HRTF) and an audio output apparatus using the same are disclosed. The method includes receiving HRTF data corresponding to a point at which an altitude angle and an azimuth angle cross and receiving complementary information about a point at which the HRTF data is present, generating an HRTF interpolation signal corresponding to an altitude angle of a sound localization point, using HRTF data corresponding to two points constituting an altitude angle segment nearest the sound location point, calculating an amount of variation up to an azimuth angle θ of the sound localization point, using complementary information of two points constituting an azimuth angle segment nearest the sound localization point, and generating a final HRTF interpolation signal corresponding to the sound localization point by applying the amount of variation to the HRTF interpolation signal corresponding to the altitude angle of the sound localization point.

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