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公开(公告)号：US11509899B2
公开(公告)日：2022-11-22
申请号：US17314475
申请日：2021-05-07
发明人： Vadim Seregin , Jianle Chen , Sun-il Lee , Tammy Lee
IPC分类号： H04N19/13 , H04N19/46 , H04N19/593 , H04N19/463 , H04N19/186 , H04N19/119 , H04N19/11 , H04N19/154
摘要： Methods and apparatuses for encoding and decoding an intra prediction mode of a prediction unit of a chrominance component based on an intra prediction mode of a prediction unit of a luminance component are provided. When an intra prediction mode of a prediction unit of a luminance component is the same as an intra prediction mode in an intra prediction mode candidate group of a prediction unit of a chrominance component, reconstructing the intra prediction mode candidate group of the prediction unit of the chrominance component by excluding or replacing an intra prediction mode of the prediction unit of the chrominance component which is same as an intra prediction mode of the prediction unit of the luminance component from the intra prediction mode candidate group, and encoding the intra prediction mode of the prediction unit of the chrominance component by using the reconstructed intra prediction mode candidate group.
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公开(公告)号：US11115452B2
公开(公告)日：2021-09-07
申请号：US16729966
申请日：2019-12-30
发明人： Tammy Lee , Seung-hoon Han
摘要： Disclosed are a coded video data processing method and apparatus which consider a random access, and a coded video data generating method and apparatus which consider a random access. The coded video data processing method includes obtaining a bitstream of coded video data, obtaining metadata information used for video-processing of pictures having a decoding order after a random access point picture in the bitstream, and performing video-processing on decoded video data among the pictures having the decoding order after the random access point picture, based on the metadata information.
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3.发明授权公开(公告)号：US11006108B2
公开(公告)日：2021-05-11
申请号：US16130253
申请日：2018-09-13
发明人： Ki-heum Cho , Yong-sup Park , Jae-yeon Park , Chang-han Kim , Il-jun Ahn , Hee-seok Oh , Tammy Lee , Min-su Cheon
IPC分类号： H04N19/117 , H04N19/134 , G06T3/40 , H04N19/80 , H04N19/86 , H04N19/176 , H04N19/115 , H04N19/172 , H04N19/154
摘要： An image processing apparatus is provided. The image processing apparatus includes a processor configured to, in response to an image including a plurality of frames being input, change a predetermined parameter to a parameter corresponding to a compression rate of each of the plurality of frames for each frame, and process the input image by using the parameter changed for each frame, and an output interface configured to output the processed image.
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公开(公告)号：US10154287B2
公开(公告)日：2018-12-11
申请号：US15499336
申请日：2017-04-27
发明人： Tammy Lee , Woo-jin Han
IPC分类号： H04N19/61 , H04N19/176 , H04N19/119 , H04N19/46 , H04N19/122 , H04N19/96 , H04N19/44 , H04N19/60 , H04N19/136 , H04N19/169 , H04N19/172 , H04N19/174
摘要： A video encoding method is provided. The method includes: encoding a current region of a video by performing a transformation on the current region by using transformation units in a variable tree-structure which are determined from among transformation units that are hierarchically split from a base transformation unit with respect to the current region and which are generated based on a maximum split level of a transformation unit. The method further includes outputting encoded data of the current region, information about an encoding mode, and transformation-unit hierarchical-structure information including maximum size information and minimum size information of the transformation unit with respect to the video.
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公开(公告)号：US10027991B2
公开(公告)日：2018-07-17
申请号：US15625640
申请日：2017-06-16
发明人： Woong-Il Choi , Woo-jin Han , Tammy Lee , Sun-il Lee
IPC分类号： H04N19/91 , H04N19/176 , H04N19/124 , H04N19/44 , H04N19/61 , H04N19/70 , H04N19/30
CPC分类号： H04N19/91 , H04N19/124 , H04N19/172 , H04N19/176 , H04N19/30 , H04N19/44 , H04N19/61 , H04N19/70
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：US09877049B2
公开(公告)日：2018-01-23
申请号：US14814697
申请日：2015-07-31
发明人： Tammy Lee , Byeong-doo Choi
IPC分类号： H04N19/91 , H04N19/14 , H04N19/174 , H04N19/172 , H04N19/68 , H04N19/70 , H04N19/50
CPC分类号： H04N19/91 , A47J39/02 , H04N19/14 , H04N19/172 , H04N19/174 , H04N19/50 , H04N19/68 , H04N19/70
摘要： Provided are entropy encoding and entropy decoding for video encoding and decoding. The video entropy decoding method includes: determining a bin string and a bin index for a maximum coding unit that is obtained from a bitstream; determining a value of a syntax element by comparing the determined bin string with bin strings that is assignable to the syntax element in the bin index; storing context variables for the maximum coding unit when the syntax element is a last syntax element in the maximum coding unit, a dependent slice segment is includable in a picture in which the maximum coding unit is included, and the maximum coding unit is a last maximum coding unit in a slice segment; and restoring symbols of the maximum coding unit by using the determined value of the syntax element.
