公开(公告)号：US12200200B2

公开(公告)日：2025-01-14

申请号：US18491003

申请日：2023-10-20

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: Disclosed is a video signal processing method and device that encodes or decodes a video signal. In particular, the video signal processing method may comprise the steps of: parsing a first syntax element indicating whether a merge mode is applied to a current block; when the merge mode is applied to the current block, determining whether to parse a second syntax element on the basis of a first predefined condition, wherein the second syntax element indicates whether a first mode or a second mode is applied to the current block; when the first mode and the second mode are not applied to the current block, determining whether to parse a third syntax element on the basis of a second predefined condition; and determining a mode applied to the current block on the basis of the second syntax element or the third syntax element.

公开(公告)号：US12101501B2

公开(公告)日：2024-09-24

申请号：US18328246

申请日：2023-06-02

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/53 ,  H04N19/513 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/53 ,  H04N19/57

Abstract: A video signal decoding device comprising a processor, wherein the processor is configured to: obtain reference samples corresponding to a first side of a current block and reference samples corresponding to a second side of the current block, obtain a direct current (DC) value for prediction of the current block based on a reference sample set comprising at least some of the reference samples corresponding to the first side and the reference samples corresponding to the second side, and reconstruct the current block based on the DC value.

公开(公告)号：US12047562B2

公开(公告)日：2024-07-23

申请号：US18065839

申请日：2022-12-14

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：US11575943B2

公开(公告)日：2023-02-07

申请号：US17844330

申请日：2022-06-20

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

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：US11563936B2

公开(公告)日：2023-01-24

申请号：US17227839

申请日：2021-04-12

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  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：US11166040B2

公开(公告)日：2021-11-02

申请号：US17113215

申请日：2020-12-07

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

Inventor： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/513 ,  H04N19/53 ,  H04N19/57

Abstract: An apparatus for decoding a video signal, the apparatus comprising a processor, wherein the processor is configured to: configure a Motion Vector Prediction (MVP) candidate list for motion compensation of a current block through one of a first method and a second method, acquire a motion vector predictor of the current block, based on the configured MVP candidate list, acquire a motion vector differential value indicating a difference between a motion vector of the current block and the motion vector predictor, modify the motion vector differential value, based on a resolution of the motion vector differential value of the current block, acquire the motion vector of the current block, based on the motion vector predictor and the modified motion vector differential value, and reconstruct the current block, based on the acquired motion vector.

公开(公告)号：US11601641B2

公开(公告)日：2023-03-07

申请号：US17227839

申请日：2021-04-12

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  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：US11570483B2

公开(公告)日：2023-01-31

申请号：US17244083

申请日：2021-04-29

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Jaehong Jung ,  Juhyung Son ,  Dongcheol Kim ,  Geonjung Ko ,  Jinsam Kwak

IPC: H04N19/70 ,  H04N19/96 ,  H04N19/176 ,  H04N19/184

Abstract: A video signal processing method comprises: obtaining, from a bitstream, a skip parameter (cu_skip_flag) indicating whether a skip mode is applied to a current block; when the skip parameter indicates that a mode is not the skip mode, obtaining, from the bitstream, a merge parameter (merge_flag) indicating whether the current block is coded with a merge mode; and determining whether a coded block flag (CBF) parameter (cu_cbf), which indicates whether a syntax element related to transform is obtained from the bitstream, is obtained, according to a value of the merge parameter, wherein, when the value of the merge parameter indicates the merge mode, the CBF parameter is not obtained from the bitstream and is determined to be a preconfigured value.

公开(公告)号：US20220174315A1

公开(公告)日：2022-06-02

申请号：US17672880

申请日：2022-02-16

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

Inventor： Geonjung KO ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/136 ,  H04N19/176

Abstract: Disclosed are a video signal processing method and apparatus for encoding or decoding a video signal. In more detail, the video signal processing method includes receiving intra prediction mode information for a current block, wherein the intra prediction mode information indicates one of a plurality of intra prediction modes configuring an intra prediction mode set; and decoding the current block based on the received intra prediction mode information, wherein the intra prediction mode set comprises a plurality of angle modes, and the plurality of angle modes comprises a basic angle mode and an extended angle mode, wherein the extended angle mode is signaled based on the basic angle mode.

公开(公告)号：US11140384B2

公开(公告)日：2021-10-05

申请号：US16907081

申请日：2020-06-19

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

Inventor： Geonjung Ko ,  Juhyung Son ,  Dongcheol Kim ,  Jaehong Jung ,  Jinsam Kwak

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed is a video signal processing method and device for encoding or decoding a video signal. More specifically, disclosed are a video signal processing method and a video signal processing device for performing the method, the method comprising: obtaining reference line information indicating a reference line for intra prediction of a current block among a plurality of reference lines comprising neighboring samples of the current block; determining, on the basis of the reference line information, an intra prediction mode for the current block among a plurality of intra prediction modes constituting an intra prediction mode set; and decoding the current block on the basis of a plurality of reference samples on the reference line according to the reference line information and the determined intra prediction mode, wherein the plurality of reference lines include a first reference line comprising neighboring samples on a line adjacent to the boundary of the current block and a second reference line comprising neighboring samples on a line spaced a distance corresponding to a predetermined number of samples apart from the boundary of the current block.