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111.发明公开公开(公告)号：US20240073448A1
公开(公告)日：2024-02-29
申请号：US18386181
申请日：2023-11-01
Inventor： Ha Hyun LEE , Jung Won KANG , Sung Chang LIM , Jin Ho LEE , Hui Yong KIM
IPC: H04N19/577 , H04N19/105 , H04N19/159 , H04N19/176
CPC classification number: H04N19/577 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Disclosed herein is a method of decoding an image including determining whether a current block is in a bi-directional optical flow (BIO) mode, calculating gradient information of prediction samples of the current block when the current block is in the BIO mode, and generating a prediction block of the current block using the calculated gradient information, wherein the calculating of the gradient information of the prediction samples of the current block includes calculating the gradient information using at least one neighbor sample adjacent to the prediction samples.
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112.发明公开公开(公告)号：US20240064295A1
公开(公告)日：2024-02-22
申请号：US18495579
申请日：2023-10-26
Applicant: Electronics and Telecommunications Research Institute , INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Inventor： Jin Ho LEE , Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Hui Yong KIM , Jae Gon KIM , Ji Hoon DO , Yong Uk YOON , Do Hyeon PARK , Yung Lyul LEE
IPC: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/593 , H04N19/186
CPC classification number: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/593 , H04N19/186 , H04N19/96
Abstract: There is provided an image encoding/decoding method and apparatus. An image decoding method according to the present invention may comprise reconstructing a most frequent mode (MFM) indicator indicating whether or not an intra prediction mode of a current block is a predetermined intra prediction mode, deriving, on the basis of the MFM indicator, the intra prediction mode of the current block, and generating a prediction block of the current block by performing intra prediction on the current block on the basis of the intra prediction mode.
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公开(公告)号：US20240022747A1
公开(公告)日：2024-01-18
申请号：US18475817
申请日：2023-09-27
Inventor： Sung Chang LIM , Hui Yong KIM , Se Yoon JEONG , Suk Hee CHO , Jong Ho KIM , Ha Hyun LEE , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM , Chie Teuk AHN
IPC: H04N19/44 , H04N19/52 , H04N19/503 , H04N19/50
CPC classification number: H04N19/44 , H04N19/52 , H04N19/503 , H04N19/50 , H04N19/597
Abstract: An inter prediction method according to the present invention comprises the steps of: selecting candidate units from among reconstructed neighbor units; creating a candidate unit set with respect to units to be decoded, using the selected candidate units; determining a reference unit from among the candidate units which constitute the created candidate unit set; and performing inter prediction on the units to be decoded, using the determined reference unit. According to the present invention, image encoding/decoding efficiency can be improved.
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公开(公告)号：US20230421778A1
公开(公告)日：2023-12-28
申请号：US18463848
申请日：2023-09-08
Inventor： Dong San JUN , Jin Ho LEE , Jung Won KANG , Hyun Suk KO , Sung Chang LIM , Ha Hyun LEE , Seung Hyun CHO , Hui Yong KIM , Jin Soo CHOI
IPC: H04N19/159 , H04N19/105 , H04N19/593 , H04N19/13 , H04N19/126 , H04N19/176 , H04N19/50
CPC classification number: H04N19/159 , H04N19/105 , H04N19/593 , H04N19/13 , H04N19/126 , H04N19/176 , H04N19/50
Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.
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公开(公告)号：US20230370585A1
公开(公告)日：2023-11-16
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 , H04N19/159 , H04N19/137 , H04N19/172 , G06T5/00 , G06T7/246 , H04N19/51 , G06T5/50 , H04N19/176 , H04N19/139 , H04N19/513 , H04N19/174 , G06T3/00
CPC classification number: H04N19/105 , H04N19/159 , H04N19/137 , H04N19/172 , G06T5/006 , G06T7/248 , H04N19/51 , G06T5/50 , H04N19/176 , H04N19/139 , H04N19/521 , H04N19/174 , G06T3/0006
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.
