METHOD AND DEVICE FOR ENCODING/DECODING MOTION VECTOR

    公开(公告)号:US20230064795A1

    公开(公告)日:2023-03-02

    申请号:US17971883

    申请日:2022-10-24

    Abstract: A motion vector encoding apparatus includes: a predictor configured to obtain motion vector predictor candidates of a plurality of predetermined motion vector resolutions by using a spatial candidate block and a temporal candidate block of a current block, and to determine motion vector predictor of the current block, a motion vector of the current block, and a motion vector resolution of the current block by using the motion vector predictor candidates; and an encoder configured to encode information representing the motion vector predictor of the current block, a residual motion vector between the motion vector of the current block and the motion vector predictor of the current block, and information representing the motion vector resolution of the current block, wherein the plurality of predetermined motion vector resolutions include a resolution of a pixel unit that is greater than a resolution of one-pel unit.

    IMAGE ENCODING METHOD AND APPARATUS, AND IMAGE DECODING METHOD AND APPARATUS

    公开(公告)号:US20220256152A1

    公开(公告)日:2022-08-11

    申请号:US17734685

    申请日:2022-05-02

    Abstract: Provided is a method of decoding motion information characterized in that information for determining motion-related information includes spatial information and time information, wherein the spatial information indicates a direction of spatial prediction candidates used for sub-units from among spatial prediction candidates located on a left side and an upper side of a current prediction unit, and the time information indicates a reference prediction unit of a previous picture used for prediction of the current prediction unit. Further, an encoding apparatus or a decoding apparatus capable of performing the above described encoding or decoding method may be provided.

    METHOD FOR ENCODING/DECODING IMAGE AND DEVICE THEREFOR

    公开(公告)号:US20200329241A1

    公开(公告)日:2020-10-15

    申请号:US16092397

    申请日:2016-10-10

    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 AND DEVICE FOR ENCODING OR DECODING LUMA BLOCK AND CHROMA BLOCK

    公开(公告)号:US20190260992A1

    公开(公告)日:2019-08-22

    申请号:US16340323

    申请日:2016-10-10

    Abstract: Provided are a method and device for encoding or decoding a luma block and a chroma block. An image decoding method and device according to an embodiment include an image decoding method including obtaining, from a bitstream, partitioning information for a luma block; partitioning a current luma block in at least one direction, thus partitioning the current luma block into at least two luma blocks, when the partitioning information indicates that the current luma block is to be partitioned to a next level, and obtaining, from the bitstream, merge information about a current chroma block corresponding to the current luma block; performing decoding on the current luma block when the partitioning information indicates that the current luma block is not to be partitioned; partitioning the current chroma block into at least two chroma blocks corresponding to the at least two luma blocks when the partitioning information indicates that the current luma block is to be partitioned to the next level; and performing decoding on the current chroma block when the partitioning information indicates that the current luma block is not to be partitioned or the merge information indicates that the partitioning of the current chroma block is to be discontinued.

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

    公开(公告)号:US20190246106A1

    公开(公告)日:2019-08-08

    申请号:US16339270

    申请日:2016-10-10

    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.

Patent Agency Ranking