公开(公告)号：US12231670B2

公开(公告)日：2025-02-18

申请号：US18510069

申请日：2023-11-15

Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Joo Hee Moon ,  Dong Jae Won ,  Jae Min Ha ,  Sung Won Lim

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176

Abstract: A method and an apparatus for encoding/decoding an image according to the present invention may determine a reference area that is a pre-reconstructed area spatially adjacent to a current block on the basis of reference information for specifying the position of a reference area used for predicting a current block and may predict the current block on the basis of the reference area.

公开(公告)号：US11140396B2

公开(公告)日：2021-10-05

申请号：US16860112

申请日：2020-04-28

Applicant: Industry Academy Cooperation Foundation of Sejong University

Inventor： Joo Hee Moon ,  Dong Jae Won ,  Sung Won Lim

IPC: H04N19/14 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593

Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.

公开(公告)号：US11122265B2

公开(公告)日：2021-09-14

申请号：US17016940

申请日：2020-09-10

Applicant: Industry Academy Cooperation Foundation of Sejong University

Inventor： Joo Hee Moon ,  Sung Won Lim ,  Dong Jae Won

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/176 ,  H04N19/463 ,  H04N19/70

Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.

公开(公告)号：US11115659B2

公开(公告)日：2021-09-07

申请号：US17016867

申请日：2020-09-10

Applicant: Industry Academy Cooperation Foundation of Sejong University

Inventor： Joo Hee Moon ,  Sung Won Lim ,  Dong Jae Won

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/176 ,  H04N19/463 ,  H04N19/70

Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.

公开(公告)号：US10681353B2

公开(公告)日：2020-06-09

申请号：US16097464

申请日：2017-04-26

Applicant: Industry Academy Cooperation Foundation of Sejong University

Inventor： Joo Hee Moon ,  Dong Jae Won ,  Sung Won Lim

IPC: H04N19/25 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/14

Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.

公开(公告)号：US12238345B2

公开(公告)日：2025-02-25

申请号：US18529455

申请日：2023-12-05

Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Joo Hee Moon ,  Jae Min Ha ,  Dong Jae Won ,  Sung Won Lim

IPC: H04N19/91 ,  H04N19/132 ,  H04N19/176 ,  H04N19/60

Abstract: The present invention relates to an image encoding/decoding method and device, and the image encoding method or device according to an embodiment of the present invention may encode a position of a reference coefficient within a current transform block to be encoded, and encoding skip region information of a skip region selected on the basis of the position of the reference coefficient. The skip region information may represent whether or not coefficients within the skip region have an identical coefficient value.

公开(公告)号：US12192455B2

公开(公告)日：2025-01-07

申请号：US18455171

申请日：2023-08-24

Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Joo Hee Moon ,  Dong Jae Won ,  Sung Won Lim

IPC: G06K9/36 ,  H04N19/117 ,  H04N19/13 ,  H04N19/176 ,  H04N19/436 ,  H04N19/82

Abstract: The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.

公开(公告)号：US11902521B2

公开(公告)日：2024-02-13

申请号：US18468547

申请日：2023-09-15

Applicant: Industry Academy Cooperation Foundation of Sejong University

Inventor： Joo Hee Moon ,  Sung Won Lim ,  Dong Jae Won

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/192 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/192 ,  H04N19/96

Abstract: The present invention provides an image encoding method and an image decoding method. The image encoding method of the present invention comprises: a first dividing step of dividing a current image into a plurality of blocks; and a second dividing step of dividing, into a plurality of sub blocks, a block, which is to be divided and includes a boundary of the current image, among the plurality of blocks, wherein the second dividing step is recursively performed by setting a sub block including the boundary of the current images as the block to be divided, until the sub block including the boundary of the current image does not exist among the sub blocks.

公开(公告)号：US11665337B2

公开(公告)日：2023-05-30

申请号：US17580937

申请日：2022-01-21

Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Joo Hee Moon ,  Dong Jae Won ,  Sung Won Lim

IPC: H04N19/103 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51 ,  H04N19/117

CPC classification number: H04N19/103 ,  H04N19/117 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51

Abstract: Disclosed are an image encoding/decoding method and apparatus. The image decoding method includes decoding coding mode information of a current coding block, dividing the current coding block into at least one prediction block, and generating prediction samples of the at least one prediction block on the basis of the decoded coding mode, in which the coding mode information is information indicating any one mode among intra mode, inter mode, and hybrid mode.

公开(公告)号：US11533470B2

公开(公告)日：2022-12-20

申请号：US17158291

申请日：2021-01-26

Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Joo Hee Moon ,  Dong Jae Won ,  Sung Won Lim

IPC: H04N19/103 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51 ,  H04N19/117 ,  H04N19/119

Abstract: Disclosed are an image encoding/decoding method and apparatus. The image decoding method includes decoding coding mode information of a current coding block, dividing the current coding block into at least one prediction block, and generating prediction samples of the at least one prediction block on the basis of the decoded coding mode, in which the coding mode information is information indicating any one mode among intra mode, inter mode, and hybrid mode.