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    VIDEO DECODING METHOD, VIDEO ENCODING METHOD AND TRANSMISSION METHOD
    11.
    发明专利
    VIDEO DECODING METHOD, VIDEO ENCODING METHOD AND TRANSMISSION METHOD 未知

    公开(公告)号：FI4090025T3

    公开(公告)日：2025-04-30

    申请号：FI22175536

    申请日：2016-12-05

    Applicant: LG ELECTRONICS INC

    Inventor： SEO JUNGDONG ,  LIM JAEHYUN

    IPC: H04N19/513 ,  H04N19/105 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44

    Abstract: An image decoding method performed by a decoding apparatus comprises obtaining information on an inter prediction mode for a first target block; deriving motion information of the first target block based on the information on the inter prediction mode; deriving modified motion information of the first target block by searching for position with a minimum sum of absolute differences (SAD) value within a predetermined area, based on the motion information of the first target block and bi-prediction; configuring a merge candidate list for a second target block to which a merge mode is applied, based on a spatial neighboring block and a temporal neighboring block of the second target block; obtaining a merge index and residual information for the second target block; selecting one of merge candidates constituting the merge candidate list based on the merge index for the second target block; deriving motion information of the second target block based on the selected merge candidate; generating prediction samples for the second target block by performing inter prediction based on the motion information of the second target block; generating residual samples for the second target block based on the residual information; and generating reconstructed samples for the second target block based on the prediction samples and the residual samples.The merge candidates include a spatial motion information candidate and a temporal motion information candidate. The spatial motion information candidate is derived based on the spatial neighboring block and the temporal motion information candidate is derived based on the temporal neighboring block. In a case where the temporal neighboring block is the first target block, the temporal motion information candidate is derived based on the modified motion information of the first target block rather than the motion information of the first target block. In a case where the spatial neighboring block is the first target block, the spatial motion information candidate is derived based on the motion information of the first target block rather than the modified motion information of the first target block.

    Method and device for performing image decoding on basis of intra prediction in image coding system
    15.
    发明专利
    Method and device for performing image decoding on basis of intra prediction in image coding system 未知

    公开(公告)号：AU2021201808A1

    公开(公告)日：2021-04-22

    申请号：AU2021201808

    申请日：2021-03-23

    Applicant: LG ELECTRONICS INC

    Inventor： YOO SUNMI ,  LEE JAEHO ,  CHOI JANGWON ,  SEO JUNGDONG ,  HEO JIN

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

    Abstract: Disclosed is a video decoding method performed by a decoding device, the method comprising: obtaining prediction information and residual information for a current block from a bitstream; deriving an intra-prediction mode of the current block based on the prediction information; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving reference samples for prediction of a target sample of the current block among the neighboring samples based on a position of the target sample and a prediction angle of the intra-prediction mode; determining an interpolation filter for the target sample based on the intra-prediction mode and a size of the current block; deriving a prediction sample of the target sample based on the interpolation filter and the reference samples; deriving a residual sample of the target sample based on the residual information; and generating a reconstructed picture based on the prediction sample and the residual sample, wherein determining the interpolation filter for the target sample based on the intra-prediction mode and the size of the current block comprises: determining whether the size of the current block is smaller than a first specific value; and based on the size of the current block being smaller than the first specific value, determining whether the prediction angle of the intra-prediction mode is smaller than a second specific value, wherein based on the size of the current block being not smaller than the first specific value, the interpolation filter for the target sample is derived as a Gaussian filter, wherein based on the size of the current block being smaller than the first specific value and the prediction angle of the intra-prediction mode being smaller than the second specific value, the interpolation filter for the target sample is derived as a cubic filter, and wherein based on the size of the current block being smaller than the first specific value and the prediction angle of the intra prediction mode being not smaller than the second specific value, the interpolation filter for the target sample is derived as the Gaussian filter.

    Method and device for performing image decoding on basis of intra prediction in image coding system
    18.
    发明专利
    Method and device for performing image decoding on basis of intra prediction in image coding system 未知

    公开(公告)号：AU2021201808B2

    公开(公告)日：2022-05-12

    申请号：AU2021201808

    申请日：2021-03-23

    Applicant: LG ELECTRONICS INC

    Inventor： YOO SUNMI ,  LEE JAEHO ,  CHOI JANGWON ,  SEO JUNGDONG ,  HEO JIN

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

    Abstract: Disclosed is a video decoding method performed by a decoding device, the method comprising: obtaining prediction information and residual information for a current block from a bitstream; deriving an intra-prediction mode of the current block based on the prediction information; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving reference samples for prediction of a target sample of the current block among the neighboring samples based on a position of the target sample and a prediction angle of the intra-prediction mode; determining an interpolation filter for the target sample based on the intra-prediction mode and a size of the current block; deriving a prediction sample of the target sample based on the interpolation filter and the reference samples; deriving a residual sample of the target sample based on the residual information; and generating a reconstructed picture based on the prediction sample and the residual sample, wherein determining the interpolation filter for the target sample based on the intra-prediction mode and the size of the current block comprises: determining whether the size of the current block is smaller than a first specific value; and based on the size of the current block being smaller than the first specific value, determining whether the prediction angle of the intra-prediction mode is smaller than a second specific value, wherein based on the size of the current block being not smaller than the first specific value, the interpolation filter for the target sample is derived as a Gaussian filter, wherein based on the size of the current block being smaller than the first specific value and the prediction angle of the intra-prediction mode being smaller than the second specific value, the interpolation filter for the target sample is derived as a cubic filter, and wherein based on the size of the current block being smaller than the first specific value and the prediction angle of the intra prediction mode being not smaller than the second specific value, the interpolation filter for the target sample is derived as the Gaussian filter.

    Depth picture coding method and device in video coding
    20.
    发明专利
    Depth picture coding method and device in video coding 未知

    公开(公告)号：AU2015328955B2

    公开(公告)日：2018-01-04

    申请号：AU2015328955

    申请日：2015-09-25

    Applicant: LG ELECTRONICS INC

    Inventor： NAM JUNGHAK ,  YEA SEHOON ,  SEO JUNGDONG ,  YOO SUNMI

    IPC: H04N19/597 ,  H04N19/50

    Abstract: The present invention relates to 3D video coding device and method. A decoding method, according to the present invention, provides a 3D video decoding method. A decoding method comprises the steps of: obtaining a disparity value on the basis of a reference view and a predetermined value; deriving movement information of a current block in a depth picture on the basis of the disparity value; and generating a prediction sample of the current block on the basis of the movement information, wherein the reference view is a view of a reference picture in a reference picture list. According to the present invention, even when a base view cannot be accessed, a disparity vector can be derived on the basis of an available reference view index in a decoded picture buffer (DPB), and coding efficiency can be enhanced.

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