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公开(公告)号：US12088808B2
公开(公告)日：2024-09-10
申请号：US18194817
申请日：2023-04-03
IPC分类号： H04N19/122 , H04N19/109 , H04N19/11 , H04N19/124 , H04N19/126 , H04N19/13 , H04N19/137 , H04N19/139 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/194 , H04N19/436 , H04N19/44 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/537 , H04N19/57 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/91
CPC分类号： H04N19/124 , H04N19/109 , H04N19/11 , H04N19/122 , H04N19/126 , H04N19/13 , H04N19/137 , H04N19/139 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/194 , H04N19/436 , H04N19/44 , H04N19/45 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/537 , H04N19/57 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/91
摘要： An image decoding method and apparatus according to an embodiment may extract, from a bitstream, a quantization coefficient generated through core transformation, secondary transformation, and quantization; generate an inverse-quantization coefficient by performing inverse quantization on the quantization coefficient; generate a secondary inverse-transformation coefficient by performing secondary inverse-transformation on a low frequency component of the inverse-quantization coefficient, the secondary inverse-transformation corresponding to the secondary transformation; and perform core inverse-transformation on the secondary inverse-transformation coefficient, the core inverse-transformation corresponding to the core transformation.
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公开(公告)号：US10542273B2
公开(公告)日：2020-01-21
申请号：US16027017
申请日：2018-07-03
发明人： Elena Alshina , Alexander Alshin
IPC分类号： H04N19/00 , H04N19/463 , H04N19/50 , H04N19/117 , H04N19/14 , H04N19/186 , H04N19/182 , H04N19/85 , H04N19/176 , H04N19/44 , H04N19/137 , H04N19/89 , H04N19/90 , G06T5/00 , H04N19/189 , H04N19/625
摘要： A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.
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公开(公告)号：US10356421B2
公开(公告)日：2019-07-16
申请号：US15727074
申请日：2017-10-06
发明人： Elena Alshina , Alexander Alshin , Jeong-hoon Park
IPC分类号： H04N19/14 , H04N19/103 , H04N19/186 , H04N19/13 , H04N19/82 , H04N19/91 , H04N19/463 , H04N19/86
摘要： The present disclosure relates to signaling of sample adaptive offset (SAO) parameters determined to minimize an error between an original image and a reconstructed image in video encoding and decoding operations. An SAO decoding method includes obtaining context-encoded leftward SAO merge information and context-encoded upward SAO merge information from a bitstream of a largest coding unit (MCU); obtaining SAO on/off information context-encoded with respect to each color component, from the bitstream; if the SAO on/off information indicates to perform SAO operation, obtaining absolute offset value information for each SAO category bypass-encoded with respect to each color component, from the bitstream; and obtaining one of band position information and edge class information bypass-encoded with respect to each color component, from the bitstream.
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公开(公告)号：USRE47243E1
公开(公告)日：2019-02-12
申请号：US14926883
申请日：2015-10-29
IPC分类号： H04N7/12 , H04N19/85 , H04N19/176 , H04N19/119 , H04N19/46 , H04N19/122 , H04N19/61 , H04N19/11 , H04N19/105 , H04N19/134
摘要： Disclosed are a video encoding method and apparatus and a video decoding method and apparatus. The method of encoding video includes: producing a first predicted coding unit of a current coding unit, which is to be encoded; determining whether the current coding unit comprises a portion located outside a boundary of a current picture; and producing a second predicted coding unit is produced by changing a value of pixels of the first predicted coding unit by using the pixels of the first predicted coding unit and neighboring pixels of the pixels when the current coding unit does not include a portion located outside a boundary of the current picture. Accordingly, a residual block that is the difference between the current encoding unit and the second predicted encoding unit, can be encoded, thereby improving video prediction efficiency.
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公开(公告)号：US10097860B2
公开(公告)日：2018-10-09
申请号：US15659162
申请日：2017-07-25
IPC分类号： H04N19/00 , H04N19/65 , H04N19/40 , H04N19/176 , H04N19/196 , H04N19/96 , H04N19/117 , H04N19/463 , H04N19/182 , H04N19/17 , H04N19/82 , H04N19/85 , H04N19/136 , H04N19/137 , H04N19/44 , G06K9/46
摘要： Provided are a method and apparatus of encoding a video by compensating for a pixel value and a method and apparatus of decoding a video by compensating for a pixel value. The method of encoding the video includes: encoding image data; decoding the encoded image data and generating a restored image by performing loop filtering on the decoded image data; determining a compensation value corresponding to errors between a predetermined group restored pixels in the restored image and corresponding original pixels, and a pixel group including a restored pixel to be compensated for by using the compensation value; and encoding the compensation value and transmitting the encoded compensation value and a bitstream of the encoded image data.
