Lg electronics inc. (20240414376). TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR
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TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR
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TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR
This abstract first appeared for US patent application 20240414376 titled 'TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR
Original Abstract Submitted
an image decoding method according to the present document comprises the steps of: updating an intra-prediction mode of a chroma block on the basis of an intra-prediction mode of a luma block corresponding to the chroma block on the basis of the intra-prediction mode of the chroma block being a cross-component linear model (cclm) mode; and determining a lfnst set including lfnst matrixes on the basis of the updated intra-prediction mode, wherein the updated intra-prediction mode is derived as an intra-prediction mode corresponding to a specific position in the luma block, and the updated intra-prediction mode is updated as an intra-dc mode on the basis of the intra-prediction mode, that corresponds to the specific position, being an intra-block copy (ibc) mode.
