公开(公告)号：US20240373036A1

公开(公告)日：2024-11-07

申请号：US18574310

申请日：2022-06-28

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungyong KIM ,  Dongcheol KIM ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/176 ,  H04N19/196 ,  H04N19/52 ,  H04N19/70

Abstract: A video signal processing method comprises the steps of: parsing a first syntax element indicating whether to activate a DIMD mode, wherein the first syntax element is signaled on a sequence parameter set (SPS) raw byte sequence payload (RBSP) syntax; when the first syntax element indicates activation of the DIMD mode, parsing a second syntax element indicating whether the DIMD mode is applied to a current block; and when the second syntax element indicates that the DIMD mode is applied to the current block, reconstructing the current block on the basis of the DIMD mode.

公开(公告)号：US20210392365A1

公开(公告)日：2021-12-16

申请号：US17460117

申请日：2021-08-27

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: 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：US20210289197A1

公开(公告)日：2021-09-16

申请号：US17333887

申请日：2021-05-28

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

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

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/46 ,  H04N19/82 ,  H04N19/176

Abstract: A video signal processing method comprises: a step for deriving an intra prediction mode of a current block; a step for constructing a reference sample around the current block; a step for generating a prediction sample of the current block by using the reference sample on the basis of the intra prediction mode; and a step for restoring the current block on the basis of the prediction sample. The step for generating the prediction sample may comprise: a step for setting a filter flag value which specifies a filter coefficient of an interpolation filter applied to the reference sample on the basis of the width and height of the current block; and a step for performing filtering on the reference sample by using the interpolation filter having the filter coefficient specified by the filter flag.

公开(公告)号：US20210266583A1

公开(公告)日：2021-08-26

申请号：US17314373

申请日：2021-05-07

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

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

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: Disclosed is a video signal processing method comprising the steps of: acquiring a merge index which indicates a candidate for prediction of a current block among a plurality of candidates for the prediction of the current block, which are included in a merge candidate list; acquiring motion information of the current block on the basis of motion information corresponding to the candidate indicated by the merge index; when the motion information of the current block includes a plurality of motion vectors corresponding to a list of different reference pictures, comparing picture order count (POC) differences between each of the reference pictures corresponding to the plurality of motion vectors and the current picture including the current block; correcting the plurality of motion vectors on the basis of a result of the comparison; and reconstructing the current block on the basis of the plurality of corrected motion vectors.

公开(公告)号：US20210250622A1

公开(公告)日：2021-08-12

申请号：US17244083

申请日：2021-04-29

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

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

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

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：US20250039371A1

公开(公告)日：2025-01-30

申请号：US18687097

申请日：2022-08-29

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

Inventor： Kyungyong KIM ,  Dongcheol KIM ,  Juhyung SON ,  Jinsam KWAK

IPC: H04N19/119 ,  H04N19/137 ,  H04N19/176 ,  H04N19/196 ,  H04N19/513 ,  H04N19/70

Abstract: A video signal decoding apparatus comprises a processor, wherein the processor: obtains first motion information for the current block; obtains second motion information for the current block; configures a first template set including adjacent blocks of the current block; obtain a first cost value by comparing the first template set with a second template set including adjacent blocks of a first reference block corresponding to the first motion information; obtains a second cost value by comparing the first template with a third template set including adjacent blocks of a second reference block corresponding to the second motion information; configures motion information corresponding to a smaller cost value from among the first cost value and the second cost value as final motion information; and generates a prediction block for the current block on the basis of the final motion information.

公开(公告)号：US20240323432A1

公开(公告)日：2024-09-26

申请号：US18732485

申请日：2024-06-03

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

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

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

CPC classification number: H04N19/593 ,  H04N19/12 ,  H04N19/176 ,  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：US20220385893A1

公开(公告)日：2022-12-01

申请号：US17885506

申请日：2022-08-10

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

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

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

Abstract: A video signal processing device comprises a processor configured to: obtain an index of intra prediction mode of a current block, obtain a reference sample line index for the current block, and generate a plurality of reference samples and a plurality of additional reference samples based on a direction of the intra prediction mode. The direction of the intra prediction mode is determined based on the index, and a number of the plurality of additional reference samples determined based on the reference sample line index and/or a ratio of a width of the current block and a height of the current block.

公开(公告)号：US20220368924A1

公开(公告)日：2022-11-17

申请号：US17875411

申请日：2022-07-28

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

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

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593

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.

公开(公告)号：US20220303567A1

公开(公告)日：2022-09-22

申请号：US17750300

申请日：2022-05-21

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 ,  H04N19/70 ,  H04N19/96 ,  H04N19/186 ,  H04N19/176

Abstract: A method for processing a video signal, the method comprising: acquiring a transform skip active flag indicating whether a transform skip flag can exist in a transform unit syntax, the transform skip flag indicating whether a transform skip is applied to a transform block included in a current block; acquiring a palette active flag indicating whether a palette mode is applied; when the transform skip active flag indicates existence of the transform skip flag in the transform unit syntax or the palette active flag indicates application of the palette mode, acquiring information related to a minimum quantization parameter which is allowed in a transform skip mode; acquiring the minimum quantization parameter on the basis of the information related to the minimum quantization parameter; correcting a quantization parameter on the basis of the acquired minimum quantization parameter; and reconstructing the current block on the basis of the corrected quantization parameter.