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公开(公告)号：US12231678B2
公开(公告)日：2025-02-18
申请号：US18413605
申请日：2024-01-16
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: H04N19/577 , H04N19/109 , H04N19/176 , H04N19/503 , H04N19/513 , H04N19/52 , H04N19/593 , H04N19/107 , H04N19/119 , H04N19/61 , H04N19/82
Abstract: According to the present invention, an image encoding apparatus comprises: a motion prediction unit which derives motion information on a current block in the form of the motion information including L0 motion information and L1 motion information; a motion compensation unit which performs a motion compensation for the current block on the basis of at least one of the L0 motion information and L1 motion information so as to generate a prediction block corresponding to the current block; and a restoration block generating unit which generates a restoration block corresponding to the current block based on the prediction block. According to the present invention, image encoding efficiency can be improved.
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公开(公告)号：US12206887B2
公开(公告)日：2025-01-21
申请号：US18651227
申请日：2024-04-30
Inventor： Hui Yong Kim , Jin Ho Lee , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/513 , H04N19/105 , H04N19/182 , H04N19/196 , H04N19/42 , H04N19/51 , H04N19/52 , H04N19/593 , H04N19/82
Abstract: An image decoding method according to the present invention includes reconstructing a residual block by inverse-quantizing and inverse-transforming an entropy-decoded residual block, generating a prediction block by performing intra prediction on a current block, and reconstructing an picture by adding the reconstructed residual block to the prediction block, wherein generating the prediction block includes generating a final prediction value of a prediction target pixel included in the current block based on a first prediction value of the prediction target pixel and a final correction value calculated by performing an arithmetic right shift on a two's complementary integer representation for an initial correction value of the prediction target pixel by a binary digit of 1. Accordingly, upon image encoding/decoding, computation complexity may be reduced.
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公开(公告)号：US12166976B2
公开(公告)日：2024-12-10
申请号：US18345350
申请日：2023-06-30
Inventor： Jin Ho Lee , Hui Yong Kim , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/11 , H04N19/107 , H04N19/176 , H04N19/184 , H04N19/44 , H04N19/91
Abstract: An image decoding method, according to the present invention, includes the steps of: deriving an MPM candidate mode from neighboring blocks adjacent to a target block to be decoded; generating an MPM list using the MPM candidate mode derived from the neighboring blocks; and deriving an intra prediction mode for the target block to be decoded using the generated MPM list. According to the present invention, image compression efficiency can be improved.
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公开(公告)号：US12126826B2
公开(公告)日：2024-10-22
申请号：US17903494
申请日：2022-09-06
Inventor： Sung Chang Lim , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/52
CPC classification number: H04N19/52
Abstract: A method for decoding an image according to the present invention comprises the steps of: decoding a residual block by quantizing and inverse transforming an entropy-decoded residual block; generating a prediction block via motion compensation; and decoding an image by adding the decoded residual block to the prediction block, wherein on the basis of the maximum number of motion vector candidates of the motion vector candidate list related to the prediction block, a motion vector candidate list is adjusted by adding a particular motion vector candidate or by discarding a portion from among the motion vector candidates, and in the prediction block generation step, a prediction motion vector of the prediction block is determined on the basis of the adjusted motion vector candidate list. Accordingly, the complexity of arithmetic operations is reduced during encoding/decoding of an image.
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公开(公告)号：US12075090B2
公开(公告)日：2024-08-27
申请号：US18164097
申请日：2023-02-03
Inventor： Jin Ho Lee , Hui Yong Kim , Se Yoon Jeong , Suk Hee Cho , Ha Hyun Lee , Jong Ho Kim , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn
IPC: H04N19/117 , H04N19/105 , H04N19/136 , H04N19/157 , H04N19/176 , H04N19/44 , H04N19/593 , H04N19/82 , H04N19/147 , H04N19/182
CPC classification number: H04N19/593 , H04N19/105 , H04N19/117 , H04N19/136 , H04N19/157 , H04N19/176 , H04N19/44 , H04N19/82 , H04N19/147 , H04N19/182
Abstract: Provided is a method and apparatus for performing intra-prediction using an adaptive filter. The method for performing intra-prediction includes the steps of: determining whether or not to apply a first filter for a reference pixel value on the basis of information of a neighboring block of a current block; applying the first filter for the reference pixel value when it is determined to apply the first filter; performing intra-prediction on the current block on the basis of the reference pixel value; determining whether or not to apply a second filter for a prediction value according to each prediction mode of the current block, which is predicted by the intra-prediction performance on the basis of the information of the neighboring block; and applying the second filter for the prediction value according to each prediction mode of the current block when it is determined to apply the second filter.
