公开(公告)号：US20240022740A1

公开(公告)日：2024-01-18

申请号：US18363972

申请日：2023-08-02

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: H04N19/186 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

Abstract: An image encoding/decoding method and device according to the present disclosure may configure a reference sample for a cross component prediction of a chroma component block, derive a cross component prediction parameter by using the reference sample, and make a cross component prediction of the chroma component block on the basis of the cross component prediction parameter and a luma component block corresponding to the chroma component block.

公开(公告)号：US20240015306A1

公开(公告)日：2024-01-11

申请号：US18469838

申请日：2023-09-19

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176

Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method of the present invention may comprise: obtaining intra-frame prediction information of a current block from a bitstream; inducing an intra-frame prediction mode of the current block on the basis of the intra-frame prediction information; determining a reference region for intra-frame prediction of the current block; and performing intra-frame prediction of the current block on the basis of the intra-frame prediction mode and the reference region.

公开(公告)号：US20230421777A1

公开(公告)日：2023-12-28

申请号：US18462673

申请日：2023-09-07

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan Ryu

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70

CPC classification number: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70

Abstract: The present invention relates to an intra prediction scheme among video coding techniques and, more particularly, relates to a video decoding method and apparatus for diving a block into a plurality of sub-blocks when intra prediction is performed and sequentially performing infra prediction on each of the sub-blocks. The decoding method performed by a video decoding apparatus includes determining whether to perform sub-block-based intra prediction on a current coding unit, dividing the current coding unit into a plurality of sub-blocks, performing intra prediction on each of the sub-blocks when a result of determination of whether to perform sub-block-based intra prediction has a value of “true”, and directly performing block-based intra prediction on the current coding unit without dividing the current coding unit when the result of the determination has a value of “false”.

公开(公告)号：US20230164317A1

公开(公告)日：2023-05-25

申请号：US18157920

申请日：2023-01-23

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ho Chan RYU ,  Yong Jo AHN

IPC: H04N19/119 ,  H04N19/44 ,  H04N19/186 ,  H04N19/513 ,  H04N19/593 ,  H04N19/176 ,  H04N19/70 ,  H04N19/157

CPC classification number: H04N19/119 ,  H04N19/44 ,  H04N19/186 ,  H04N19/513 ,  H04N19/593 ,  H04N19/176 ,  H04N19/70 ,  H04N19/157

Abstract: The present invention relates to a block partitioning structure from among the video coding schemes and to a method and apparatus for encoding and decoding the block partitioning structure, the method comprising the steps of: acquiring block partitioning data; partitioning a block by means of the acquired block partitioning data; and encoding and decoding by means of the partitioned block. The encoding and decoding method and apparatus according to the present invention has the benefit of improving encoding efficiency with respect to the existing video compression schemes.

公开(公告)号：US20250168341A1

公开(公告)日：2025-05-22

申请号：US19028540

申请日：2025-01-17

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ho Chan RYU ,  Yong Jo AHN

IPC: H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/513 ,  H04N19/593 ,  H04N19/70

Abstract: The present invention relates to a block partitioning structure from among the video coding schemes and to a method and apparatus for encoding and decoding the block partitioning structure, the method comprising the steps of: acquiring block partitioning data; partitioning a block by means of the acquired block partitioning data; and encoding and decoding by means of the partitioned block. The encoding and decoding method and apparatus according to the present invention has the benefit of improving encoding efficiency with respect to the existing video compression schemes.

公开(公告)号：US20250113056A1

公开(公告)日：2025-04-03

申请号：US18981331

申请日：2024-12-13

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182

Abstract: A video coding/decoding method and device, according to the present invention, may enable: deriving an intra-frame prediction mode of a current block; configuring a reference pixel for the intra-frame prediction of the current block; and carrying out the intra-frame prediction of the current block on the basis of the intra-frame prediction mode and the reference pixel. The intra-frame prediction mode of the current block is derived on the basis of any one of MPM candidates or a predetermined default mode.

公开(公告)号：US20250047878A1

公开(公告)日：2025-02-06

申请号：US18925747

申请日：2024-10-24

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: H04N19/186 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

Abstract: An image encoding/decoding method and device according to the present disclosure may configure a reference sample for a cross component prediction of a chroma component block, derive a cross component prediction parameter by using the reference sample, and make a cross component prediction of the chroma component block on the basis of the cross component prediction parameter and a luma component block corresponding to the chroma component block.

公开(公告)号：US20230353757A1

公开(公告)日：2023-11-02

申请号：US18350040

申请日：2023-07-11

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN ,  Dong Gyu SIM ,  Ho Chan RYU ,  Seanae PARK ,  Byung Tae OH ,  Byung Cheol SONG

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/593 ,  H04N19/91 ,  H04N19/523 ,  H04N19/513 ,  H04N19/13 ,  H04N19/82 ,  H04N19/157 ,  H04N19/18 ,  H04N19/129 ,  H04N19/176

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/129 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/513 ,  H04N19/523 ,  H04N19/593 ,  H04N19/82 ,  H04N19/91

Abstract: A video encoding/decoding apparatus according to the present invention acquires motion vector refinement information, performs motion compensation on the basis of a motion vector of a current block, refines the motion vector of the current block using at least one or both of the motion vector refinement information and the output of the motion compensation, and performs motion compensation using the refined motion vector.

公开(公告)号：US20230345034A1

公开(公告)日：2023-10-26

申请号：US18342984

申请日：2023-06-28

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan Ryu

IPC: H04N19/51 ,  H04N19/105 ,  H04N19/176

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/176

Abstract: The present invention provides an image encoding method and an image decoding method. An image decoding method according to the present invention, for decoding an image by decoder-side motion information derivation, comprises the steps of: checking, from among a plurality of motion information derivation types, the motion information derivation type applied to the current block: and deriving motion information of the current block according to the checked motion information derivation type, wherein different motion information compensation techniques are applicable according to the motion information derivation type.

公开(公告)号：US20230079957A1

公开(公告)日：2023-03-16

申请号：US18048397

申请日：2022-10-20

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182

Abstract: A video coding/decoding method and device, according to the present invention, may enable: deriving an intra-frame prediction mode of a current block; configuring a reference pixel for the intra-frame prediction of the current block; and carrying out the intra-frame prediction of the current block on the basis of the intra-frame prediction mode and the reference pixel. The intra-frame prediction mode of the current block is derived on the basis of any one of MPM candidates or a predetermined default mode.