公开(公告)号：US20240305775A1

公开(公告)日：2024-09-12

申请号：US18664990

申请日：2024-05-15

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Geonjung KO ,  Dongcheol KIM ,  Juhyung SON ,  Jaehong JUNG ,  Jinsam KWAK

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A video signal processing method comprises the steps of: receiving information for prediction of a current block; determining whether or not a merge mode is applied to the current block on the basis of the information for prediction; when a merge mode is applied to the current block, obtaining a first syntax element indicating whether or not a combined prediction is applied to the current block, wherein the combined prediction indicates a prediction mode that combines inter-prediction and intra-prediction; generating an inter-prediction block and an intra-prediction block of the current block when the first syntax element indicates that the combined prediction is applied to the current block; and generating a combined prediction block of the current block by weighted-summing the inter-prediction block and the intra-prediction block.

公开(公告)号：US20220368949A1

公开(公告)日：2022-11-17

申请号：US17868724

申请日：2022-07-19

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Jaehong JUNG ,  Juhyung SON ,  Dongcheol KIM ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/625 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  G06T9/00

Abstract: A video signal processing method may comprise the steps of: confirming a prediction mode applied to a current coding unit; confirming whether a plurality of preset conditions are satisfied on the basis of at least one of the prediction mode of the current coding unit and a size of the current coding unit; parsing a first syntax element indicating a transform kernel applied to a transform unit included in the current coding unit when the plurality of preset conditions are satisfied; determining a transform kernel applied to horizontal and vertical directions of the current transform unit on the basis of the first syntax element; and generating a residual signal of the current transform unit by performing an inverse transform on the current transform unit using the determined transform kernel.

公开(公告)号：US20220321922A1

公开(公告)日：2022-10-06

申请号：US17844330

申请日：2022-06-20

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Dongcheol KIM ,  Jaehong JUNG ,  Geonjung KO ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/82

Abstract: A video signal decoding device comprises a processor, wherein: the processor decodes a sequence parameter set (SPS) raw byte sequence payload (RBSP) syntax included in a bitstream of a video signal, and decodes the bitstream on the basis of the decoding result of the SPS RBSP syntax; the SPS RBSP syntax includes a first syntax element related to the number of one or more sub-pictures configuring one picture, and a second syntax element indicating whether to process a boundary of the one or more sub-pictures as a boundary of the one picture on the basis of the first syntax element; and the second syntax element is parsed only when the number of the one or more sub-pictures is two or more.

公开(公告)号：US20220312033A1

公开(公告)日：2022-09-29

申请号：US17596501

申请日：2020-06-10

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Dongcheol KIM ,  Geonjung KO ,  Jaehong JUNG ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/12 ,  H04N19/61

Abstract: The present disclosure relates to a method and device for processing a video signal and, more specifically, comprises the steps of: parsing, from a bitstream, block-based delta pulse code modulation (BDPCM) enable information indicating whether or not BDPCM has been enabled; when the BDPCM enable information indicates that the BDPCM has been enabled, the width of a current block is less than or equal to a first value, and the height of the current block is less than or equal to a second value, parsing, from the bitstream, intra BDPCM information indicating whether or not the BDPCM is to be applied to the current block; when the intra BDPCM information indicates that the BDPCM is to be applied to the current block, parsing, from the bitstream, intra BDPCM direction information regarding the current block; and reconstructing the current block on the basis of the intra BDPCM direction information.

公开(公告)号：US20220217366A1

公开(公告)日：2022-07-07

申请号：US17607001

申请日：2020-04-27

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Dongcheol KIM ,  Geonjung KO ,  Jaehong JUNG ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/11 ,  H04N19/70 ,  H04N19/593

Abstract: Disclosed are a video signal processing method and device for encoding or decoding a video signal. The video signal processing method and the video signal processing method may include inducing a chroma intra prediction mode applied to a current chroma block based on a luma intra prediction mode of a luma block corresponding to the current chroma block, generating a chroma prediction sample of the current chroma block based on the chroma intra prediction mode, and restoring the current chroma block based on the chroma prediction sample.