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Patent Agency Ranking
公开(公告)号：US20240155140A1
公开(公告)日：2024-05-09
申请号：US18417415
申请日：2024-01-19
Inventor： Jung Won Kang , Ha Hyun Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/187 , H04N19/124 , H04N19/13 , H04N19/169 , H04N19/182 , H04N19/30 , H04N19/31 , H04N19/46 , H04N19/52 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/91
CPC classification number: H04N19/187 , H04N19/124 , H04N19/13 , H04N19/182 , H04N19/188 , H04N19/30 , H04N19/31 , H04N19/46 , H04N19/52 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/91 , H04N19/33
Abstract: The present invention relates to an image information decoding method. The decoding method includes receiving a bit stream including a Network Abstraction Layer (NAL) unit that includes information related to encoded image, and parsing a NAL unit header of the NAL unit. The NAL unit header may not include 1 bit flag information that represents whether a picture is a non-reference picture or a reference picture in the entire bit stream during encoding.
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公开(公告)号：US11962766B2
公开(公告)日：2024-04-16
申请号：US17226310
申请日：2021-04-09
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: H04N19/12 , H04N19/11 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/61 , H04N19/96
CPC classification number: H04N19/11 , H04N19/12 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/61 , H04N19/96
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：US11917193B2
公开(公告)日：2024-02-27
申请号：US16781438
申请日：2020-02-04
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: H04N19/577 , H04N19/503 , H04N19/176 , H04N19/513 , H04N19/593 , H04N19/109 , H04N19/52 , H04N19/119 , H04N19/61 , H04N19/107 , H04N19/82
CPC classification number: H04N19/577 , H04N19/109 , H04N19/176 , H04N19/503 , H04N19/513 , H04N19/52 , H04N19/593 , H04N19/107 , H04N19/119 , H04N19/61 , H04N19/82
Abstract: According to the present invention, an image encoding apparatus comprises: a motion prediction unit which derives motion information on a current block in the form of the motion information including L0 motion information and L1 motion information; a motion compensation unit which performs a motion compensation for the current block on the basis of at least one of the L0 motion information and L1 motion information so as to generate a prediction block corresponding to the current block; and a restoration block generating unit which generates a restoration block corresponding to the current block based on the prediction block. According to the present invention, image encoding efficiency can be improved.
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公开(公告)号：US11871204B2
公开(公告)日：2024-01-09
申请号：US17877696
申请日：2022-07-29
Inventor： Yong Ju Lee , Jeong Il Seo , Seung Kwon Beack , Kyeong Ok Kang , Jin Woong Kim , Jae Hyoun Yoo
IPC: H04S3/00 , G10L19/008
CPC classification number: H04S3/008 , G10L19/008 , H04S2400/01
Abstract: Disclosed is an apparatus and method for processing a multichannel audio signal. A multichannel audio signal processing method may include: generating an N-channel audio signal of N channels by down-mixing an M-channel audio signal of M channels; and generating a stereo audio signal by performing binaural rendering of the N-channel audio signal.
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公开(公告)号：US11843769B2
公开(公告)日：2023-12-12
申请号：US17591089
申请日：2022-02-02
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 , H04N19/136 , H04N19/176 , H04N19/503 , H04N19/159 , H04N19/513 , H04N19/139 , H04N19/103 , H04N19/52 , H04N19/172 , H04N19/124
CPC classification number: 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.
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