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Patent Agency Ranking
116.发明公开公开(公告)号：US20230362369A1
公开(公告)日：2023-11-09
申请号：US18353731
申请日：2023-07-17
Inventor： Jung Won KANG , Ha Hyun LEE , Sung Chang LIM , Jin Ho LEE , Hui Yong KIM
IPC: H04N19/174 , H04N19/119 , H04N19/172
CPC classification number: H04N19/119 , H04N19/172 , H04N19/174
Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise deriving slice mode information on a slice included in a current picture, deriving slice identification information on the basis of the slice mode information, and decoding the slice on the basis of the slice identification information.
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公开(公告)号：US20230336779A1
公开(公告)日：2023-10-19
申请号：US18340762
申请日：2023-06-23
Inventor： Jin Ho LEE , Hui Yong KIM , Sung Chang LIM , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/593 , H04N19/117 , H04N19/157 , H04N19/182 , H04N19/105 , H04N19/159 , H04N19/11 , H04N19/122 , H04N19/137 , H04N19/82 , H04N19/44 , H04N19/136 , H04N19/80
CPC classification number: H04N19/593 , H04N19/117 , H04N19/157 , H04N19/182 , H04N19/105 , H04N19/159 , H04N19/11 , H04N19/122 , H04N19/137 , H04N19/82 , H04N19/44 , H04N19/136 , H04N19/80 , H04N19/176
Abstract: According to the present invention, an image encoding/decoding method comprises the steps of: performing an intra prediction on a current block so as to generate a prediction block; performing filtering on a filtering target pixel in the prediction block on the basis of the intra prediction mode of the current block so as to generate a final prediction block; and generating a reconstructed block on the basis of a reconstructed differential block corresponding to the current block and on the final prediction block. According to the present invention, image encoding/decoding efficiency can be improved.
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118.发明公开公开(公告)号：US20230328250A1
公开(公告)日：2023-10-12
申请号：US18322742
申请日：2023-05-24
Inventor： Dae Yeon KIM , Sung Chang LIM , Jung Won KANG , Ha Hyun LEE , Jin Ho LEE , Hui Yong KIM
IPC: H04N19/13 , H04N19/176 , H04N19/124 , H04N19/70 , H04N19/103
CPC classification number: H04N19/13 , H04N19/103 , H04N19/124 , H04N19/176 , H04N19/70
Abstract: According to an embodiment of the present invention, there is provided an image decoding method including: obtaining an arithmetic-coded symbol stream from an image stream; identifying a symbol segment from the symbol stream according to symbol segment information signaled from an encoding apparatus; selecting an arithmetic decoding process corresponding to the symbol segment; and collectively processing one or more symbols among multiple symbols included in the symbol segment, in association with the selected arithmetic decoding process.
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公开(公告)号：US20230247194A1
公开(公告)日：2023-08-03
申请号：US18191297
申请日：2023-03-28
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: H04N19/11 , H04N19/176 , H04N19/129 , H04N19/186 , H04N19/159 , H04N19/12 , H04N19/18
CPC classification number: H04N19/11 , H04N19/12 , H04N19/18 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/61
Abstract: The present invention relates to an encoding method and decoding method, and a device using the same. The encoding method according to the present invention comprises the steps of: specifying an intra prediction mode for a current block; and scanning a residual signal by intra prediction of the current block, wherein the step of scanning the residual signal can determine a scanning type for a luminance signal and a chroma signal of the current block according to an intra prediction mode for a luminance sample of the current block.
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公开(公告)号：US20230199200A1
公开(公告)日：2023-06-22
申请号：US18108342
申请日：2023-02-10
Inventor： Sung Chang LIM , Hui Yong KIM , Se Yoon JEOONG , Jong Ho KIM , Ha Hyun LEE , Jin Ho LEE , Jin Soo CHOI , Jin Woong KIM
IPC: H04N19/176 , H04N19/129 , H04N19/136
CPC classification number: H04N19/176 , H04N19/129 , H04N19/136
Abstract: Provided is a transform coefficient scan method including: determining a reference transform block for a decoding target block; deriving a scanning map of the decoding target block using scanning information of the reference transform block; and performing inverse scanning on a transform coefficient of the decoding target block using the derived scanning map. According to the present invention, picture encoding/decoding efficiency may be improved.
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