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公开(公告)号：US12108087B2
公开(公告)日：2024-10-01
申请号：US17436266
申请日：2020-03-26
IPC分类号： H04N19/80 , H04N19/105 , H04N19/159 , H04N19/172
CPC分类号： H04N19/80 , H04N19/105 , H04N19/159 , H04N19/172
摘要： Video processing such as encoding and/or decoding a picture can involve deriving an inter-prediction parameter based on first and second merge candidates used to generate a pairwise merge candidate, wherein the inter-prediction parameter comprises at least one of an index for weighted bi-prediction or an interpolation filter index; and encoding at least a portion of the picture information based on the inter-prediction parameter.
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公开(公告)号：US20240323366A1
公开(公告)日：2024-09-26
申请号：US18278335
申请日：2022-02-22
发明人： Philippe Bordes , Ya Chen , Thierry Dumas , Franck Galpin , Karam Naser , Antoine Robert
IPC分类号： H04N19/117 , H04N19/132 , H04N19/172 , H04N19/80
CPC分类号： H04N19/117 , H04N19/132 , H04N19/172 , H04N19/80
摘要： A method for reconstructing at least one part of a first picture, from at least one part of a second picture is provided, said first picture and said second picture having different sizes. The reconstructing comprising decoding said second picture from a bitstream and determining at least one first sample of said at least one part of the first picture using at least one resampling filter applied to at least one second sample of said at least one part of the decoded second picture. A corresponding apparatus for reconstructing at least one part of a first picture is provided. A method for encoding/decoding a video, and corresponding apparatuses, are provided which comprise the reconstructing at least one part of a first picture, from at least one part of a second picture, said first picture and said second picture having different sizes.
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公开(公告)号：US20240311621A1
公开(公告)日：2024-09-19
申请号：US18272714
申请日：2022-02-03
发明人： Suresh Kirthi KUMARASWAMY , Quang Khanh Ngoc DUONG , Alexey OZEROV , Patrick FONTAINE , Francois SCHNITZLER , Anne LAMBERT , Ghyslain PELLETIER
IPC分类号： G06N3/0464 , G06N3/096
CPC分类号： G06N3/0464 , G06N3/096
摘要： The proposed approach deals with efficient transmission for distributed AI with a provision to switch among multiple bandwidths. During the distributed inference at edge devices, each device needs to load part of the AI model only once, but the input/output features communicated between them can be flexibly configured depending on the available transmission bandwidth by enabling/disabling connection between nodes in the Dynamic feature size Switch (DySw). When some nodes are connected or disconnected in order to achieve the desired compression factor, other parameters of the DNN remain the same. That is, the same DNN model is used for different compression factors, and no new DNN model needs to be downloaded to adapt to the compression factor or the network bandwidth.
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公开(公告)号：US12081734B2
公开(公告)日：2024-09-03
申请号：US17620502
申请日：2020-06-23
发明人： Thierry Dumas , Franck Galpin , Gagan Rath , Fabrice Leleannec
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
CPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
摘要： The disclosure relates to a method for encoding image data, the method including intra-predicting, or predicting by combining inter-prediction and intra-prediction, a first block of the image data by using an intra-prediction mode using a first single transformation obtained by taking account of the first block size. The disclosure also relates to a method for encoding image data, a variable coding length being used for signaling a plurality of Prediction Modes by the encoding, the method comprising:—intra-predicting a first block of the image data by using an intra-prediction mode using a first transformation, the first transformation being obtained by taking account of the first block size, —encoding information signaling a use of the intra-prediction mode in a bitstream, the information being encoded as one of the plurality of Prediction Modes. The disclosure further relates to the corresponding decoding methods, devices and media.
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公开(公告)号：US20240291987A1
公开(公告)日：2024-08-29
申请号：US18659336
申请日：2024-05-09
IPC分类号： H04N19/12 , H04N19/176 , H04N19/182
CPC分类号： H04N19/12 , H04N19/176 , H04N19/182
摘要： A lossless coding mode is proposed in a video coding system comprising a plurality of coding tools, some being lossy by design, some of which can be adapted to become lossless or near lossless. To enable a lossless mode in such system, it is proposed to disable the tools that are lossy by design and use only lossless tools, to adapt some tools to enable lossless coding, and adapt some tools to enable near-lossless coding so that a secondary lossless coding may be applied after residual coding. In some embodiments, a type of residual coding is determined by, when an information indicates that a transform skip residual coding is used, obtaining a flag representative of a special mode, and when this flag is true, determine that regular residual coding must be used instead of the transform skip residual coding that should be used.
