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公开(公告)号：EP4192011A1
公开(公告)日：2023-06-07
申请号：EP23152655.9
申请日：2011-04-05
发明人： CHOI, Woong-Il , HAN, Woo-Jin , LEE, Tammy , LEE, Sun-Il
IPC分类号： H04N19/13 , H04N19/122 , H04N19/159 , H04N19/176 , H04N19/463 , H04N19/96
摘要： Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
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公开(公告)号：EP4047930A1
公开(公告)日：2022-08-24
申请号：EP22167682.8
申请日：2011-04-05
发明人： CHOI, Woong-Il , HAN, Woo-Jin , LEE, Tammy , LEE, Sun-Il
IPC分类号： H04N19/13 , H04N19/122 , H04N19/159 , H04N19/176 , H04N19/463 , H04N19/96
摘要： Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
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33.发明公开
公开(公告)号：EP3944619A1
公开(公告)日：2022-01-26
申请号：EP21195689.1
申请日：2013-01-30
发明人： LEE, Tammy
IPC分类号： H04N19/176 , H04N19/463 , H04N19/124 , H04N19/61
摘要： A method of decoding a video includes obtaining syntax for determining an initial value of a quantization parameter (QP) used to perform inverse quantization on coding units included in a slice segment, from a bitstream; obtaining a slice-level initial QP for predicting the QP used to perform inverse quantization on the coding units included in the slice segment, based on the obtained syntax; and obtaining a predicted QP of a first quantization group of a parallel-decodable data unit included in the slice segment, by using the slice-level initial QP.
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公开(公告)号：EP3886434A1
公开(公告)日：2021-09-29
申请号：EP21168185.3
申请日：2011-04-05
发明人： CHOI, Woong-Il , HAN, Woo-Jin , LEE, Tammy , LEE, Sun-Il
IPC分类号： H04N19/13 , H04N19/122 , H04N19/159 , H04N19/176 , H04N19/463 , H04N19/96
摘要： Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
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公开(公告)号：EP3879520A1
公开(公告)日：2021-09-15
申请号：EP19895723.5
申请日：2019-10-10
发明人： LIM, Kyungmin , LEE, Jaesung , LEE, Tammy
摘要： An image processing apparatus includes a memory storing one or more instructions, and a processor executing the one or more instructions stored in the memory, wherein the processor uses one or more deep neural networks to generate first feature maps from a first image, generate second feature maps for each of subpixels based on the first feature maps and position information of each of the subpixels arranged in a display, and determine result values for each of the subpixels based on the second feature maps.
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36.发明公开
公开(公告)号：EP3876540A1
公开(公告)日：2021-09-08
申请号：EP21170529.8
申请日：2012-06-27
发明人： LEE, Tammy
IPC分类号： H04N19/52 , H04N19/573 , H04N19/577 , H04N19/11 , H04N19/517 , H04N19/593
摘要： A method and apparatus for encoding and decoding motion information. The encoding method includes determining whether motion information of spatial prediction units that are spatially collocated to a current prediction unit and motion information of temporal prediction units that are temporally collocated to the current prediction are available; when the number of the motion information of the spatial prediction units and the motion information of the temporal prediction units is less than a predetermined number, generating additional candidate motion information by using the available motion information of the spatial prediction units and the motion information of the temporal prediction units such that the total number of pieces of candidate motion information is the predetermined number; and decoding motion information of the current prediction unit by using the 'n' pieces of motion information.
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37.发明授权
公开(公告)号：EP3448027B1
公开(公告)日：2020-11-04
申请号：EP18199004.5
申请日：2011-08-17
发明人： LEE, Tammy , HAN, Woo-Jin
IPC分类号： H04N19/122 , H04N19/176 , H04N19/119 , H04N19/61 , H04N19/96 , H04N19/174 , H04N19/46
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公开(公告)号：EP3468202A1
公开(公告)日：2019-04-10
申请号：EP18208919.3
申请日：2011-01-14
发明人： CHEON, Min-Su , HAN, Woo-Jin , JUNG, Hae-Kyung , KIM, Il-Koo , LEE, Tammy , CHEN, Jianle
IPC分类号： H04N19/96 , H04N19/61 , H04N19/50 , H04N19/176 , H04N19/147 , H04N19/122 , H04N19/119 , H04N19/107 , G06T9/00
摘要： A method of encoding an image by transforming a group of prediction units into a frequency domain. A prediction unit may be predicted by using prediction values of the prediction units in the group of prediction units, instead of pixels generated by encoding and then restoring the other prediction units in the group of prediction units. Thus, an encoding compression ratio may be increased as a result of grouping the prediction units.
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39.发明授权
公开(公告)号：EP3282696B1
公开(公告)日：2018-12-05
申请号：EP17193659.4
申请日：2010-08-13
发明人： LEE, Tammy , HAN, Woo-Jin , CHEN, Jianle , JUNG, Hae-Kyung
IPC分类号： H04N7/24 , H04N19/96 , H04N19/70 , H04N19/61 , H04N19/176 , H04N19/122 , H04N19/119 , H04N19/107 , G06T9/00 , H04N19/625 , H04N19/169
CPC分类号： H04N19/625 , G06T9/00 , H04N19/107 , H04N19/119 , H04N19/122 , H04N19/169 , H04N19/176 , H04N19/61 , H04N19/70 , H04N19/96
摘要： An image decoding apparatus comprising: a processor which determines coding units having a hierarchical structure for decoding an image, at least one prediction unit for predicting each of the coding units, and at least one transformation unit for inversely transforming each of the coding units, by using information about a division shape of a coding unit, information about the at least one prediction unit, and information about the at least one transformation unit, parsed from a received bitstream of an encoded video; and a decoder which parses from the bitstream transformation coefficients generated by transformation according to the at least one transformation unit generated by dividing the coding unit, reconstructs encoded data of the at least one prediction unit by performing entropy decoding, inverse quantization, and inverse transformation on the parsed transformation coefficients, and performs intra prediction or inter prediction on the reconstructed encoded data and reconstructing the encoded video, wherein the coding units are split hierarchically according to a depth of the coding unit, and wherein the at least one transformation unit comprises a transformation unit having a larger size than a size of the at least one prediction unit.
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公开(公告)号：EP3404918A1
公开(公告)日：2018-11-21
申请号：EP18182526.6
申请日：2011-09-30
发明人： CHEON, Min-Su , MIN, Jung-Hye , HAN, Woo-Jin , LEE, Tammy , LEE, Sun-Il
IPC分类号： H04N19/119 , H04N19/132 , H04N19/19 , H04N19/30 , H04N19/50 , H04N19/112 , H04N19/147 , H04N19/46 , H04N19/96 , H04N19/61 , H04N19/105 , H04N19/503 , H04N19/122 , H04N19/124 , H04N19/172 , H04N19/117 , H04N19/136 , H04N19/177 , H04N19/174 , H04N19/463 , H04N19/70
CPC分类号： H04N19/30 , H04N19/119 , H04N19/176 , H04N19/463 , H04N19/61 , H04N19/70 , H04N19/96
摘要： Provided is a video encoding method for encoding symbols having a hierarchical structure, the video encoding method including: encoding a picture of a video based on data units having a hierarchical structure; determining symbols of the encoded picture based on the data units having the hierarchical structure; determining an encoding method of the symbols based on characteristics of symbols, which are determined based on the data units having the hierarchical structure; and encoding and outputting the symbols according to the determined encoding method.
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