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公开(公告)号：US10038911B2
公开(公告)日：2018-07-31
申请号：US15221979
申请日：2016-07-28
发明人： Elena Alshina , Alexander Alshin
IPC分类号： H04N19/463 , H04N19/50 , H04N19/117 , H04N19/14 , H04N19/186 , H04N19/182 , H04N19/85 , H04N19/176 , H04N19/44 , H04N19/137 , H04N19/89 , H04N19/90 , G06T5/00 , H04N19/189 , H04N19/625
CPC分类号： H04N19/463 , G06T5/001 , H04N19/117 , H04N19/137 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/189 , H04N19/44 , H04N19/50 , H04N19/625 , H04N19/85 , H04N19/89 , H04N19/90
摘要： A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.
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公开(公告)号：US10034008B2
公开(公告)日：2018-07-24
申请号：US14773588
申请日：2014-03-06
发明人： Elena Alshina , Alexander Alshin
IPC分类号： H04N19/87 , H04N19/117 , H04N19/86 , H04N19/187 , H04N19/503 , H04N19/30 , H04N19/154 , H04N19/82
摘要： Provided are scalable video encoding and decoding methods by using a de-noise filtering. The scalable video decoding method includes generating reconstructed base layer images from a base layer image stream; determining a reference picture list including at least one of a de-noise reconstructed base layer image obtained from an enhancement layer image stream and one of the reconstructed base layer images that corresponds to a current enhancement layer image; and reconstructing the current enhancement layer image based on a reference image that is included on the reference picture list.
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公开(公告)号：US09571843B2
公开(公告)日：2017-02-14
申请号：US14368136
申请日：2012-12-21
发明人： Elena Alshina , Alexander Alshin
IPC分类号： H04N19/70 , H04N19/176 , H04N19/117 , H04N19/463 , H04N19/14 , H04N19/182 , H04N19/82 , H04N19/96 , H04N19/186 , H04N19/65 , H04N19/136
CPC分类号： H04N19/176 , H04N19/117 , H04N19/136 , H04N19/14 , H04N19/182 , H04N19/186 , H04N19/463 , H04N19/65 , H04N19/82 , H04N19/96
摘要： A video decoding method includes extracting offset mergence information of a current largest coding unit (LCU), the offset mergence information indicating whether to adopt a second offset parameter as a first offset parameter of the current LCU; reconstructing the first offset parameter of the current LCU based on the offset mergence information, the first offset parameter including an offset type, an offset value, and an offset class of the current LCU; determining whether the current LCU is an edge type or a band type, based on the offset type; determining an edge direction according to the edge type or a band range according to the band type, based on the offset class; determining a difference value between reconstructed pixels and original pixels included in the offset class, based on the offset value; and adjusting pixel values of reconstructed pixels based on the difference value.
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公开(公告)号：US09544606B2
公开(公告)日：2017-01-10
申请号：US14656377
申请日：2015-03-12
发明人： Elena Alshina , Alexander Alshin
IPC分类号： H04N19/70 , H04N19/176 , H04N19/117 , H04N19/463 , H04N19/14 , H04N19/182 , H04N19/82 , H04N19/96 , H04N19/186 , H04N19/65 , H04N19/136
CPC分类号： H04N19/176 , H04N19/117 , H04N19/136 , H04N19/14 , H04N19/182 , H04N19/186 , H04N19/463 , H04N19/65 , H04N19/82 , H04N19/96
摘要： A video decoding method includes extracting offset mergence information of a current largest coding unit (LCU), the offset mergence information indicating whether to adopt a second offset parameter as a first offset parameter of the current LCU; reconstructing the first offset parameter of the current LCU based on the offset mergence information, the first offset parameter including an offset type, an offset value, and an offset class of the current LCU; determining whether the current LCU is an edge type or a band type, based on the offset type; determining an edge direction according to the edge type or a band range according to the band type, based on the offset class; determining a difference value between reconstructed pixels and original pixels included in the offset class, based on the offset value; and adjusting pixel values of reconstructed pixels based on the difference value.
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10.发明授权公开(公告)号：US09407928B2
公开(公告)日：2016-08-02
申请号：US14644684
申请日：2015-03-11
发明人： Elena Alshina , Alexander Alshin
IPC分类号： H04N19/00 , H04N19/523 , G06T3/40 , H04N19/61 , H04N19/117 , H04N19/182 , H04N19/167 , H04N19/59 , H04N19/537 , H04N19/52 , H04N19/82
CPC分类号： H04N19/523 , G06T3/4007 , H04N19/117 , H04N19/167 , H04N19/182 , H04N19/52 , H04N19/537 , H04N19/59 , H04N19/61 , H04N19/82
摘要： A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.
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