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6.发明授权公开(公告)号：US12069577B2
公开(公告)日：2024-08-20
申请号：US18197176
申请日：2023-05-15
IPC分类号： H04W52/02
CPC分类号： H04W52/0251 , H04W52/0254 , Y02D30/70
摘要： The present invention generally relates to a management of a wireless interface of a device; the management comprises: monitoring of at least one component of the device, other than a wireless network element; switch a power state of the wireless interface to another power state according to the monitored activity.
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公开(公告)号：US12069301B2
公开(公告)日：2024-08-20
申请号：US17441051
申请日：2020-03-19
发明人： Julien Fleureau , Bertrand Chupeau , Gerard Briand , Renaud Dore , Franck Thudor
IPC分类号： G06T15/08 , G06T17/00 , H04N19/147 , H04N19/177 , H04N19/46 , H04N19/593 , H04N19/597 , G06T19/00
CPC分类号： H04N19/597 , G06T17/00 , H04N19/147 , H04N19/177 , H04N19/46 , H04N19/593 , G06T15/08 , G06T19/00 , G06T2200/04 , G06T2207/10028
摘要： A patch-based atlas format in intra-periods of varying length is used to encode a volumetric video. A first atlas layout is built for a first sequence of 3D scenes. The number of 3D scenes in the sequence is chosen to fit the size of a Group of Pictures of the codec. A second sequence is iteratively set up by appending the next 3D scene of the sequence to encode while the number of patches of the layout built for this iterative second sequence is lower than or equal to the number of patches of the first layout. When iterations end, one of the layouts is selected to generate every atlas of the group. In such a way, size of metadata is decreased, and compression is enhanced.
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8.发明公开公开(公告)号：US20240244215A1
公开(公告)日：2024-07-18
申请号：US18617160
申请日：2024-03-26
发明人： Gagan Rath , Fabien Racape , Fabrice Urban
IPC分类号： H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176
CPC分类号： H04N19/132 , H04N19/105 , H04N19/159 , H04N19/176
摘要： Described are video coding systems comprising a post-processing stage using position dependent intra prediction combination where a predicted sample is modified based on a weighting between a value of a left or top reference sample and the obtained predicted value for the sample, wherein the left or top reference sample is determined based on the intra prediction angle. This provides better computing efficiency while keeping identical compression performance. Encoding method, decoding method, encoding apparatus and decoding apparatus based on this post-processing stage are proposed.
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公开(公告)号：US20240214569A1
公开(公告)日：2024-06-27
申请号：US18555673
申请日：2022-04-07
发明人： Fabrice LE LEANNEC , Karam NASER , Thierry DUMAS , Antoine ROBERT
IPC分类号： H04N19/119 , H04N19/176
CPC分类号： H04N19/119 , H04N19/176
摘要： Some series of ABT split are normatively forbidden in order to limit the number of allowed series of splits, in a way that refines the trade-offs between the amount of allowed split series and the compression efficiency. In particular, a reduced combinatory in terms of allowed split series leads to reduced encoder-side complexity, in the rate distortion search for the best block partitioning. The normative split restrictions provide that when successively using horizontal or vertical then vertical or horizontal asymmetric splits, the considered succession of two splits leads to isolating the sub-area of the input block that is three-fourths the size of the parent block in width and height. Additional embodiments condition allowed splits on transform size, block size, and temporal layer of the slice and slice type.
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公开(公告)号：US20240196007A1
公开(公告)日：2024-06-13
申请号：US18286665
申请日：2022-04-12
发明人： Antoine Robert , Franck Galpin , Tangi Poirier , Ya Chen
IPC分类号： H04N19/583 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/52
CPC分类号： H04N19/583 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/52
摘要： Systems, methods, and instrumentalities are disclosed for performing overlapped block motion compensation (OBMC). OBMC may be performed by considering sub-blocks within a coding block as an entire block if a motion field is uniform. OBMC may be performed on a coding block partitioned into multiple sub-blocks, using a block-based OBMC approach. The sub-blocks may be determined to have the same motion field, if the affine model associated with the block is translational. OBMC may be performed by subtracting OBMC from an original picture in the merge modes, using a block-based approach. A block coded in OBMC mode may be used in motion compensation, for example a fast merge pass of merge mode(s). The top band and the left band of the block may be subtracted from the input signal associated with the current block, and motion compensation may be performed on the block having the top and left bands subtracted.
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