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    Video encoding method using offset adjustment according to classification of pixels by maximum encoding units and apparatus thereof, and video decoding method and apparatus thereof
    11.
    发明授权
    Video encoding method using offset adjustment according to classification of pixels by maximum encoding units and apparatus thereof, and video decoding method and apparatus thereof 有权
    使用通过最大编码单位及其装置的像素分类的偏移调整的视频编码方法及其视频解码方法及其装置

    公开(公告)号：US09538194B2

    公开(公告)日：2017-01-03

    申请号：US14656383

    申请日：2015-03-12

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Elena Alshina ,  Alexander Alshin

    IPC: H04N19/70 ,  H04N19/176 ,  H04N19/117 ,  H04N19/463 ,  H04N19/14 ,  H04N19/182 ,  H04N19/82 ,  H04N19/96 ,  H04N19/186 ,  H04N19/65 ,  H04N19/136

    CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/136 ,  H04N19/14 ,  H04N19/182 ,  H04N19/186 ,  H04N19/463 ,  H04N19/65 ,  H04N19/82 ,  H04N19/96

    Abstract: A video decoding method includes extracting offset mergence information of a current largest coding unit (LCU), the offset mergence information indicating whether to adopt a second offset parameter as a first offset parameter of the current LCU; reconstructing the first offset parameter of the current LCU based on the offset mergence information, the first offset parameter including an offset type, an offset value, and an offset class of the current LCU; determining whether the current LCU is an edge type or a band type, based on the offset type; determining an edge direction according to the edge type or a band range according to the band type, based on the offset class; determining a difference value between reconstructed pixels and original pixels included in the offset class, based on the offset value; and adjusting pixel values of reconstructed pixels based on the difference value.

    Abstract translation: 视频解码方法包括提取当前最大编码单元（LCU）的偏移合并信息，该偏移合并信息指示是否采用第二偏移参数作为当前LCU的第一偏移参数; 基于偏移合并信息重构当前LCU的第一偏移参数，第一偏移参数包括当前LCU的偏移类型，偏移值和偏移等级; 基于偏移类型确定当前LCU是边缘类型还是带类型; 基于偏移等级，根据边缘类型或根据频带类型的频带范围确定边缘方向; 基于所述偏移值来确定所述偏移类别中包括的重建像素与原始像素之间的差值; 以及基于所述差值来调整重构像素的像素值。

    VIDEO DECODING METHOD AND DEVICE THEREFOR, AND VIDEO ENCODING METHOD AND DEVICE THEREFOR
    18.
    发明申请
    VIDEO DECODING METHOD AND DEVICE THEREFOR, AND VIDEO ENCODING METHOD AND DEVICE THEREFOR 有权

    公开(公告)号：US20250047871A1

    公开(公告)日：2025-02-06

    申请号：US18922558

    申请日：2024-10-22

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Elena ALSHINA ,  Alexander Alshin

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/573

    Abstract: Provided is a video decoding method including: obtaining a first motion vector indicating a first reference block of a current block in a first reference picture and a second motion vector indicating a second reference block of the current block in a second reference picture; obtaining a parameter related to pixel group unit motion compensation of the current block, based on at least one of information of the parameter related to the pixel group unit motion compensation and a parameter related to an image including the current picture; generating a prediction block by performing, with respect to the current block, block unit motion compensation based on the first motion vector and the second motion vector and performing the pixel group unit motion compensation based on the parameter related to the pixel group unit motion compensation; and reconstructing the current block. Here, a pixel group may include at least one pixel.

    Video decoding method and device therefor, and video encoding method and device therefor
    19.
    发明授权
    Video decoding method and device therefor, and video encoding method and device therefor 有权

    公开(公告)号：US12160590B2

    公开(公告)日：2024-12-03

    申请号：US18514011

    申请日：2023-11-20

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Elena Alshina ,  Alexander Alshin

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/573

    Abstract: Provided is a video decoding method including: obtaining a first motion vector indicating a first reference block of a current block in a first reference picture and a second motion vector indicating a second reference block of the current block in a second reference picture; obtaining a parameter related to pixel group unit motion compensation of the current block, based on at least one of information of the parameter related to the pixel group unit motion compensation and a parameter related to an image including the current picture; generating a prediction block by performing, with respect to the current block, block unit motion compensation based on the first motion vector and the second motion vector and performing the pixel group unit motion compensation based on the parameter related to the pixel group unit motion compensation; and reconstructing the current block. Here, a pixel group may include at least one pixel.

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