公开(公告)号：US20210243457A1

公开(公告)日：2021-08-05

申请号：US17052953

申请日：2019-05-13

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

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

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：US20210168398A1

公开(公告)日：2021-06-03

申请号：US17257052

申请日：2019-07-02

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/159 ,  H04N19/126

Abstract: In a video encoding/decoding method and device according to the present invention, a merge candidate of a current block may be determined, a merge candidate list may be configured on the basis of the merge candidate, motion information of the current block may be derived from the merge candidate list, and the motion information may be used to perform inter prediction of the current block.

公开(公告)号：US20210067786A1

公开(公告)日：2021-03-04

申请号：US16957933

申请日：2018-12-28

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  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：US20200351511A1

公开(公告)日：2020-11-05

申请号：US16962730

申请日：2019-01-15

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: H04N19/44 ,  H04N19/60 ,  H04N19/136 ,  H04N19/184

Abstract: The present invention relates to a method and a device for decoding an image, which improve encoding and decoding efficiency by performing various forms of transform and inverse transform during transform and inverse transform processes of a video coding technique.

公开(公告)号：US20190238847A1

公开(公告)日：2019-08-01

申请号：US16378492

申请日：2019-04-08

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ho Chan RYU ,  Yong Jo AHN

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

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/46 ,  H04N19/513 ,  H04N19/593

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：US20250047868A1

公开(公告)日：2025-02-06

申请号：US18918304

申请日：2024-10-17

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: 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：US20240414368A1

公开(公告)日：2024-12-12

申请号：US18804950

申请日：2024-08-14

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: H04N19/577 ,  H04N19/124 ,  H04N19/593 ,  H04N19/61 ,  H04N19/82 ,  H04N19/91 ,  H04N19/96

Abstract: The present invention relates to block merging according to block split among video coding techniques, and a method and an apparatus for coding and decoding a video, in which in generating and modifying a block merging list, spatial merging candidate blocks of the block merging list are changed according to a split type and order of a current coding unit.

公开(公告)号：US20240340409A1

公开(公告)日：2024-10-10

申请号：US18749181

申请日：2024-06-20

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN ,  Jong Seok LEE

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176

Abstract: An image encoding/decoding method and device according to the present invention may comprise: acquiring information for matrix-based prediction of a current block; and generating a prediction block of the current block on the basis of the information for the matrix-based prediction.

公开(公告)号：US20240333955A1

公开(公告)日：2024-10-03

申请号：US18743832

申请日：2024-06-14

Applicant: INTELLECTUAL DISCOVERY CO, LTD.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: H04N19/44 ,  H04N19/136 ,  H04N19/184 ,  H04N19/60

CPC classification number: H04N19/44 ,  H04N19/136 ,  H04N19/184 ,  H04N19/45 ,  H04N19/60

Abstract: The present invention relates to a method and a device for decoding an image, which improve encoding and decoding efficiency by performing various forms of transform and inverse transform during transform and inverse transform processes of a video coding technique.

公开(公告)号：US20240323402A1

公开(公告)日：2024-09-26

申请号：US18734677

申请日：2024-06-05

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/96

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/96

Abstract: In an image encoding/decoding method and device according to the present invention, a candidate list for motion information prediction of a current block is generated, a control point vector of the current block is derived on the basis of the candidate list and a candidate index, a motion vector of the current block is derived on the basis of the control point vector of the current block, and inter-prediction with respect to the current block can be performed by means of the motion vector.