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公开(公告)号：WO2021205065A1
公开(公告)日：2021-10-14
申请号：PCT/FI2021/050227
申请日：2021-03-30
发明人： CRICRI, Francesco , LE, Nam , REZAZADEGAN TAVAKOLI, Hamed , ZHANG, Honglei , HANNUKSELA, Miska, Matias , AKSU, Emre, Baris
IPC分类号： G06N3/04 , G06N3/08 , H04N19/146 , H04N19/192 , G06K9/00 , G06N20/00 , H04N21/234 , H04N7/18
摘要： Example embodiments provide a system for training a data coding pipeline comprising a feature extractor neural network (1012), an encoder neural network (1014), and a decoder neural network (1024) configured to reconstruct input data based on encoded features. A plurality of losses corresponding to different tasks (1241) may be determined for the coding pipeline. Tasks may be performed based on an output of the coding pipeline. A weight update may be determined for at least a subset of the coding pipeline based on the plurality of losses. The weight update may be configured to reduce a number of iterations for fine-tuning the coding pipeline for one of the tasks. This enables faster adaptation of the coding pipeline for one of the tasks after deployment of the coding pipeline. Apparatuses, methods, and computer programs are disclosed. Apparatuses, methods, and computer programs are disclosed.
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公开(公告)号：WO2021205067A1
公开(公告)日：2021-10-14
申请号：PCT/FI2021/050238
申请日：2021-03-31
发明人： HANNUKSELA, Miska, Matias , ZHANG, Honglei , LE, Nam , REZAZADEGAN TAVAKOLI, Hamed , CRICRI, Francesco , AKSU, Emre, Baris
IPC分类号： H04N21/2662 , H04N21/462 , H04N21/234 , H04N21/44 , G06N3/04 , G06K9/46 , G06K9/62 , H04N19/33 , H04N19/85 , H04N19/187 , G06N20/00 , G06T9/00
摘要： An apparatus includes means for decoding (710, 714) encoded data (712) to generate decoded data (718, 744), the encoded data (712) having a bitrate lower than that of original data (701), and means for extracting (715, 745) features from the decoded data; means for decoding (740) encoded residual features (736) to generate decoded residual features (742); and means for generating enhanced decoded features (750) as a result of combining (748) the decoded residual features (742) with the features (747) extracted from the decoded data (744).
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3.发明申请
公开(公告)号：WO2021170901A1
公开(公告)日：2021-09-02
申请号：PCT/FI2021/050076
申请日：2021-02-04
发明人： LAINEMA, Jani , AKSU, Emre, Baris , HANNUKSELA, Miska, Matias , ZARE, Alireza , CRICRI, Francesco
IPC分类号： H04N19/117 , H04N19/82 , H04N19/50 , H04N19/192 , G06N3/04 , G06T9/00 , G06T5/00 , G06N20/00
摘要： The embodiments relate to method for encoding and decoding, wherein the method for encoding comprises receiving an input block of a video frame for encoding; applying at least a learning-based model (702) for said input block as a processing step for encoding the block; combining (703) an output of a learning-based model with one or more data sources (712, 713) by a combination process; encoding block to a bitstream (40); using a result of the combination process as additional input for the learning-based model for encoding a subsequent block; and encoding to a bitstream combination information (720) used in the combination process, said combination information comprising at least one or more combination parameters. The embodiments also relate to technical equipment for implementing the methods.
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公开(公告)号：WO2022207962A1
公开(公告)日：2022-10-06
申请号：PCT/FI2022/050087
申请日：2022-02-14
发明人： YOU, Yu , MATE, Sujeet, Shyamsundar , AHSAN, Saba , AKSU, Emre, Baris , HANNUKSELA, Miska, Matias , CURCIO, Igor, Danilo, Diego
IPC分类号： H04N21/235 , H04N21/84 , H04N13/178 , H04N21/236 , H04N21/633 , H04N21/6587 , G06F9/54
摘要： The embodiments relate to a method and technical equipment for implementing the method. The method comprises receiving a media stream; retrieving a number of parameters (740) to be used by a plurality of processing tasks (750) of the media stream, wherein the plurality of processing tasks are carried out by a plurality of media processing entities of a network-based environment; incorporating the number of parameters to metadata; and delivering the media stream with the metadata through a processing workflow comprising the plurality of media processing entities.
