公开(公告)号：US12010299B2

公开(公告)日：2024-06-11

申请号：US17418583

申请日：2019-12-27

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Bae Keun Lee ,  Dong San Jun

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

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

Abstract: The video encoding/decoding method and device according to the present invention can determine an intra prediction mode of a chroma block, specify a luminance area for inter-component reference of the chroma block, downsample the specified luminance area, derive parameters for the inter-component reference of the chroma block, apply the parameters to the downsampled luminance area, and thereby predict the chroma block.

公开(公告)号：US11909961B2

公开(公告)日：2024-02-20

申请号：US16766611

申请日：2018-11-22

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Hyun Suk Ko ,  Jin Ho Lee ,  Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Dong San Jun ,  Hui Yong Kim

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

Abstract: In performing image encoding/decoding, decoding of an image is performed by deriving an intra prediction mode for a current block, decoding at least one original sample that is present in a rightmost column and a bottommost row (a bottom row) of the current block, constructing a reference sample by using the at least one decoded original sample and performing intra prediction on the current block by using the constructed reference sample.

公开(公告)号：US12155843B2

公开(公告)日：2024-11-26

申请号：US18358844

申请日：2023-07-25

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Dong San Jun ,  Sung Chang Lim ,  Jung Won Kang ,  Hyun Suk Ko ,  Jin Ho Lee ,  Ha Hyun Lee ,  Hui Yong Kim

IPC: H04N19/00 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus for performing template matching-based intra prediction are provided. An image decoding method may comprise deriving a first intra-prediction mode for a current block, generating a first intra-prediction block corresponding to the first intra-prediction mode, deriving a second intra-prediction mode for the current block, generating a second intra-prediction block corresponding to the second intra-prediction mode, and generating a final intra-prediction block by using a weighted sum of the first intra-prediction block and the second intra-prediction block.

公开(公告)号：US12081741B2

公开(公告)日：2024-09-03

申请号：US18346735

申请日：2023-07-03

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Dong San Jun ,  Ha Hyun Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/86 ,  H04N19/91

CPC classification number: H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/86 ,  H04N19/91

Abstract: An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.

公开(公告)号：US11812031B2

公开(公告)日：2023-11-07

申请号：US17418540

申请日：2019-12-27

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Bae Keun Lee ,  Dong San Jun

IPC: H04N7/12 ,  H04N19/139 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513

CPC classification number: H04N19/139 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513

Abstract: The image encoding/decoding method and device according to the present invention can construct a merge candidate list of a current block, derive motion information of the current block on the basis of the merge candidate list and a merge index of the current block, derive a motion vector difference of the current block, correct a motion vector of the current block by means of the motion vector difference, and carry out motion compensation on the current block by means of the corrected motion vector.