公开(公告)号：US20220210451A1

公开(公告)日：2022-06-30

申请号：US17655354

申请日：2022-03-17

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Jaehong JUNG ,  Juhyung SON ,  Dongcheol KIM ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/30 ,  H04N19/46 ,  H04N19/96 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

Abstract: The present disclosure relates to a processing method of a video signal, the processing method comprising the steps of: scaling a transform coefficient for a current block on the basis of an intermediate scaling factor array; when the flag indicates that a low frequency non-separable transform is applied to the current block, obtaining a residual for the current block by applying an inverse transform of a non-separable transform and an inverse transform of a primary transform on the scaled transform coefficient, wherein the primary transform is a transform applied to a residual signal of a spatial domain before the low frequency non-separable transform; and reconstructing the current block on the basis of the residual and a predictor of the current block.

公开(公告)号：US20210400279A1

公开(公告)日：2021-12-23

申请号：US17401849

申请日：2021-08-13

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Geonjung KO ,  Dongcheol KIM ,  Juhyung SON ,  Jaehong JUNG ,  Jinsam KWAK

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/96 ,  H04N19/70 ,  H04N19/186 ,  H04N19/176

Abstract: A video signal processing method and device for encoding or decoding a video signal are disclosed. The video signal processing method comprises the steps of: identifying a tree type of a current chroma block; deriving a chroma intra prediction mode of the current chroma block on the basis of a luma intra prediction mode at a preset position if the tree type of the current chroma block is a dual tree; generating a prediction block of the current chroma block on the basis of the chroma intra prediction mode; and restoring the current chroma block by adding a residual block of the current chroma block to a prediction block, wherein the luma intra prediction mode can be set to a preset mode if the luma prediction mode at the preset position is an intra block copy mode.

公开(公告)号：US20210321136A1

公开(公告)日：2021-10-14

申请号：US17348260

申请日：2021-06-15

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Jaehong JUNG ,  Juhyung SON ,  Dongcheol KIM ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/625 ,  H04N19/61 ,  H04N19/70 ,  H04N19/159 ,  H04N19/176

Abstract: A video signal processing method may comprise the steps of: confirming a prediction mode applied to a current coding unit; confirming whether a plurality of preset conditions are satisfied on the basis of at least one of the prediction mode of the current coding unit and a size of the current coding unit; parsing a first syntax element indicating a transform kernel applied to a transform unit included in the current coding unit when the plurality of preset conditions are satisfied; determining a transform kernel applied to horizontal and vertical directions of the current transform unit on the basis of the first syntax element; and generating a residual signal of the current transform unit by performing an inverse transform on the current transform unit using the determined transform kernel.

公开(公告)号：US20210314619A1

公开(公告)日：2021-10-07

申请号：US17348227

申请日：2021-06-15

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Jaehong JUNG ,  Dongcheol KIM ,  Juhyung SON ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/61 ,  H04N19/70 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: A video signal processing method may include: a step for determining whether a secondary inverse transform is applied to the current block; a step for deriving a secondary transform kernel set which is applied to the current block from among predefined secondary transform kernel sets on the basis of an intra prediction mode of the current block when the secondary inverse transform is applied to the current block; a step for selecting a secondary transform kernel, which is applied to the current block, in the selected secondary transform kernel set; a step for generating a secondary inverse transformed block by performing a secondary inverse transform on a specified upper-left region of the current block by using the secondary transform kernel; and a step for generating a residual block of the current block by performing a primary inverse transform on the secondary inverse transformed block.

公开(公告)号：US20210266581A1

公开(公告)日：2021-08-26

申请号：US17317629

申请日：2021-05-11

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

Inventor： Jaehong JUNG ,  Juhyung SON ,  Dongcheol KIM ,  Geonjung KO ,  Jinsam KWAK

IPC: H04N19/46 ,  H04N19/119 ,  H04N19/159 ,  H04N19/60 ,  H04N19/176

Abstract: A method for processing a video signal comprises the steps of: obtaining, from the video signal, an intra sub-partitions (ISP) mode flag indicating whether the ISP mode is applied to a current block; when the ISP mode is applied to the current block, obtaining, from the video signal, an ISP partitioning flag indicating a partitioning direction of the current block; partitioning the current block into a plurality of transform blocks on the basis of the partitioning direction; generating residual blocks of the transform blocks by performing an inverse transformation on each of the transform blocks; and restoring the current block on the basis of the residual blocks.