公开(公告)号：US09635363B2

公开(公告)日：2017-04-25

申请号：US15255261

申请日：2016-09-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hui Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim

IPC: G06K9/36 ,  H04N19/119 ,  H04N19/122 ,  H04N19/129 ,  H04N19/593 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/129 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70

Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.

公开(公告)号：US09432697B2

公开(公告)日：2016-08-30

申请号：US15049854

申请日：2016-02-22

Applicant: Electronics and Telecommunications Research Institute ,  Kwangwoon University Industry-Academic Collaboration Foundation ,  University-Industry Cooperation Group of Kyung Hee University ,  Korea Advanced Institute of Science and Technology

Inventor： Sung-Chang Lim ,  Ha Hyun Lee ,  Hui Yong Kim ,  Se Yoon Jeong ,  Suk Hee Cho ,  Hae Chul Choi ,  Jong Ho Kim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woo Hong ,  Dong Gyu Sim ,  Seoung Jun Oh ,  Gwang Hoon Park ,  Mun Churl Kim ,  Neung Joo Hwang ,  Sea Nae Park

IPC: H04N7/26 ,  H04N19/625 ,  H04N19/50 ,  H04N19/124 ,  H04N19/176 ,  H04N19/60 ,  H04N19/12 ,  H04N19/14 ,  H04N19/18 ,  H04N19/182 ,  H04N19/107 ,  H04N19/11 ,  H04N19/119 ,  H04N19/122 ,  H04N19/13 ,  H04N19/139 ,  H04N19/159 ,  H04N19/44 ,  H04N19/52 ,  H04N19/55 ,  H04N19/593 ,  H04N19/615 ,  H04N19/91

CPC classification number: H04N19/122 ,  H04N19/107 ,  H04N19/11 ,  H04N19/119 ,  H04N19/12 ,  H04N19/124 ,  H04N19/13 ,  H04N19/139 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/44 ,  H04N19/50 ,  H04N19/52 ,  H04N19/55 ,  H04N19/593 ,  H04N19/60 ,  H04N19/615 ,  H04N19/625 ,  H04N19/91

Abstract: Provided is a video encoding apparatus, including a signal separator to separate a differential image block into a first domain and a second domain, based on a boundary line included in the differential image block, the differential image block indicating a difference between an original image and a prediction image with respect to the original image, a transform encoder to perform a transform encoding with respect to the first domain using a discrete cosine transform (DCT), a quantization unit to quantize an output of the transform encoding unit in a frequency domain, a space domain quantization unit to quantize the second domain in a space domain, and an entropy encoder to perform an entropy encoding using outputs of the quantization unit and the space domain quantization unit.

公开(公告)号：US09332282B2

公开(公告)日：2016-05-03

申请号：US14469309

申请日：2014-08-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KWANGWOON UNIVERSITY INDUSTRY—ACADEMIC COLLABORATION FOUNDATION ,  UNIVERSITY—INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hae Chul Choi ,  Se Yoon Jeong ,  Sung-Chang Lim ,  Jin Soo Choi ,  Jin Woo Hong ,  Dong Gyu Sim ,  Seoung-Jun Oh ,  Chang-Beom Ahn ,  Gwang Hoon Park ,  Seung Ryong Kook ,  Sea-Nae Park ,  Kwang-Su Jeong

IPC: G06K9/36 ,  H04N19/91 ,  H04N19/50 ,  H04N19/70 ,  H04N19/61 ,  H04N19/593 ,  H04N19/11 ,  H04N19/132 ,  H04N19/587 ,  H04N19/124 ,  H04N19/44 ,  H04N19/625

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/43 ,  H04N19/44 ,  H04N19/50 ,  H04N19/51 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61 ,  H04N19/615 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91

Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.

公开(公告)号：US12212740B2

公开(公告)日：2025-01-28

申请号：US18498625

申请日：2023-10-31

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Hui Yong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Sang Min Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/105 ,  H04N19/103 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/503 ,  H04N19/513 ,  H04N19/52 ,  H04N19/124 ,  H04N19/172

Abstract: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.

公开(公告)号：US12177443B2

公开(公告)日：2024-12-24

申请号：US18160981

申请日：2023-01-27

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hui Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim

IPC: H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70

Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.

公开(公告)号：US12166974B2

公开(公告)日：2024-12-10

申请号：US17602690

申请日：2020-04-10

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim ,  Gwang Hoon Park ,  Tae Hyun Kim ,  Dae Young Lee ,  Woo Woen Gwun ,  Won Jun Lee

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184

Abstract: An image encoding/decoding method and apparatus is provided. The method of decoding an image includes decoding at least one of prediction mode information of a neighbor block of a current block and length information of the current block, deriving an intra prediction mode of the current block into a predetermined mode using the decoded information, and reconstructing the current block based on the intra prediction mode of the current block.

公开(公告)号：US12126815B2

公开(公告)日：2024-10-22

申请号：US18300282

申请日：2023-04-13

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Hui Yong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/139 ,  H04N19/15 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/139 ,  H04N19/15 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

Abstract: An inter-prediction method according to the present invention comprises the steps of: deriving motion information of a current block; and generating a prediction block for the current block on the basis of the derived motion information. According to the present invention, computational complexity can be reduced and encoding efficiency can be improved.

公开(公告)号：US12069247B2

公开(公告)日：2024-08-20

申请号：US18110702

申请日：2023-02-16

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim ,  Gwang Hoon Park ,  Tae Hyun Kim ,  Dae Young Lee

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51

Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may comprise deriving a candidate list for inter-prediction of a current block, deriving motion information of the current block by using the candidate list, deriving a cumulative coding information candidate by using the motion information of the current block, inserting the derived cumulative coding information candidate into a cumulative coding information candidate list and updating the candidate list by using the cumulative coding information candidate list, wherein the updated candidate list is used for inter-prediction of a block to be decoded after the current block.

公开(公告)号：US12041226B2

公开(公告)日：2024-07-16

申请号：US18358871

申请日：2023-07-25

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Dong San Jun ,  Hui Yong Kim ,  Gwang Hoon Park ,  Jin Soo Choi ,  Tae Hyun Kim ,  Dae Young Lee ,  Young Su Heo

IPC: H04N19/105 ,  G06T3/02 ,  G06T5/50 ,  G06T5/80 ,  G06T7/246 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/174

CPC classification number: H04N19/105 ,  G06T5/50 ,  G06T5/80 ,  G06T7/248 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/521 ,  G06T3/02 ,  H04N19/174

Abstract: The present invention relates to a method and apparatus for video encoding/decoding by using a geometric modified picture. The encoding method according to the present invention includes: generating a geometric modified picture by geometrically modifying a reference picture; and generating a first prediction block of a current block by performing inter prediction referencing the geometric modified picture.

公开(公告)号：US12010312B2

公开(公告)日：2024-06-11

申请号：US18160976

申请日：2023-01-27

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Hui Yong Kim ,  Sung Chang Lim ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim ,  Gwang Hoon Park ,  Kyung Yong Kim

IPC: H04N19/129 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70

CPC classification number: H04N19/129 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70

Abstract: A method and a device for encoding/decoding images are disclosed. The method for encoding images comprises the steps of: deriving a scan type of a residual signal for a current block according to whether or not the current block is a transform skip block; and applying the scan type to the residual signal for the current block, wherein the transform skip block is a block to which transform for the current block is not applied and is specified on the basis of information indicating whether or not transform for the current block is to be applied.