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公开(公告)号：US09800872B2
公开(公告)日：2017-10-24
申请号：US14299897
申请日：2014-06-09
发明人： Tammy Lee , Woo-jin Han , Il-koo Kim , Sun-il Lee
IPC分类号： H04N19/105 , H04N19/137 , H04N19/56 , H04N19/52 , H04N19/159 , H04N19/176 , H04N19/70 , H04N19/196 , H04N19/96 , H04N19/103 , H04N19/463 , H04N19/14 , H04N19/174 , H04N19/139 , H04N19/30 , H04N19/33
CPC分类号： H04N19/137 , H04N19/103 , H04N19/105 , H04N19/139 , H04N19/14 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/196 , H04N19/30 , H04N19/33 , H04N19/463 , H04N19/52 , H04N19/56 , H04N19/70 , H04N19/96
摘要： Provided are a method and apparatus for encoding a video by using block merging and a method and apparatus for decoding a video by using block merging. The method of encoding includes: determining an encoding mode indicating a current data unit for encoding of a picture and an encoding method including prediction encoding performed for the current data unit; determining an occurrence of merging with at least one neighboring data unit based on at least one of the encoding mode and a prediction mode; and determining prediction mode information, merging related information, and prediction related information, and determining encoding information of the data unit including the prediction mode information, the merging related information, and the prediction related information.
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公开(公告)号：US09788006B2
公开(公告)日：2017-10-10
申请号：US14724050
申请日：2015-05-28
发明人： Tammy Lee , Jianle Chen
IPC分类号： H04N19/51 , H04N19/91 , H04N19/13 , H04N19/61 , H04N19/52 , H04N19/593 , H04N19/82 , H04N19/96
CPC分类号： H04N19/52 , H04N19/13 , H04N19/51 , H04N19/593 , H04N19/61 , H04N19/82 , H04N19/91 , H04N19/96
摘要： Provided are a method and apparatus for intra predicting an image, which generate a prediction value via linear interpolation in horizontal and vertical directions of a current prediction unit. The method includes: generating first and second virtual pixels by using at least one adjacent pixel located upper right and lower left to a current prediction unit; obtaining a first prediction value of a current pixel via linear interpolation using an adjacent left pixel located on the same line as the first virtual pixel and the current pixel; obtaining a second prediction value of the current pixel via linear interpolation using an adjacent upper pixel located on the same column as the second virtual pixel and the current pixel; and obtaining a prediction value of the current pixel by using the first and second prediction values.
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公开(公告)号：US09743102B2
公开(公告)日：2017-08-22
申请号：US15293375
申请日：2016-10-14
发明人： Tammy Lee , Woo-jin Han
IPC分类号： H04N19/513 , H04N19/56 , H04N19/70 , H04N19/51 , H04N19/96 , H04N19/176 , H04N19/577 , H04N19/124 , H04N19/159 , H04N19/61 , H04N19/172 , H04N19/182
CPC分类号： H04N19/513 , H04N19/124 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/51 , H04N19/56 , H04N19/577 , H04N19/61 , H04N19/70 , H04N19/96
摘要： An encoding method and apparatus and a decoding method and apparatus for determining a motion vector of a current block based on a motion vector of at least one previously-encoded or previously-decoded block are provided. The decoding method includes: decoding information regarding a prediction direction from among a first direction, a second direction, and bi-directions, and information regarding pixel values of the current block; determining the prediction direction in which the current block is to be predicted, based on the decoded information regarding the prediction direction, and determining a motion vector for predicting the current block in the determined prediction direction; and restoring the current block, based on the determined motion vector and the decoded information regarding the pixel values, wherein the first direction is a direction from a current picture to a previous picture, and the second direction is a direction from the current picture to a subsequent picture.
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10.发明授权公开(公告)号：US09681127B2
公开(公告)日：2017-06-13
申请号：US14514892
申请日：2014-10-15
发明人： Seung-soo Jeong , Tammy Lee , Jae-hyun Kim , Chan-yul Kim , Jeong-hoon Park
IPC分类号： H04N19/42 , H04N19/436 , H04N19/70 , H04N19/44 , H04N19/174
CPC分类号： H04N19/436 , H04N19/174 , H04N19/44 , H04N19/70
摘要： Provided are video encoding and decoding methods and apparatuses for parallel processing. The video decoding method includes obtaining a parallel processing syntax indicating a parallel processing type that is applied to a second data unit of a lower level from a first data unit header of an upper level, obtaining a parallel processing flag indicating whether the parallel processing type is applied to the second data unit from a second data unit header, and determining whether the parallel processing type is applied to the second data unit based on the obtained parallel processing flag.
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