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    IMAGE DECODING METHOD AND APPARATUS USING SAME
    72.
    发明申请
    IMAGE DECODING METHOD AND APPARATUS USING SAME 有权

    公开(公告)号：US20220303549A1

    公开(公告)日：2022-09-22

    申请号：US17828625

    申请日：2022-05-31

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry HENDRY ,  Joonyoung PARK ,  Chulkeun KIM ,  Byeongmoon JEON ,  Jungsun KIM

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

    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.

    METHOD FOR ENCODING AND DECODING VIDEO, AND APPARATUS USING SAME
    73.
    发明申请
    METHOD FOR ENCODING AND DECODING VIDEO, AND APPARATUS USING SAME 有权

    公开(公告)号：US20220124363A1

    公开(公告)日：2022-04-21

    申请号：US17563743

    申请日：2021-12-28

    Applicant: LG ELECTRONICS INC.

    Inventor： Jaehyun LIM ,  Jungsun KIM ,  Seungwook PARK ,  Jaewon SUNG ,  Byeongmoon JEON ,  Joonyoung PARK ,  Youngjoon JEON ,  Younghee CHOI

    IPC: H04N19/52 ,  G06T9/00 ,  H04N19/176 ,  H04N19/182 ,  H04N19/159 ,  H04N19/31

    Abstract: The present invention relates to a technique for encoding and decoding video data, and more particularly, to a method for performing inter-prediction in an effective manner. The present invention combines an inter-prediction method using an AMVP mode and an inter-prediction method using a merge mode so as to propose a method for using the same candidate. The method for encoding video data proposed by the present invention comprises the following steps: receiving mode information on an inter-prediction method of a current block; determining, on the basis of the received mode information, whether the interprediction method to be applied to the current block is an AMVP mode or a merge mode; and selecting a candidate to derive motion information of the current block, wherein the candidate is selected in a left region, top region and corner region of the current block and in the same position block as the current block, and the AMVP mode and the merge mode are applied on the basis of the selected candidate.

    IMAGE DECODING METHOD AND APPARATUS USING SAME
    74.
    发明申请
    IMAGE DECODING METHOD AND APPARATUS USING SAME 有权

    公开(公告)号：US20210321118A1

    公开(公告)日：2021-10-14

    申请号：US17356255

    申请日：2021-06-23

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry HENDRY ,  Joonyoung PARK ,  Chulkeun KIM ,  Byeongmoon JEON ,  Jungsun KIM

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

    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.

    INTRA-PREDICTION METHOD, AND ENCODER AND DECODER USING SAME
    76.
    发明申请
    INTRA-PREDICTION METHOD, AND ENCODER AND DECODER USING SAME 有权

    公开(公告)号：US20210112274A1

    公开(公告)日：2021-04-15

    申请号：US17132378

    申请日：2020-12-23

    Applicant: LG ELECTRONICS INC.

    Inventor： Joonyoung PARK ,  Seungwook Park ,  Jaehyun LIM ,  Jungsun KIM ,  Younghee Choi ,  Byeongmoon Jeon ,  Yongjoon Jeon

    IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/117

    Abstract: The present invention relates to an intra-prediction method and to an encoder and decoder using same. The intra-prediction method according to one embodiment of the present invention comprises the steps of: deriving a prediction mode of a current block; and generating a prediction block with respect to the current block on the basis of the prediction mode of the current block. When the prediction mode of the current block is an intra-angular prediction mode, values of boundary samples from among left boundary samples and upper boundary samples of the prediction block, which are not positioned in a prediction direction of the intra-angular prediction mode, are derived on the basis of reference samples positioned in the prediction direction of the intra-angular prediction mode, and on the basis of adjacent reference samples.

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