公开(公告)号：US20220264140A1

公开(公告)日：2022-08-18

申请号：US17736324

申请日：2022-05-04

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan Ryu

IPC: 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：US20210289229A1

公开(公告)日：2021-09-16

申请号：US17258066

申请日：2019-07-10

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

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

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：US20210112254A1

公开(公告)日：2021-04-15

申请号：US17044765

申请日：2019-04-03

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Yong Jo AHN

IPC: 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：US20210051334A1

公开(公告)日：2021-02-18

申请号：US16968942

申请日：2019-02-21

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan RYU

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

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：US20210006815A1

公开(公告)日：2021-01-07

申请号：US16978025

申请日：2019-03-19

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Yong Jo AHN ,  Ho Chan RYU

IPC: 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：US20190238842A1

公开(公告)日：2019-08-01

申请号：US16378494

申请日：2019-04-08

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ho Chan RYU ,  Yong Jo AHN

IPC: H04N19/11 ,  H04N19/176

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46

Abstract: The present invention relates to a method and apparatus, with respect to a block partitioning scheme from among the video compression schemes, for improving encoding/decoding efficiency by utilizing an intra prediction mode extraction method of a square or rectangular block.

公开(公告)号：US20170134743A1

公开(公告)日：2017-05-11

申请号：US15127503

申请日：2015-01-19

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Dong Gyu SIM ,  Yong Jo AHN ,  Woong LIM

IPC: H04N19/503 ,  H04N19/44 ,  H04N19/176 ,  H04N19/124

CPC classification number: H04N19/503 ,  H04N19/124 ,  H04N19/17 ,  H04N19/176 ,  H04N19/44

Abstract: An apparatus and a method for decoding an image are disclosed. More specifically, the apparatus for decoding an image, according to one embodiment of the present invention, comprises an adaptive inverse-quantization unit for performing inverse-quantization on a block to be decoded, by using scaling list information set with respect to one region including the block to be decoded within an image among the scaling list information which is separately set in each partitioned region of the image.