METHOD AND DEVICE FOR ENCODING OR DECODING ENCODING UNIT OF PICTURE OUTLINE

    公开(公告)号:US20240155124A1

    公开(公告)日:2024-05-09

    申请号:US18415282

    申请日:2024-01-17

    Abstract: Provided are a method and apparatus for encoding or decoding a coding unit on an outline of a picture. An image decoding method and apparatus according to an embodiment determine whether a current coding unit extends across an outline of a picture, by comparing a location of the current coding unit in the picture to at least one of a width and a height of the picture, split the current coding unit in at least one direction into a plurality of coding units based on a shape of the current coding unit upon determining that the current coding unit extends across the outline of the picture, obtain block shape information and split type information of the current coding unit from a bitstream and split the current coding unit into a plurality of coding units based on the block shape information and the split type information upon determining that the current coding unit does not extend across the outline of the picture, and decode a coding unit that is no longer split among the plurality of coding units.

    METHOD FOR ENCODING/DECODING IMAGE AND DEVICE THEREFOR

    公开(公告)号:US20230283776A1

    公开(公告)日:2023-09-07

    申请号:US18144336

    申请日:2023-05-08

    CPC classification number: H04N19/119 H04N19/176

    Abstract: Provided is an image decoding method of decoding an image, the image decoding method including: obtaining at least one of block shape information and split shape information about a first coding unit included in the image, from a bitstream; determining at least one second coding unit included in the first coding unit based on at least one of the block shape information and the split shape information; and decoding the image based on the at least one second coding unit, wherein the block shape information indicates a shape of the first coding unit and the split shape information indicates whether the first coding unit is split into the at least one second coding unit. Also, provided is an image encoding method corresponding to the image decoding method. Also, provided is an image encoding apparatus and image decoding apparatus for respectively performing the image encoding method and image decoding method.

    METHOD FOR ENCODING/DECODING IMAGE AND APPARATUS THEREFOR

    公开(公告)号:US20210289204A1

    公开(公告)日:2021-09-16

    申请号:US16318010

    申请日:2017-07-13

    Abstract: According to an embodiment, an image decoding method and an image decoding apparatus capable of performing the image decoding method are provided. The image decoding method includes determining, based on image data obtained from a bitstream, a plurality of coding units included in a current slice that is one of a plurality of slices included in an image; determining a prediction method performed on a current coding unit that is one of the plurality of coding units; determining a quantization parameter of the current coding unit, based on whether the prediction method performed on the current coding unit is inter prediction or intra prediction; and decoding the image by using the determined quantization parameter. According to an embodiment, an image encoding method and an image encoding apparatus capable of performing the image encoding method involving processes opposite or similar to the image decoding method are provided.

    ENCODING METHOD AND DEVICE THEREFOR, AND DECODING METHOD AND DEVICE THEREFOR

    公开(公告)号:US20190281285A1

    公开(公告)日:2019-09-12

    申请号:US16345950

    申请日:2017-10-31

    Abstract: Provided is a video decoding method including obtaining, from a bitstream, split information indicating whether a current block is to be split; when the split information does not indicate that the current block is to be split, decoding the current block according to encoding information about the current block; and when the split information indicates that the current block is to be split, splitting the current block into at least two lower blocks, obtaining encoding order information indicating an encoding order of the at least two lower blocks of the current block from the bitstream, determining a decoding order of the at least two lower blocks according to the encoding order information, and decoding the at least two lower blocks according to the decoding order.

    VIDEO DECODING METHOD AND DEVICE, AND ENCODING METHOD AND DEVICE THEREFOR

    公开(公告)号:US20180352231A1

    公开(公告)日:2018-12-06

    申请号:US15775700

    申请日:2016-11-24

    Abstract: Provided are a video decoding method and a video decoding apparatus capable of performing the video decoding method including receiving a bitstream of an encoded video; obtaining, from the bitstream, shape information of one or more scanning units each consisting of a predetermined number of adjacent largest coding units from among a plurality of largest coding units split from a picture; determining a shape of the one or more scanning units, based on the obtained shape information; obtaining, from the bitstream, processing order information of the one or more scanning units of a current picture, and processing order information of largest coding units included in the one or more scanning units; determining a processing order of the one or more scanning units included in the current picture, based on the processing order information of the one or more scanning units; determining a processing order of largest coding units included in each of the one or more scanning units, based on the processing order information of largest coding units included in the one or more scanning units; and decoding a plurality of largest coding units included in the current picture according to the determined processing order of the one or more scanning units and the determined processing order of largest coding units included in each of the one or more scanning units.

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