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公开(公告)号：WO2021260269A1
公开(公告)日：2021-12-30
申请号：PCT/FI2021/050475
申请日：2021-06-22
发明人： REZAZADEGAN TAVAKOLI, Hamed , CRICRI, Francesco , WABNIG, Joachim , ZHANG, Honglei , SANIEE, Iraj , HANNUKSELA, Miska, Matias , AKSU, Emre, Baris
摘要： An apparatus includes means for estimating an importance of parameters of a neural network based on a graph diffusion process over at least one layer of the neural network; means for determining the parameters of the neural network that are suitable for pruning or sparsification; means for removing neurons of the neural network to prune or sparsify the neural network; and means for providing at least one syntax element for signaling the pruned or sparsified neural network over a communication channel, wherein the at least one syntax element comprises at least one neural network representation syntax element.
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公开(公告)号：WO2020183053A1
公开(公告)日：2020-09-17
申请号：PCT/FI2019/050887
申请日：2019-12-12
发明人： HANNUKSELA, Miska, Matias , AKSU, Emre, Baris , HOURUNRANTA, Ari , KAMMACHI-SREEDHAR, Kashyap , CURCIO, Igor, Danilo, Diego
IPC分类号： H04N21/854 , H04N21/845 , H04N19/167 , H04N19/70 , H04N21/2343 , H04N21/4728
摘要： A method, apparatus and computer program product encode, into a media description, a first information item indicative of a first locator for segment metadata for a set of representations. The method, apparatus and computer program product encode, into the media description, one or more representation-specific information items indicative of representation-specific locator for segment media data for one or more representations of the set of representations. The method, apparatus and computer program product cause storage of the media description with the set of representations.
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7.发明申请
公开(公告)号：WO2023021235A1
公开(公告)日：2023-02-23
申请号：PCT/FI2022/050499
申请日：2022-07-15
发明人： MATE, Sujeet, Shyamsundar , HANNUKSELA, Miska, Matias , KAMMACHI SREEDHAR, Kashyap , AKSU, Emre, Baris
IPC分类号： H04N21/2343 , H04N21/4402 , H04N19/174 , H04N21/6437 , H04L65/70 , H04N19/70
摘要： The embodiments relate to apparatuses and methods for subpicture encoding. According to an embodiment a method for a sender apparatus comprises receiving (901) image data; partitioning (902) the image data into subpictures; generating (903) a transmission packet comprising said subpictures and a packet header; inserting (904) into the transmission packet a subpicture header comprising information regarding the subpictures; and transmitting (905) the transmission packet to be delivered to a receiver apparatus.
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公开(公告)号：WO2022074295A1
公开(公告)日：2022-04-14
申请号：PCT/FI2021/050660
申请日：2021-10-07
IPC分类号： H04N19/70 , H04N19/169 , H04N19/174 , H04N19/187 , H04N19/30 , H04N19/46 , H04N19/597 , H04N21/234
摘要： An apparatus includes means for indicating an extraction reference map entry used to assign a group identifier to at least one extraction reference, the extraction reference map entry indicating a subpicture layout; wherein the at least one extraction reference causes extraction of a network abstraction layer unit data by reference from another track; wherein the at least one extraction reference comprises an index of a track reference having a subpicture type within a subpicture order sample group description entry; and means for indicating, using the at least one extraction reference, subpictures or slices of a coded picture in decoding order.
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公开(公告)号：WO2022069790A1
公开(公告)日：2022-04-07
申请号：PCT/FI2021/050541
申请日：2021-07-28
IPC分类号： H04N21/2365 , H04N21/234 , H04N19/436 , H04N19/167 , H04N19/174 , H04N19/597 , H04N7/15 , H04N7/18
摘要： The embodiments relate to a method and technical equipment, wherein the method comprises creating a control signal for controlling encoding of a bitstream (710); transmitting the control signal to more than one encoders (720); receiving a plurality of encoded media streams, which have been encoded according to the transmitted control signal (730); merging encoded input bitstreams into one output bitstream (740); and providing the output bitstream comprising the merged encoded input bitstreams for decoding (750).
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公开(公告)号：WO2023073281A1
公开(公告)日：2023-05-04
申请号：PCT/FI2022/050663
申请日：2022-10-05
发明人： ZHANG, Honglei , CRICRÌ, Francesco , HANNUKSELA, Miska, Matias , REZAZADEGAN TAVAKOLI, Hamed , LE, Nam, Hai , GHAZNAVI YOUVALARI, Ramin , AHONEN, Jukka, Ilari , AKSU, Emre, Baris
摘要： The embodiments relate to a method for encoding and decoding, and a technical equipment for implementing the methods. The method for encoding comprises receiving input media data; preprocessing the input media data by one or more pre-processing filters (1010); compressing the preprocessed input media data by a video codec (1020); and including information characterizing the one or more pre-processing filters (1010) in or along the compressed media data.
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