IMAGE ENCODING/DECODING METHOD, BITSTREAM TRANSMISSION METHOD, AND RECORDING MEDIUM STORING BITSTREAM THEREIN

    公开(公告)号:US20250150639A1

    公开(公告)日:2025-05-08

    申请号:US18838153

    申请日:2023-04-12

    Abstract: An image encoding/decoding method, a bitstream transmission method, and a computer-readable recording medium storing the bitstream therein are provided. The image decoding method according to the present disclosure, which is an image decoding method performed by an image decoding device, may comprise the steps of: constructing a prediction candidate list for a current block; deriving an error value for the current block on the basis of whether a reference picture referred to by a prediction candidate in the prediction candidate list is a resampled reference picture; and reordering an order of the prediction candidates in the prediction candidate list on the basis of the error value, wherein the error value is derived to a predetermined value on the basis of the reference picture being a resampled reference picture.

    IMAGE ENCODING/DECODING METHOD AND APPARATUS BASED ON PALETTE MODE, AND RECORDING MEDIUM THAT STORES BITSTREAM

    公开(公告)号:US20230179760A1

    公开(公告)日:2023-06-08

    申请号:US17912692

    申请日:2021-03-19

    CPC classification number: H04N19/105 H04N19/186 H04N19/176 H04N19/46

    Abstract: An image encoding/decoding method and apparatus are provided. The image decoding method comprises obtaining palette prediction information and palette index information of a current block from a bitstream, constructing a palette table for the current block based on the palette prediction information, generating a palette index map for the current block based on the palette index information, and decoding the current block based on the palette table and the palette index map. The palette prediction information may comprise run-value information specifying a first palette entry reused in the palette table among palette entries in the palette predictor for the current block, the run-value information may be obtained from the bitstream only when an index value of the first palette entry is smaller than a first size of the palette predictor, and last run-value information of the palette predictor may have a first value for terminating search of the first palette entry, based on the first palette entry being a last reused palette entry in the palette table.

    IMAGE ENCODING/DECODING METHOD, METHOD OF TRANSMITTING BITSTREAM, AND RECORDING MEDIUM STORING BITSTREAM

    公开(公告)号:US20250168411A1

    公开(公告)日:2025-05-22

    申请号:US19030043

    申请日:2025-01-17

    Abstract: An image encoding/decoding method, a bitstream transmission method, and a computer-readable recording medium for storing a bitstream are provided. The image decoding method according to the present disclosure is an image decoding method performed by an image decoding device, and may be an image decoding method comprising the steps of: obtaining size information from a neural-network post-filter characteristics (NNPFC) supplemental enhancement information (SEI) message; and determining the size of an output picture on the basis of the size information, wherein the size information comprises information on the numerator value of the ratio between the size of the output picture and the size of an input picture and information on the denominator value of the ratio.

    IMAGE ENCODING/DECODING METHOD, METHOD FOR TRANSMITTING BITSTREAM, AND RECORDING MEDIUM STORING BITSTREAM

    公开(公告)号:US20250071258A1

    公开(公告)日:2025-02-27

    申请号:US18723700

    申请日:2023-04-12

    Abstract: An image encoding/decoding method, a bitstream transmission method, and a computer-readable recording medium storing a bitstream are provided. The image decoding method performed by an image decoding apparatus, according to the present disclosure, comprises the steps of: on the basis of whether or not reordering of prediction candidates in a merge mode with motion vector difference (MMVD) mode is activated, determining whether or not to reorder the prediction candidates; identifying a prediction candidate indicated by prediction candidate identification information from the prediction candidates or the reordered prediction candidates; and deriving an offset of the MMVD mode on the basis of the identified prediction candidate, wherein the prediction candidate identification information is acquired from a bitstream.

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