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公开(公告)号：US11924407B2
公开(公告)日：2024-03-05
申请号：US17451139
申请日：2021-10-15
发明人： Timofey Mikhailovich Solovyev , Sergey Yurievich Ikonin , Roman Igorevich Chernyak , Alexander Alexandrovich Karabutov , Elena Alexandrovna Alshina , Huanbang Chen
IPC分类号： H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/82
CPC分类号： H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/82
摘要： The present disclosure relates to video encoding and decoding, and in particular, a method for inter prediction for a block in a frame of a video signal includes: constructing a history-based motion information candidate list, wherein the list is an ordered list comprising N history-based motion information candidates Hk containing motion information of N preceding blocks preceding the block, wherein each history-based motion information candidate comprises: one or more motion vectors (MVs), one or more reference picture indices corresponding to the MVs, and an interpolation filter index; adding one or more history-based motion information candidates from the history-based motion information candidate list into a motion information candidate list for the block; and deriving motion information for the block based on the motion information candidate list.
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公开(公告)号：US20230412807A1
公开(公告)日：2023-12-21
申请号：US18459110
申请日：2023-08-31
发明人： Alexander Alexandrovich Karabutov , Saeed Ranjbar Alvar , Ivan Bajic , Hyomin Choi , Robert A. Cohen , Sergey Yurievich Ikonin , Timofey Mikhailovich Solovyev , Elena Alexandrovna Alshina
IPC分类号： H04N19/124 , H04N19/37 , G06N3/042
CPC分类号： H04N19/124 , H04N19/37 , G06N3/042
摘要： Methods and apparatuses for compression of feature tensors of a neural network are provided. One or more encoding parameters for encoding the channels of a feature tensor are selected according to the importance of the channels. This enables unequal bit allocation according to the importance. Furthermore, the deployed neural network may be trained or fine-tuned considering the effect of encoding noise applied to the intermediate feature tensors. According to the present disclosure, the encoding and modified training methods are advantageous at least for employment in a collaborative intelligence framework.
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公开(公告)号：US11765383B2
公开(公告)日：2023-09-19
申请号：US17237924
申请日：2021-04-22
发明人： Timofey Mikhailovich Solovyev , Roman Igorevich Chernyak , Alexander Alexandrovich Karabutov , Jianle Chen , Sergey Yurievich Ikonin , Elena Alexandrovna Alshina
IPC分类号： H04N19/573 , H04N19/159 , H04N19/176 , H04N19/577
CPC分类号： H04N19/573 , H04N19/159 , H04N19/176 , H04N19/577
摘要： The present disclosure relates to video encoding and decoding, and in particular to determining motion information for a current block using a history-based motion vector predictor, HMVP, list. The HMVP list is constructed, with said list being an ordered list of N HMVP candidates Hk, k=0, . . . , N−1, which are associated with motion information of N preceding blocks of the frame and precede the current block. Each HMVP candidate has motion information including elements of one or more motion vectors, MVs, one or more reference picture indices corresponding to the MVs, and one or more bi-prediction weight indices. One or more HMVP candidates from the HMVP list are added into a motion information candidate list for the current block; and the motion information is derived based on the motion information candidate list.
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公开(公告)号：US11381843B2
公开(公告)日：2022-07-05
申请号：US17240210
申请日：2021-04-26
发明人： Roman Igorevich Chernyak , Timofey Mikhailovich Solovyev , Sergey Yurievich Ikonin , Alexander Alexandrovich Karabutov , Jianle Chen
IPC分类号： H04N19/105 , H04N19/107 , H04N19/132 , H04N19/159 , H04N19/70 , H04N19/176 , H04N19/184
摘要： The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.
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公开(公告)号：US11228780B2
公开(公告)日：2022-01-18
申请号：US17032416
申请日：2020-09-25
IPC分类号： H04N19/513 , H04N19/176 , H04N19/182 , H04N19/169 , H04N19/523 , H04N19/80
摘要： A method for inter prediction of a sample value of a current pixel of a plurality of pixels of a current block of a current frame of a video signal is proposed. The method (800) comprises: determining (801) a plurality of block-wise motion vectors related one-to-one to a plurality of blocks of the current frame; determining (803) a pixel-wise motion vector of the current pixel based on the plurality of block-wise motion vectors; determining one or more reference pixels in the reference frame based on the pixel-wise motion vector of the current pixel; and determining (805) an inter predicted sample value of the current pixel based on one or more sample values of the one or more reference pixels in the reference frame. Coding efficiency is thus improved.
