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公开(公告)号：US11284067B2
公开(公告)日：2022-03-22
申请号：US17072942
申请日：2020-10-16
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: H04N19/105 , H04N19/136 , H04N19/176 , H04N19/503 , H04N19/159 , H04N19/513 , H04N19/139 , H04N19/103 , H04N19/52 , H04N19/172 , H04N19/124
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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公开(公告)号：US11252424B2
公开(公告)日：2022-02-15
申请号：US16535991
申请日：2019-08-08
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 , 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：US11252411B2
公开(公告)日：2022-02-15
申请号：US16885955
申请日：2020-05-28
Inventor： Sung Chang Lim , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/126 , H04N19/159 , H04N19/61 , H04N19/196 , H04N19/70 , H04N19/50 , H04N19/463 , H04N19/176
Abstract: The present invention relates to a method for encoding and decoding a quantized matrix and an apparatus using same, the method for encoding a quantized matrix according to the present invention comprising the steps of: determining a quantization matrix to be used for quantization and quantizing; determining the prediction method used for the quantization of the quantization matrix; and encoding quantization matrix information on the basis of the determined prediction method, wherein the prediction method can be either a prediction method between coefficients in the quantization matrix or a duplicate of the quantization matrix.
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公开(公告)号：US11252407B2
公开(公告)日：2022-02-15
申请号：US16840547
申请日：2020-04-06
Inventor： Jin Ho Lee , Hui Yong Kim , Sung Chang Lim , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/11 , H04N19/107 , H04N19/44 , H04N19/176 , H04N19/184 , 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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175.发明授权公开(公告)号：US11102471B2
公开(公告)日：2021-08-24
申请号：US15897440
申请日：2018-02-15
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Se Yoon Jeong , Hui Yong Kim , Sung Chang Lim , Jin Ho Lee , Ha Hyun Lee , Jong Ho Kim , Jin Soo Choi , Jin Woong Kim , Chie Teuk Ahn , Gwang Hoon Park , Kyung Yong Kim , Han Soo Lee , Tae Ryong Kim
IPC: H04N19/10 , H04N19/105 , H04N19/136 , H04N19/196 , H04N19/61 , H04N19/46
Abstract: According to one embodiment of the present invention, a video information encoding method comprises: a step of predicting information of the current coding unit to generate prediction information; and a step of determining whether the information of the current coding unit coincides with the prediction information. If the information of the current coding unit coincides with the prediction information, a flag indicating that the information of the current coding unit coincides with the prediction information is encoded and transmitted. If the information of the current coding unit does not coincide with the prediction information, a flag indicating that the information of the current coding unit does not coincide with the prediction information is encoded and transmitted and the information of the current coding unit is encoded and transmitted. In the step of generating prediction information, the prediction information may be generated using the information on the coding unit adjacent to the current coding unit.
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Patent Agency Ranking
公开(公告)号：US20210203954A1
公开(公告)日：2021-07-01
申请号：US17198720
申请日：2021-03-11
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 , H04N19/52 , H04N19/139 , H04N19/176 , H04N19/109 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/15 , 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.
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公开(公告)号：US11006142B2
公开(公告)日：2021-05-11
申请号：US16829241
申请日：2020-03-25
Inventor： Sung Chang Lim , Hui Yong Kim , Jin Ho Lee , Jin Soo Choi , Jin Woong Kim
IPC: 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：US10958933B2
公开(公告)日：2021-03-23
申请号：US16598846
申请日：2019-10-10
Inventor： Hae-Chul Choi , Se Yoon Jeong , Sukhee Cho , Hui Yong Kim , Jinho Lee , Hahyun Lee , Sung-Chang Lim , Jongho Kim , Jin Soo Choi , Jin Woo Hong , Jin Woong Kim
IPC: H04N19/52 , H04N19/513 , H04N19/172 , H04N19/176
Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
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公开(公告)号：US10958919B2
公开(公告)日：2021-03-23
申请号：US16784714
申请日：2020-02-07
Inventor： Jung Won Kang , Ha Hyun Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/187 , H04N19/70 , H04N19/61 , H04N19/30 , H04N19/31 , H04N19/46 , H04N19/169 , H04N19/124 , H04N19/13 , H04N19/52 , H04N19/593 , H04N19/80 , H04N19/91 , H04N19/182 , H04N19/33 , H04N19/503
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：US10958918B2
公开(公告)日：2021-03-23
申请号：US16778313
申请日：2020-01-31
Inventor： Jung Won Kang , Ha Hyun Lee , Jin Soo Choi , Jin Woong Kim
IPC: H04N19/187 , H04N19/70 , H04N19/61 , H04N19/30 , H04N19/31 , H04N19/46 , H04N19/169 , H04N19/124 , H04N19/13 , H04N19/52 , H04N19/593 , H04N19/80 , H04N19/91 , H04N19/182 , H04N19/33 , H04N19/503
Abstract: The present invention relates to a decoding method for a bit stream that supports a plurality of layers. The decoding method may include receiving information on a set of video parameters that includes information on the plurality of layers, and parsing the set of video parameters to grasp information on the layers in the bit stream.
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