公开(公告)号：US12155842B2

公开(公告)日：2024-11-26

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: H04N19/105 ,  H04N19/129 ,  H04N19/13 ,  H04N19/157 ,  H04N19/159 ,  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：US12041244B2

公开(公告)日：2024-07-16

申请号：US18098453

申请日：2023-01-18

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.

公开(公告)号：US20240015335A1

公开(公告)日：2024-01-11

申请号：US18470976

申请日：2023-09-20

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Ho Chan Ryu ,  Yong Jo Ahn

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/119 ,  H04N19/88 ,  H04N19/46 ,  H04N19/44 ,  H04N19/134 ,  H04N19/169 ,  H04N19/96

CPC classification number: H04N19/70 ,  H04N19/176 ,  H04N19/119 ,  H04N19/88 ,  H04N19/46 ,  H04N19/44 ,  H04N19/134 ,  H04N19/169 ,  H04N19/96

Abstract: The present invention relates to a block partitioning structure from among the video coding schemes, and a method and apparatus for encoding and decoding the block partitioning structure. The video encoding and decoding method comprises the steps of: combining two or more encoding units of maximum size into a single encoding unit group; acquiring encoding data corresponding to the combined single encoding unit group; and decoding, according to a decoding order, the two or more encoding units of maximum size contained in the single encoding unit group.

公开(公告)号：US20230362365A1

公开(公告)日：2023-11-09

申请号：US18351775

申请日：2023-07-13

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Dong Gyu SIM ,  Ho Chan Ryu ,  Yong Jo Ahn

IPC: H04N19/11 ,  H04N19/615 ,  H04N19/13 ,  H04N19/124 ,  H04N19/91 ,  H04N19/593 ,  H04N19/105 ,  H04N19/107 ,  H04N19/635 ,  H04N19/82 ,  H04N19/513 ,  H04N19/176 ,  H04N19/117

CPC classification number: H04N19/11 ,  H04N19/615 ,  H04N19/13 ,  H04N19/124 ,  H04N19/91 ,  H04N19/593 ,  H04N19/105 ,  H04N19/107 ,  H04N19/635 ,  H04N19/82 ,  H04N19/513 ,  H04N19/176 ,  H04N19/117

Abstract: A device for encoding/decoding the image according to the present invention includes an intra prediction module configured to: determine an intra prediction mode of a current block; determine a scanning order of multiple sub blocks in the current block on the basis of the determined intra prediction mode; and perform intra prediction of the current block on the basis of the determined scanning order.

公开(公告)号：US11785227B2

公开(公告)日：2023-10-10

申请号：US17570727

申请日：2022-01-07

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：US11758159B2

公开(公告)日：2023-09-12

申请号：US17052953

申请日：2019-05-13

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：US11677970B2

公开(公告)日：2023-06-13

申请号：US17256295

申请日：2019-07-01

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo Ahn

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/513

Abstract: A video coding method and device, according to the present invention, determine whether motion compensation is performed by sub-block unit, determine a search area for motion compensation of a current block, calculate a plurality of SAD candidates with respect to the search area, derive delta motion information of the current block on the basis of the plurality of SAD candidates, and can compensate for motion information of the current block by using pre-generated motion information and the delta motion information of the current block.

公开(公告)号：US11509932B2

公开(公告)日：2022-11-22

申请号：US17258066

申请日：2019-07-10

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.

公开(公告)号：US11259030B2

公开(公告)日：2022-02-22

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 ,  H04N19/119 ,  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：US11070800B2

公开(公告)日：2021-07-20

申请号：US16395109

申请日：2019-04-25

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ho Chan Ryu ,  Yong Jo Ahn

IPC: H04N19/119 ,  H04N19/176 ,  H04N7/12 ,  H04N19/66 ,  H04N19/46

Abstract: The present invention relates to a block partitioning structure in video coding technology, and a video encoding and decoding method and apparatus using the same, wherein the video encoding and decoding method includes the steps of: acquiring quad-partitioning information of a block; acquiring bi-partitioning information of the block when the acquired quad-partitioning information of the block does not indicate four partitions; acquiring partitioning direction information for bi-partitioning of the block when the acquired bi-partitioning information of the block indicates two partitions; acquiring information on whether to perform any other type of partitioning, when the acquired bi-partitioning information of the block does not indicate two partitions; and acquiring additional information required for the any other type of partitioning, when the acquired information on whether to perform any other type of partitioning indicates that the any other type of partitioning is performed.