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公开(公告)号：US20210337208A1
公开(公告)日：2021-10-28
申请号：US17371488
申请日：2021-07-09
发明人： Alexander Alexandrovich Karabutov , Timofey Mikhailovich Solovyev , Roman Igorevich Chernyak , Sergey Yurievich Ikonin , Jianle Chen
IPC分类号： H04N19/137 , H04N19/105 , H04N19/159 , H04N19/176
摘要： A method of determining a distance table of a merge with motion vector difference (MMVD) mode, wherein the method comprises determining a reference picture from at least one reference picture list of a current processing unit based on at least one parameter of the reference picture, and obtaining the distance table for the current processing unit based on the reference picture, wherein the at least one parameter of the reference picture comprises a picture order count (POC) number of the reference picture, a number of MMVD blocks of the reference picture, a reference picture list index of the reference picture, a reference picture index of the reference picture, and a quantization parameter (QP) of the reference picture.
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公开(公告)号：US20210218968A1
公开(公告)日：2021-07-15
申请号：US17249946
申请日：2021-03-19
发明人： Roman Igorevich Chernyak , Alexander Alexandrovich Karabutov , Sergey Yurievich Ikonin , Timofey Mikhailovich Solovyev , Haitao Yang , Jianle Chen , Yin Zhao
IPC分类号： H04N19/124 , H04N19/132 , H04N19/105 , H04N19/46 , H04N19/186 , H04N19/176
摘要： A method for inverse quantization of a current block of a picture is provided. The method is performed by a decoder, and the picture comprises a luminance component and a chrominance component, where the luminance component and the chrominance component are partitioned into multiple blocks. The method includes obtaining one or more existing quantization parameter (QP) values from a received bitstream, wherein the one or more existing QP values are associated with a current block in the chrominance component; determining a QP value for the current block in the chrominance component based on the one or more existing QP values; performing inverse quantization on the current block in the chrominance component using the determined QP value.
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公开(公告)号：US20240283966A1
公开(公告)日：2024-08-22
申请号：US18585826
申请日：2024-02-23
IPC分类号： H04N19/52 , H04N19/169
CPC分类号： H04N19/52 , H04N19/169
摘要： Motion vectors (MVs) are used as predictors for prediction of an image for a current coding unit (CU) within a current video frame. The MVs are from a list of motion vector candidates (MVCs), which is generated. The list includes MVs determined from a first or second pattern, each pattern specifying MVC positions. The first MV positions are within a current video frame, while the second MV positions are for a video frame different from the current frame. The MVC list is generated for a current CU with the MV positions being relative to a position of the current CU. In particular, the MVC list is generated in dependence on a size of the current CU and a size of a grid specifying a minimum distance between two MV positions. One or more MVs as specified by the MV positions of said pattern are included into the MVC list.
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公开(公告)号：US12047609B2
公开(公告)日：2024-07-23
申请号：US17707202
申请日：2022-03-29
发明人： Timofey Mikhailovich Solovyev , Maxim Borisovitch Sychev , Huanbang Chen , Alexander Alexandrovich Karabutov , Roman Igorevich Chernyak , Sergey Yurievich Ikonin , Haitao Yang , Elena Alexandrovna Alshina
IPC分类号： H04N19/82 , H04N19/105 , H04N19/109 , H04N19/117 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/182 , H04N19/196 , H04N19/52 , H04N19/80
CPC分类号： H04N19/80 , H04N19/105 , H04N19/109 , H04N19/117 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/182 , H04N19/197 , H04N19/52
摘要： An apparatus for inter prediction of a sample value of a current full-integer pixel of a plurality of pixels associated with a current block of a current frame of a video signal is disclosed. The apparatus is configured to: determine a motion vector of the current full-integer pixel based on a motion compensation model; determine for the current full-integer pixel a corresponding sub-integer pixel in a reference frame; determine positions of a set of corresponding filter support pixels in the reference frame; obtain a respective sample value of the corresponding sub-integer pixel of the current full-integer pixel and the corresponding filter support pixels in the reference frame by applying a bilinear interpolation; and determine the inter predicted sample value of the current full-integer pixel.
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公开(公告)号：US11997296B2
公开(公告)日：2024-05-28
申请号：US17571175
申请日：2022-01-07
发明人： Timofey Mikhailovich Solovyev , Roman Igorevich Chernyak , Alexander Alexandrovich Karabutov , Sergey Yurievich Ikonin
IPC分类号： H04N19/176 , H04N19/433 , H04N19/52 , H04N19/96
CPC分类号： H04N19/433 , H04N19/52 , H04N19/96
摘要： A method for deriving motion information for a current block includes: determining whether the current block and a top neighboring block of the current block are in a same coding tree unit (CTU) or not; obtaining a position of a spatial motion information candidate for the current block; obtaining motion information corresponding to the position of the spatial motion information candidate, depending on the result of whether the current block and top neighboring block of the current block are in the same CTU; adding the obtained motion information to a motion information candidate list for the current block; obtaining a value of a first index of a motion information candidate; and deriving motion information of the current block based on the motion information candidate list and the value of the first index.
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